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MIL-STD-1168A28 February 1975SUPERSEDINGMIL-STD-116830 June 1965

MILITARY STAN DARD

AiWIUNITION LOT NUMBERING

FSC 1395

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MIL-STI)-1168A2f? February 1975

DEPARTMENT OF DEFENSE

WASHINGTON , D . C . 20301

Ammunition Lot NumberingMIL-STD-1168A

1. This Military Standard is approved for use by all Departments -and Agencies of the Department of Defense.

2. Recommended corrections, additions or deletions should beaddressed to.Conunander, Picatinny Arsenal, ATTN: SARPA-QA-A-P,Dover, New Jersey 07801.

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MIL-STD-1168A28 February 1975

FOREWORD

The purpose of lot numbering ammunition items as outlinedherein is to provide the identification of homogeneousmateriel necessary to assure accurate control of items duringdevelopment and experimental stages; during the movementof items from production line to production line, fromplant to plant, from plant to storage facilities; while attest facilities.or in the field; for issue to the usingservices; to enable the proper establishment and maintenanceof surveillance records; and to provide a means for properlyidentifying materiel when withdrawal of defective, deteriorated,hazardous or obsolete ammunition and explosive materiel fromservice is required.

The title of this standard has been changed simply from “LotNumbering of Ammunition” to “Ammunition Lot Numbering” inorder to effect greater compatibility in the alphabeticallisting of the “DOD Index of Specifications and Standards”with other documents categorized in the ammunition fieldsuch as “Ammunition Color Coding,” MIL-STD-709, “AmmunitionData Card,” MIL-STD-1167 and “Ammunition Manufacturers andTheir Symbols”, MIL-STD-1461.

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MIL-STD-1168A28 February 1975

CONTENTS

Paragraph

1. SCOPE1.1 Application1.2 Inclusions1.3 Exceptions

2. REFERENCED DOCUMENTS

3. TERMS , DEFINITIONS , AND ABBREVIATIONS

4.L.1

4.1.14.1.24.1.34.1.44.1.54:1.64.24.3

5.5.1

5.1.15.1.25.1.35.25.2.15.2.25.2.35.3

5.3.1

5.3.25.3.35.3.45.3.5

GENERAL REQUIREMENTSDescription, use, and responsibility

for lot numbersManufacturer’s identification symbolYear of productionMonth of productionLot interfix numberLot sequence numberAmmunition lot suffix (the alpha suffix)Duplication of lot numbersMandatory numbering of ammunition lots

SPECIAL AND DETAILED REQUIREMENTS .

Description and use of ammunition lotnumbers under special conditions

Non-Standard and renovated lotsPartial lot

Ammunition lot suffix (the alpha suffix)Propellant lot numbersReprocessed propellant lotsReblended propellant lotsReblended and reprocessed propellant lotsMarking of lot numbers on explosive com-

ponents, inert components, completerounds, and guided missiles

Marking drawings (for contractor’=s prepareddrawing)

Explosive loaded componentsInert componentsComplete assembled roundsGuided missiles

Page

111“1

2

3

10

101113131421242425

26

2626333336373738

38

3838393939

5.4 Exceptions to use of certain letters as ammu-nition lot suffixes 40

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MIL-STD-1168A28 February 1975

. ●

CONTENTS (cont.)

Paragraph

Required use of complete lot number.;:2 Elimination of the “500 series” interfixes5.7 Elimination of the use of “PG”, “SP”, “SR”,

ll~Tll, etc, in lot numbers7.8 Elimination of the use of “B”, ‘tRtt,and “RB!’

in propellant lot numbers5.9 Documenting information pertinent to lots

produced under special conditions

6. NOTES6.~ Items6.2 Historical information6.3 “Ammunition Manufacturers and Their S?rmbols”.

MIL-STD-1461 ‘6.4 Method for obtaining required technical data6.5 Procedure for requesting lot suffixes6.6 Methods for acquiring ammunition data cards6.6.1 For the Navy--6.6.2 For the Air Force--6.6.3 Fqr. the Army--6.6.4 A~l requests for copies of ammunition data

cards

Page

4040

40

40

40

414141

41414141424242

42

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MIL-STD-1168A28 February 1975

1. SCOPE

1.1 Applications . This standard establishesthe lot numbering system that shall be used toitems of ammunition-and explosive materiel, toframe items such as fins, during all phases ofcycles .

and describesidentifyinclude airtheir life

1.2 Inclusions. The principles and provisions of thescope of this standard have been expanded to includeeither in part or in total, as appropriate, supply classesII, V and IX. They shall apply to various chemical items,gas masks and related small arms, pyrotechnics, mines,grenades, etc. The term “ammunition” has been retainedand is used in its “broadest sense” as defined in MIL-STD-bk4, AR-31O-25 and in paragraph 3.2 herein.

1.3 Exceptions . The provisions of this standard donot cover the lot numbeting system being used on nuclearmateriel, assemblies and associated parts designed speci-fically for nuclear applications.

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MIL-STD-1168A28 February 1975

2. REFERFSTCED DOCUMENTS

Issues of the following documents in effect on the date ofinvitation for bids form a part of this standard to theextent specified herein.

STANDARDSMilitary

MIL-STD-109 - Quality Assurance Terms andDefinitions

MIL-STD-444 - Nomenclatures and Definitionsin the Ammunition Area

MIL-STD-1167 - Ammunition Data Card

MIL-STD-1461 - Ammunition Manufacturers and TheirSymbols

REGULATIONSArmy

AR-31O-25 - Dictionary of United States Army Terms(Short Title: AD)

MAN UAL STechnical

TM-9-1300-250 - Ammunition Maintenance

BULLETINSsupply

SB-T42-1 - Ammunition Surveillance Procedures

HANDBOOKSOffice Of the Asst Secretary of Defense (I&L)

H57 - Procurement Quality Assurance

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. .

. TERMS, DEFINITIONS(For pur~oses of this standard

MIL-STD-1168A28 February 1975

AND ABBREVIATIONSand all applications thereto)

3.1

3.2al 1

ACO. Administrative Contracting Officer.—

Ammunition (ammo). A generic term which includesmanner of missiles to be thrown aEainst an enemy.. .

such as, bullets, projectiles, rockets, cartridges, grenades,torpedoes, bombs and guided missiles with their necessarypropellants, primers, fuzes, detonators and charges ofconventional explosive, nuclear explosive, chemical or othermateriels . In the “broadest sense” the term is not limitedto those materiels to be thrown, nor .to use against an enemy,but also will include all explosives, explosive devices,-pyrotechnics and pyrotechnic devices. The purpose is notlimited and includes in addition to direct use against anenemy, such uses as illumination, signaling, saluting, mining,digging, cutting, accelerating, decelerating, separating,catapulting personnel or materiel, operating or stoppingmechanisms, demolition, decoying, practice, training, guarding,game hunting and just pure sport. All component parts thereofshall also be considered as ammunition.

3.3 Ammunition lot. A quantity of ammunition (completerounds, components, propellants, etc.) which is manufacturedor assembled by one producer under uniform conditions andwhich is expected to function in a uniform manner. An ammunitionlot is designated and identified by assignment of an ammunitionlot number. All materiel comprising an ammunition lot mustbe homogeneous.

3.4 Ammunition lot number. A code number systematicallyassigned to each ammunition lot at the time of manufacture,assembly or modification that uniquely identifies the particularammunition lot.

3.5 Ammunition lot suffix. An alpha character added tothe sequence portion of the ammunition lot number to denotea rework effectinu a materiel change in the original lot.to identify repro~essed propellant-lot suffixes are always in capitalsequentially starting with “A” and,Izn. Use of some alpha charactersThese are listed in paragraph 5.4.

lots, etc. Ammunitionletters and are appliedcontinuing throughare restricted or prohibited.

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MIL-STD-1168A28 February 1975.

3.6 Calibration Lot. A calibration lot serves as the currentstandard against which one or more reference lots or othercalibration lots may be selected, except in the ca>e of smallarms where no calibration lot is used.

3.7 Complete rounds. An assemblage of explosive and nonexplo-sive components designed to perform a specific function atthe time and under the conditions desired. Also usedinterchangeably with “complete assembled rounds” and “roundof ammunition”. It should not be used interchangeablywith “item of issue”. All “items of issue” are not necessarily‘Icomplete rounds.”. Some examples of “complete rounds ofammunition” are:

a. bomb - consisting of all component parts requiredto function the bomb once.

b. fixed or semi-fixed - consisting of a primer,propelling charge, cartridge case, a projectile and afuze except when solid projectiles are used.

c. missile - consisting of complete warhead sectionand a missile body with its associated components andpropellants .

d. separate loading - consisting of a primer, propellingcharge and except for-blank ammunition, a projectile anda fuze.

3.8 Functional lot (functional pack of small arms ammunition).A quantity of two or more types of cartridges packed inan authorized combination as an item of issue for fielduse in a weapon system.

3.9 GOCO plant. Government owned contractor operated plant.

3.10 GOGO plant. Government owned Government operated plant.

3.11 Homogeneity /homogeneous materiel. When all units ofproduct in’an ammunition lot have been produced by onemanufacturer, in one unchanged process, under stable conditionsof production, in accordance with ‘the same drawings, thesame specifications and any revisions thereto, a “stateof homogeneity* shall be considered to exist. This meansthat the items of ammunition have been manufactured orassembled during a production process which has not beenalt”ered by innovation, changes in materiel sources, strikes,retooling (other than that done due to routine changes

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● MIL-STD-1168A28 February 1975

to compensate for normal tool wear or breakage) or inter-ruptions other than those due to the end of the shift,day or week. All homogeneous materiel must comply with theprovisions for submission of product as specified in MIL-STD-105.

3.12 Hybrid lot. A hybrid lot of ammunition is an item ofissue lot consisting of components of various interfix numbersand manufacturers, in excess of the number permitted inthe item of issue detailed specification. Hybrid lots willbe numbered in accordance with the provisions containedin this standard. (Hybrid lots differ from regrouped lotsin that the former deals with component lots while the latterdeals with complete round lots).

3.13 Interfix number. A 3-digit number ranging from “001”to “999” placed between the month of production code letterand the sequence number. The interfix number is an integralpart of the ammunition lot number and is designed to identifythose lots in an interfix series which have been producedor assembled by the same” manufacturer at the same locationfor the same item, made according to a specific design andmanufacturing process using like materiels in accordancewith certain administrative procedures.

3.14 Interfix series. An interfix series is comprised ofone (1) Or more ammunition lots manufactured or assembledby the same producer under uniform conditions and.whichare expected to function in a uniform manner. The manufac-turerfa identification symbol and the interfix number remainas constants. The sequency number shall advance sequentiallybut shall not exceed “999”. In most instances the monthof production code will change progressively within an interfixseries . Occasionally the year of production will also change.

Example: AMC73BO06-001AMC73BO06-002AMCT3CO06-003AMC73DO06-004 etc.

to AMC74AO06-015

In this example, the interfix ser-ies is AMCT3BO06-001through AMC74AO06-015. The interfix number is “006”.

3.15 Item of Issue.’ A complete ”round or primary/major com-ponent which is issued to a field activity.

3.16 Items of a similar nature. Those items produced orassembled by the same manufacturer at the .same’plant whichare basically the same but have been modified slightly, thereby

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MIL-STD-1168A28 February 1975

permitting some variation in end product functioning. (Includedare blanks, tracers, rounds produced for training purposes,etc.). Also included are those items of the same caliberor size which are manufactured or assembled at the same plant.

3.17

3.18

3.19

3.20

3.21thathave

LAP Load assemble pack.—.

Loading line. (See production line - 3.33).

Lot number. (See ammunition lot number - 3.4).

Lot suffix. (See ammunition lot suffix - 3.5).

Lotting concepts . This incorporates the basic philosophythe units of product comprising a lot of ammunitionbeen produced or assembled at the same plant under

homogeneous conditions and subsequently numbered systematicallyto assure accurate identification and control of the lot andits major components during their entire life cycle. Moreover,it accepts the theory that all portions of the lot are reasonablyidentifiable or capable of being identified with the parentlot as long as the original lot.number is retained in itsbasic form.

3.22 Maintenance operations. For purposes of this standard,maintenance operations shall be used to cover. the broadspectrum of all operations involving the care and preservationof ammunition. For the, most part, it will pertain to, butis not limited to, depot, field, arsenal and plant applicationswhich encompass operations consisting of adjusting, cleaning,derusting, repainting, remarking, repackaging, reconditioning,reworking, renovating, modifying, overhauling, conversion,reprocessing, replacing, repairing, regrouping, ordinarymaintenance, extensive maintenance, etc. In most instances,maintenance operations will require the issuance of reworkprocedures, renovation instructions, maintenance directives,etc.

3.23 Manufacturer’s identification symbol. A combinationof one, two or three alpha characters assigned in a mannerto indicate the unique identity and location of the arsenal,plant, depot, station, contractor, vendor; etc., which manufac-tured, assembled, renovated, modified, or loaded a specific itemof ammunition or ammunition component. The manufacturersidentification symbol is an integral part of the ammunitionlot number. It is the first entry of the lot number precedingthe numeric code used to identify the year of production.The alpha characters shall always be all capital letters.

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MIL-STD-1168A28 February 1975

3.2k Modification. This operation is accomplished subsequentto the initial production and lotting, and consists of replacing,interchanging or alteration of faulty or deteriorated componentparts with a component of a different model number or nomen-clature, etc., thereby effecting a change in design, functionor manufacturing procedure resulting in a loss of identificationwith the parent lot. The modification may be a direct resultof engineering changes and specification revisions intendedto change design or functional characteristics. In allcases, a new lot number will be issued. The manufacturersidentification symbol for the new lot number shall be thatof the facility performing the modification. The lot interfixnumber assigned will be in accordance with 5.1.1.10. Thischange is necessary to insure that the materiel changesare clearly understood. Modification may or may not beperformed when regrouping of lots is being accomplished.These operations are frequently referred to as conversion,extensive maintenance and extensive renovation.

3.25 Month of production. An alpha code to identify themonth that manufacture, assembly or modification of thelot was initiated. This alpha code is placed directly betweenthe year of production and the lot interfix number. Itbecomes an integral part of the ammunition lot number. Alisting of the alpha codes assigned to identify the monthof production are contained in 4.1.3.

3.26 w. Metal parts.

3.27 Overhaul. The process of performing exterior maintenance,as required, on ammunition lots consisting of complete roundsand/or primary components which have been quality evaluatedand found serviceable. This includes such operations ascleaning, removal of rust, corrosion or other foreign materialfrom an item, repainting, remarking, etc.

3.28 Parent lot. The “original” or “basic” lot priOr tOany changes, modifications, renovations, etc., which resultin either the addition of a lot suffix, a change in thelot interfix number or the assignment of a completely newlot number.

3.29 Partial lot. Partial lots are “sub-divisions” of normal ‘ammunition lots. Usually they are of predetermined equalquantities or represent specific production time frames.A partial lot is not intdnded to be identified as an independentlot and must never be so considered. Identification andcontrol of partial lots is a function of the ammunitiondata card (DD Form 165o) and MIL-STD-116’7.

3.30 ~. Procuring Contracting Officer.

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MIL-STD-1168A28 February 1975

3.31 Procuring service/activity. (Actual Buyer.) A DODAgency such as the Dept. of Air Force, Navy, Army, etc.which is assigned the responsibility for the acquisitionof facilities, the obtaining of pers?nnel, the awarding,issuance and execution of the procurement contracts, instrumentsand packages, as pertinent, used for the purchase of services,supplies or equipment, and performing post award functionsnot assigned to a Contract Administration Office (CAO).

3.32 PQA and LO. Product Quality Analysis and LiaisonOperations .

3.33 ~. Product Quality Specialist. Also Key Inspector.

3.34 production line. (Loading line. ) A production linewill be considered as a collection of benches, tools, etc. ,the products of which can be grouped into one productionlot or a “series of production lots.” A facility may haveseveral lines, in a physical sense, but if their productcan be grouped together into one lot or a “series of lots,!!the facility will be considered as having only one productionline. However, if a facility produces two (2) or more lotsconcurrently and the distinction between the lots is oneof the place or type of tools on which the lots were produced,then the facility is considered to have more than one productionline..

3.35 ~. Quality Assurance Representative.

3.36 Reference lot. A component lot or end item lot selectedfor use in ballistic tests where acceptance is based upona comparison between the reference round performance andthe test round performance. Reference lots are selectedon the basis of their performance with that of the currentcalibration lot.

3.37 ReRrouu /regroupin&. When tvo (2) or more complete rouniilots are combined to form one (1) lot, regardless of thetype of maintenance operations which may or may not be performedin conjunction with the assemblage of these lots, this procedureshall be considered as “regrouping”. (“Regrouped lots” varyfrom “hybrid lots” in terms of dealing with complete roundlots as opposed to component lots.)

3.38 Renovation. A general term which denotes the performanceof any process, other than complete breakdown and reassembly,required to render an existing item fully serviceable.Renovation includes rework, overhaul and modification.

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‘o MIL-STD-1168A28 February 1975

3.39 Rework. The process of replacing one or more faultyor deteriorated components in an end item of issue with likecomponents of the same nomenclature and model number. This

includes repackaging and X-raying. In some instances, economicsor other factors may permit a maintenance operation to bedesignated as a rework when components of different nomenclaturesor model numbers are used to replace the original componentsor the end item purpose and function may have been altered.Reprocessing of propellant lots will be considered as arework operation. All lots or quantities thereof whichare reworked will be identified by the assignment of anammunition lot number with appropriate alpha suffix in accordancewith the provision of this standard. This addition is necessaryto insure that the changes are clearly and readily recognized.

3.40 Sequence number. A number ranging from “001” to “999”placed after the interfix number. The sequence number isan integral part of the ammunition lot number and identifiesthe lot within the interfix series according to the sequenceof production or assembly of the item.

,,0 3.41 Serial number. Number assigned to each lot producedin a consecutive manner in the order of manufacture or assemblyor assigned in blocks to be applied in a consecutive mannerin the order of manufacture or assembly for the applicableitem(s) or lot(s). Serial numbers shall be assigned tothose ammunition items requiring serialization control foreach end item, component item or lot manufactured or assembledas specified by the procuring activity. In some instances ,items requiring serialization are not lotted unless re-quired by the procuring activity. Numbering of propellantlots , as,detailed in this standard is an exception to thisprinciple. Serial numbers shall not be repeated on the samepart numbered item regardless of, changes in lot numbers.

3.42 Year of production. A numeric code consisting of thelast two (2) digits of the calendar year in which the manufacture,assembly or modification of the lot was initiated. Thisnume~ic code is placed directly between the manufacturersidentification symbol and the month of production code.It becomes an integral part of the ammunition lot number.

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MIL-STD-1168A28 February 1975

4. GENERAL REQUIREMENTS

4.1 Description, use and responsibility for lot numbers.

For all ammunition end items and their components includingsmall arms, chemicals, grenades, mines, pyrotechnics, etc.,

the ammunition lot number shall consist of a manufacturersidentification symbol, a numeric code showing the year ofproduction, an alpha code representing the month of production,a lot interfix number followed by a hyphen, a lot sequencenumber and when necessary, an alpha character used as anammunition lot suffix to denote a reworked lot. The ammunitionlot number will not exceed fourteen (14) characters inlength and no characters will be separated by spaces. Theminimum number of characters used will be thirteen (13).If a one or two character manufacturers identification codeis used, the remaining positions of the three (3) characterfield will be filled by dashes (-), e.g. A--, AB-, etc. Thefollowing illustrates the construction of an ammunition lotnumber :

(a) Manufacturer’s identification symbol.

(b) A two (2) digit numeric code identifying the yearof production.

(c) A single alpha code signifying the month of production.

(d) Lot interfix number.

(e) Lot sequence number.

(f) Ammunition lot suffix (the alpha suffix).

Section 5, “Detail Requirements” specifies exceptions tothe foregoing system for numbering ammunition lots. The“exceptions refer to nonstandard lots and those requiringspecial codes and are listed in 5.1. The exceptions arebulk propellant lots, propellant increment lots, certaintypes of propellant charge lots, master calibration lots,master calibration component lots, reference lots, firstarticle test samples, experimental lots, manufacturers ‘Production control lots, functional packed lots, hybridlots , regrouped lots, and “special lots”.

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MIL-STD-1168A28 February 1975

4.1.1 Manufacturer’s identification symbol. Manufacturerpsidentification symbols shall be all capital letters, exceptas noted in 4.1, and shall not exceed three (3) alpha char-acters. This symbol is a part of the ammunition lot number. Itis used to identify the arsenal, plant, depot, station,private contractors, vendors, etc., which manufactured,assembled, renovated, modified or loaded the specific lotof ammunition. It is used in the marking of the ammunitionand the ammunition packings to assure the accurate controlof ammunition, ammunition components and explosive materielduring movement, storage, maintenance, issue and receipttransactions .

4.1.1.1 Assignment of manufacturers identification symbols.Manufacturerts identification symbols will be assignedto each manufacturer of ammunition, ammunition componentsand explosive materiels. Different symbols for each plantwill be assigned to those manufacturers who have more thanone plant

Example:

Different

producing ammunition items for the Government.

Aerojet - Generalsymbol “AJA,”Aerojet - Generalsymbol !’AJL,”Aerojet - Generalsymbol llAJD,ll

Aerojet - General

Corp. ,

Corp. ,

Corp. ,

Corp. ,Sacramento, Californi2 -

symbols will be assigned

Azusa, California -

Sacramento, California -

Fullerton, California -

Solid Rocket Plant,symbol “AJS.T’

for individual Dlantswhen the same manufacturing concern has two or more differentplants in the same city. These provisions apply also tothose manufacturers who operate GOCO facilities in additionto producing ammunition items for the Government at privatelyowned facilities.

4.1.1.2 Responsibility for assigning manufacturer??, identifica-tion symbols. Assignment of manufacturers identificationsymbols for all services within the Department of Defense(DOD) is the responsibility of the United States Army ArmamentCommand, AMSAR-QAD, Rock Island, IL 61201. It is theresponsibility of this organization to assure” that no manufac-turers identification symbols are duplicated.

4.1.1.3 Responsibilities for correct use of manufacturersidentification symbols. Each private contractor, GOGO and GOCOplant operation must be assigned a manufacturers identificationsymbol prior to the start of production of component partsor assembly of complete round items. Assurance that each

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MIL-STD-1168A28. February 1975

producer engaged initems is assigned a

the manufacture or assembly of ammunitionsymbol prior to the start of production

and the proper use of the symbol during production will bethe responsibility of the appropriate Product Quality Spe-cialist. The NICP/NMP Product Assurance Commodity Manager,responsible for issaing instructions and directives forreworks, renovations, modifications, etc. will also beresponsible for assuring that each installation performingsuch operations uses the correct manufacturers identificationsymbol at all times. Manufacturerts identification symbolscan be obtained by request in accordance with proceduresoutlined ii MIL-sTD-1461.

4.1.1.4 Listin g of manufacturers and their identificationsymbols . Manufacturers’ identification symbols are publishedin MIL-sTD-1461, titled “Ammunition Manufacturers and TheirSymbols.” An updated, completely revised standard willbe published annually. This publication contains any andall symbols previously used by or assigned to a manufacturer,load plant, depot or other type of facility. “

4.1.1.5 Changes in manufacturer’s identification symbols.Whenever a manufacturer’s identification symbol is changedby the assigning office, the next lot, reflecting the changein symbol, shall start with a new interfix number and anew sequence number in accordance with. procedures specifiedin this document. (Example: A manufacturer with the basicidentification symbol of AMC had manufactured lots AMC74GOOl-001 through AMC75AO03-006, when the identification symbolwas changed to “AMA.” The next lot manufactured was numberedAMA75BO01-001. The ammunition data cards (DD Form 165o)for each of the lots shall be properly annotated to clearlyexplain the reasons for the changes. Changes in manufacturers’identification symbols are rare. Normally,(3) basic reasons.

there are threeThey are as follows:

(a) When it is learned that a manufacturer’s identificationsymbol is bein’g duplicated by one or more producers; or

(b) When a manufacturer moves his operations fromone city to another or closes out production from one facilityto a distinctively different facility, even if they arein the same city; or

(c) When a business establishment changes names dueto change of ownership, mergers, and the like.

4.1.1.6 Required changes in manufacturer’s identificationsymbols . Use of the metal parts manufacturer’s identificationsymbols by the GOCO loading plants shall not be permitted.

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MIL-STD-1168A28 February 1975

a

LAP facilities shall affix their own manufacturers identifi-cation symbols, the appropriate year of manufacture/assembly ,month of production, lot interfix and sequence numbersto each lot processed at their facility. The same appliesto LAP plants processing propellants, propellant chargesand other types of explosives with the exception of, propellantsused in single granulation propellant charges (see 5.2).

Example: Fuze, PI, BD, M509A1 MPTS - The metal partsproducer’s lot number is AAA’74FO07-001. The LAP facilityloading the fuze shall use its own symbol, year of production,month of production, lot interfix and lot sequence number.(Example: XYZ74HO04-006 shall be the LAP lot number forthe assembled fuze.) The assembled fuze shall not retainthe AAA74FO07-001 lot number identification.

4.1.2 Year of production. Each ammunition lot numbercommencing with the first lot manufactured, assembled ormodified shall have the year of production inserted afterthe manufacturers identification symbol. The year ofproduction is a two (2) digit code represented by thelast two (2) numbers of the current year that manufacture,assembly or modification of the lot was initiated. Thereare no spaces between the manufacturers identificationsymbol, the year of production code and the alpha codeused to identify the month of production. The contractoris responsible for the correct application and placementof the year of production code into the lot number. However,ACO’S, QAR’s, PCO’S, PQS~s, Commodity Managers, Inspectors,QA Specialists, etc., are responsible for assuring thatcontractors are knowledgeable in the use and applicationof the year of production code and that the code used correctlyrepresents the year of production for the 10t.

4.1.3 Month of production. Each ammunition lot numbercommencing with the first lot produced, assembled or modifiedshall have the month of production inserted after the two“(2) digit code identifying the year of production. Themozlth of production is a single alpha code assigned asfollows:

,

January - A “May -E SeptemberFebruary - B June - F OctoberMarch -c July - G NovemberApril -D August - H December

-J-K-L-M

The single alpha code reflects the month of the year in

● which the manufacture, assembly or modification of the lotwas initiated. There are no spaces between the year of,,.

(.

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●MIL-STD-1168A28 February 1975

production code,digit of the lot

the month of production code and the firstinterfix number. A change in the month

of production does not necessitate the lot interfix numberor the lot sequence number to revert to “001.” The contractoris responsible for the correct application and placementof the month of production code into the lot number. However,ACO’S, QAR’s, PCO’S, PQSIS, Commodity Managers, Inspectors,QA Specialists, etc., are responsible for assuring thatcontractors are knowledgeable in the use and applicationof the month of production code and that the code usedcorrectly represents the month,of production for the lot.

4.1.4 Lot interfix number. Each ammunition lot numbercommencing with the first lot produced, assembled, or modifiedshall hav~ an interfix number ~ot to exceed three”(3). digits(999). The interfix number will usually start with “001”.Others will be based on the determinat.ion of those personsresponsible for assigning interfix numbers as defined inparagraphs 4.1.4.2 and 4.1.4.3.

h.1.4.l Assignment of lot interfix numbers. Assignmentof lot interfix numbers or blocks of numbers will be madeby those persons delegated with the responsibility of deter-mining when the interfix number will be changed, when andwhat blocks of interfix numbers will be used, etc. Whenthere is any uncertainty as to the last previous interfixnumber used for the item, the assignment will be coordinatedwith the master data card repository of the appropriateprocuring service, prior to “authorizing production and assignmentof an interfix number. (See 6.6 for listing of masterdata card repositories.) In most instances assignmentof interfix numbers for an item will be in numerical sequence.(Exceptions to this procedure are cited herein. ) plant,depot, etc. personnel (Government and contractor) are respon-sible for alerting persons responsible for assigning interfixnumbers when changes are anticipated.

4.1.4.2 Responsibility for assigning interfix numbers.Product Quality Specialists, as appropriate, will be respon-sible for assigning interfix numbers for those lots ofammunition components, ammunition items of issue, explosivemateriels, etc. , manufactured or assembled by the variousprivate contractors, GOGO and GOCO facilities. Delegationof this authority to plant QARts, ACOfs, etc. , does notrelieve these persons of primary responsibility. The ChiefInspectors/Quality Assurance Specialists of the QualityAssurance functions at depots, in the field, etc., willbe responsible for assigning interfix numbers for those

●items and those lots which are modified or some other typeof operation performed which will necessitate a changein the interfix number.

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4.1.4.3 Responsibility for correctness and proper use ofinterfix numbers. Persons responsible for assigning interfixnumbers (see 4.1.4.2) or those delegated the responsibilitywill be the primary persons responsible for the correctnessand proper use of interfix numbers. Once the same manufacturerhas produced a lot of an item, the interfix number mustnever revert to “001” even though several years have elapsedsince the producer last manufactured or assembled the item.Since the procuring services t master repositories retainfiles permanently, acquisition of the final interfix usedin previous production is relatively easy to obtain. Thereis no reason for interfix numbers to be used more thanonce for the same item, hence no reason for duplicate lotnumbers . All user personnel of data cards should notifythe proper persons when interfix numbers or lot numbersare incorrect, improperly shown, etc.

4.1.4.4 Actions requiring changes in interfix numbers .Under certain conditions changes in contract shall requirea change in interfix number. ‘Changes in design, manu~acturing

,. . processes, materiel, production methods, certain administrativeprocedures, suppliers, etc., shall manifest themselvesinto a change in the interfix number and all lots for thatitem prodticed under the altered conditions will have adifferent interfix number. Interfix numbers may be changedfor reasons other than those noted. herein when it is considerednecessary by the Government. Each reason for changinginterfix numbers shall be stated on the pertinent datacards in accordance with the detailed instructions containedin MIL-STD-1167. Persons generating the data cards areresponsible for properly reporting and recording interfixchanges and the reasons for the changes. The followingoccurrences necessitate changes in interfix numbers:

4.1.4.4.1 For administrative purposes.

4.1.4.4:1.1. Lot interfix numbers must

for various items made or assembledturer at the same location,

for the same item made or assembledturer at the same location at different

be

by

by

different:

the same manufac-

the same manufac-times ,

for items which may be confused with one another, or

● for different items which are of the same caliber or size.

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MIL-STD-1168A28 February 1975

4.1.4.4.1.2 If a contractor is concurrently manufacturingor loading several similar items at the same facility,then each item must have distinct interfix numbers. Thiswill be accomplished by assigning “blocks of interfix numbers”to each of the specific items considered as “items of asimilar nature”. “Blocks of interfix numbers” may be assignedto “olo~s, “ “020’s” or whatever progressions the responsibleassigning person considers feasible based on procurement,contractual and production projections. This may be accom-plished as exemplified in the following:

A contractor (manufacturerts identification symbol “AMC”)producing three (3) similar bomb tail fuzes (M800 series,.M801 series, and M802 series) should have interfix numbersassigned in accordance with the following:

At the start of production, the M800 series would be assignedthe “block of interfix numbers” from “001” to “009”, theM801 items, block “O1O” through “019”, and the M802 bombtail fuzes, interfix numbers “020” through “029”. Theinitial production lot number for the M800 would be AMC74HOOl-001. The “001” interfix series shall continue until anapprO~ed engineering change,,order or some other factorrequired a change from the 001” interfix. The next interfixnumber for the M800 production would be “002” and the initiallot produced reflecting the change would be AMC74LO02-001,then AMC’74MO02-002 and so on through AMC75JO09-001, AMCT5KO09-002, AMC75LO09-003, etc.

The first lot of M801 bomb tail fuzes shall be numberedAMC74HO1O-OO1, AMci’4JO10-002 and so on through AMCT5K019-001,AMCT5L019-002, AMC75MC119-CIC13, etc.

The first lot of the M802 series shall be numbered AMC74K020-001, AMcT4K020-002, and so on through AMC76D029-001, AMC76D029-002, AMC76E029-003, etc.

The first group to exhaust its block of interfix numberswould proceed to the next logical progression.

.Examule: The M801 bomb tail fuze production reaches lotnumber AMC76E019-012. A change in interfix number is nowrequired. This group would then be assigned a block ofinterfix numbers from “030” to “039”. As a result, thenext lot of M801 fuzes produced vill have a lot numberAMCT6F030-001. However, nose fuzes and tail fuzes withdistinct model numbers produced at the same facility maybe assigned the same interfix number. Also, primers, deton-ators, bursters, fuzes, etc., produced at the same facility

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● MIL-STD-1168A28 February 1975

may be assigned the same interfix number as long as thebasic model numbers are completely different in each case.

4.1.4.4.1.3 When a development category (XM) model numberis ‘standardized, the next lot produced as the standardizedmodel will simply be assigned the next higher sequentialinterfix number. The last sequence number will again revertto “001”.

Example: Puze , XM302 with lot number AMC74HO02-004 convertsto fuze, M302A1. The next production lot of the now stan-dardized model shall be numbered AMC7bJO03-001.

4.1.4.4.1.4 Whenever items of the same size or caliberare being manufactured or assembled by the same producerat the same facility, all such items will be assigned differentblocks of interfix numbers. In these instances, blocksof’ interfix numbers will be assigned in the order thatproduction or assembly of such items is accomplished, asnoted herein and in accordance with the provisions of

. . 4.1.4.4.1.2, 4.1.4.412.3, 4.1.4.4.2.4, 4.1.4.4.2.T, and4.1.4.4.2.8.

Loading facilities or manufacturing plants producing itemsof like size or caliber with different model numbers shallnot be allowed to use the same interfix number on any suchitems . In this way, potential duplication of lot numbersfor those items of like size or caliber shall be avoided.Additionally, it allows for simplified identification byfield users and helps to avoid use of the wrong type ofammunition in certain given situations.

The following reflects the situations noted above:

4.1.4.4.1.4.1 Different type projectiles of the same calibermanufactured or assembled by the same producer will beassigned different blocks of interfix numbers. However,projectiles of different calibers may be assigned the sameinterfix number.

4.1.4.4.1.4.2 Different type cartridge cases of the samecaliber manufactured by the same producer will be assigneddifferent blocks of interfix numbers, but cartridge casesOf different calibers may be assigned the same interfixnumber.

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MIL-STD-1168A25 February 1975

4.1.4.4.1.4.3 Different complete round items of the samecaliber assembled at the same facility will be assigneddifferent blocks of interfix numbers, whereas completerounds of different calibers may be assigned the same interfixnumber.

4.1.4.4.1.4.4 Different”type bombs of the same size withidentical manufacturer’s identification symbols will beassigned different blocks of interfix numbers, but bombsof different sizes may be assigned the same interfix number.These procedures also apply to rocket motors.

4.1.4.4.1.4.5 The following is an example of one of theforegoing situations:

An LAP facility is loading the 81mm cartridge, M375. Thelot currently being produced is numbered AMC74H011-006.At this point the same plant starts production on the 81mmcartridge, M374. The M374 cartridge production must beassigned a block of interfix numbers, preferably “020”through “039”. The first M374 cartridge lot number wouldbe AMC74H020-001, etc. When the M375 cartridge productionfinished the “019” interfix, interfix block “040” through!!059,,should then be assigned. These procedures are inaccordance with 4.1.4.4.1.2.

4.1.4.4.1.5 Chb.nge in contract. Whenever, a new contractis issued to the same producer for the same item, the materieldelivered under the new contract will have a new interfixnumber assigned, unless production under the new contractcontinues without interruption from the previous contract,all production from the previous contract has been completed,no significant technical data changes have been made, andno other events have occurred which normally necessitatechanges in interfix numbers. Interfix number assignmentsfor changes in contract will be issued in the normal sequence,exceptions have already been noted. Lot sequence numberswill again begin with !,OO1!!. At no time will the samemanufacturer (private or Government) of the same item revertthe interfix number back to “001” when production commencesunder a new contract, regardless of the number of yearswhich may have elapsed since production or loading of theitem was completed under the previous contract.

4.1.4.4.1.6 Seauence number exceeds “999.” The next higherinterfix number will be assigned in those rare instanceswhere the lot sequence number for an ammunition item manufac-tured or assembled by the same contractor reaches ‘f999sT(exceeding three digits ). The next lot produced will requirethat the sequence number again start with “001”.

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“*MIL-STD-1168A28 ~ebvuary 19T5

a

●.

Example: The lot number for an item produced by acompany with manufacturers identification symbol “AMC”is AMC75AO06-999. The next lot of this item produced willbe numbered AMC’75AO07-001.

4.1.4.4._l.7 Any conditions which warrant a change in themanufacturers identification symbol will require a changein the pertinent interfix number. (See 4.1.1.5 and 4.1.1.6. )In these instances, the interfix number will revert to“001” (exceptions already noted) and the sequence numberwill again begin with “001”.

4.1.4.4.2 For technical reasons.

4.1.4.4.2.1 Whenever production or loading of an itemis interrupted for a period of time. in excess Of thirty(30) days or for the period of time as determined by theresponsible persons as defined in 4.1.4.2 and 4.1.4.3,a change in the pertinent interfix number is required.This applies even though no physical changes to the productionfacilities or processes occurred during the shutdown.When production resumes, the next sequential interfix numberwill be assigned and the lot sequence number will againbegin with “001”.

4.1.4.4.2.2 When a contractor dismantles a productionor loading line and then, at a later date, reassemblesand commences production of the. same item, such actionswill necessitate a change in the interfix number to thenext higher sequential number. The lot sequence numberwill again revert to “001.”

k.1.4.4.2.3 Lots of the same item produced on two (2)distinct production lines using different tools. will havedifferent interfix numbers assigned based upon the orderof their production or in accordance with the “block ofinterfix numbers” procedure outlined in 4.1.4.4.1.2.

4.1.4.4.2.4 Lots of the same item produced on two (2)distinct parts of the same line will have different interfixnumbers assigned in the order of their production or inaccordance with the “block of interfix numbers” procedureoutlined in 4.1.4.4.1.2.

4.1.4.4.2.5 Lots of the same item, made by different methodsof manufacture or to new designs, so altered from thosepreviously used that a distinct change in function canbe expected, will be assigned different interfix numbersto the next higher interfix number with the lot sequencenumber reverting to “001.”

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MIL-STD-1168A28 February 1975

Example 1: A change in designation, from igniter,rocket motor, M23A1 to igniter, M23A2 will require a changein interfix number to the next higher interfix number.If the final production lot of the M23A1 was AMC’74H011-007,then the first lot of the M23A2 would be numberedAMC74J012-001. At no time will the interfix number startagain with “001” or with any other number which will resultin a duplication of interfix numbers for the entire igniter,rocket motor, M23 series, even though several years mayhave elapsed since the previous model designation was produced.

Example 2: The final production lot of the rocket,M72A1, 66mm was AMCT4D016-012. Extensive changes are made.As a result, only the rocket motor, rocket launcher andigniter system remain the same. The changes however, arereflected by merely ‘suffixing the model number to MT2A2.The first production lot of the MT2A2 must be AMC74L01T-001.Again it is emphasized that items carrying the samebasic model number and manufactured or loaded by the samefacility will never be assigned the same interfix number,resulting in duplication of lot numbers, no matter hownumerous or how extensive the design, engineering, etc. ,changes might be.

The following exemplifies an instance when the basic modelnumber changes. This necessitates starting the interfixnumber at “001” commencing with the first lot producedunder the new basic model number.

The M52A2 fuze is last- produced in 1953. After a 21 yearlapse, production is again started. However, some changesare made, such as, effecting a timing delay through anarming slider mechanism. The fuze model number is changedto M52A2E3. Since the last lot number produced in 1953for the M52A2 was MA-7-19. the first lot of the 1974 produc-tion of the M52A2E3 must be numbered MA-74BO08-001. If it isultimately determined that the item should be given a com-pletely different model number (XM717) in hope of losingthe item!s original identity with the M52 fuze series,then only at this point will the manufacturer revert backto a “001” interfix for the item.

4.1.4.4.2.6 For explosives and chemicals including blackpowder, blank powder, nitrocellulose, etc. the interfixnumber vill be used to designate different types, gradesor classea of the same materiel.

Example: Aluminum powder, type 1, grade 1, class 1will be assigned interfix ‘!OO1.!l For aluminum powder,type II grade 1, class 1 the interfix number will be “002.”Any change in any designations of the basic item will neces-sitate a change in the interfix number.

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MIL-STD-1168A28 February 19’75

4.1.4.4.2.T Changes in production lines necessitate changesin interfix numbers. If a single production line is splitinto two or more parts, a different block(s) of interfixnumbers will be assigned for those lots produced on the“new” production line(s). The lots being produced on theoriginal production line will continue with the old interfixnumber and in the lot sequence number order previouslyused until such time as a change is effected which normallyrequires an interfix number change. All changes and furtherassignment of interfix numbers will be accomplished inaccordance with the provisions of 4.1.4.4.1.2, 4.1.4.4.2.3and 4.1.4.4.2.4.

4.1.4.4.2.8 When two or more production lines are mergedinto a single line, the lots produced on the new singleline will be assigned a different interfix number in sequenceto the next highest number of those interfix numbers usedpreviously on the separate lines. The lot sequence numberwill again begin with “001.!!

Examule: Two (2) lines are producing lots with lot numbersAMc74Ho09-014 and AMC74H012-003. After the two (2) lines “are merged the next lot produced on the new single productionline will be numbered AMCT4J013-001.

4.1.4.4.3 Changes in interfix numbers will also be accom-plished when it is determined by those persons responsible forassignment of interfix numbers that it is necessary tochange or the best interest of the Government will be servedby changing interfix numbers.

4.1.4.5 Documenting changes in interfix numbers. Wheneverchanges in interfix numbers are effected all such changesshall be appropriately documented on the ammunition datacard (DD Form 1650) in accordance with the detailed instruc-tions contained in MIL-STD-1167. Any and all reasons forinterfix changes shall be clearly and precisely statedon the card for the last lot of the old interfix numberand also on the card for the first lot of the new interfixnumber. In most instances, these comments shall be insertedin the “remarks” block of the DD Form”1650.

4.1.5 Lot sequence number. The 3 digit lot sequence numberidentifies a lot according to the sequence of productionwithin each lot inter.fix number. A sequence number shallbe assigned to each lot produced regardless of the finaldisposition (see 4..3). The lot. sequence number within eachinterfix shall always begin with “001” and continue in sequence

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MIL-S!FD-1168A28 February 1975

until productionmade in the item

of the item is terminated, a change isor its production which requires “999”,

or a change in contract is made. Whenever an alpha lot

suffix is added to the lot number, the alpha characterbecomes an integral part of the lot number. The terms“lot serial number,” “lot series number,” and related havebee~ replaced for use throughout this standard by the term“lot sequence number.” Paragraph 3.41 more clearly places“serial” number in its proper perspective and use as relatedto identifying and numbering ammunition and other itemsof production.

4.1.5.1 Responsibilities for assignment of lot sequence numbers.The supplier is directly responsible for the assignmentof sequence numbers and for making changes, as necessary.However, the conditions requiring changes in sequence numberswill be specified by the appropriate procuring agency,National Inventory Control Point (NICP) or National MaintenancePoint (NMP) for the applicable item. The appropriate ProductQuality Specialists, Quality Assurance Specialists (A~o),Chief Inspectors, etc., are responsible that each produceris cognizant of the correct procedures, uses and applicationsof sequence numbers, is furnished proper guidance on acontinuing basis, and is supplied with the necessary documents(standards, bulletins, manuals, etc.) to be used for referencepurposes, direction, etc.

4.1.5.2 Responsibilities for correctness and proper use of lotseauence numbers . The contractor (either Government or private)manufacturing or assembling ammunition components, ammunitionitems of issue and explosive materiels has the primaryresponsibility to assure that sequence numbers are correctand used properly at all times. However, ACO’S, QAR’s,PCOts, PQS1s, Commodity Managers, Inspectors and otherpersons in related administrative positions are chargedwith the responsibility to make adequate checks necessaryto assure that sequence numbers are being used correctly,changed properly, etc. These persons are the cognizantauthorities for uses and applications of the sequence numbers.It is further the responsibility of all users of ammunitionto note incorrect applications of lot numbers, errors inmarkings and on documents, and othe.? related discrepancies,and to then notify the proper persons when such occurrencesare observed.

4.1.5.3 Actions reauiring changes in lot seauence numbers tothe next higher sequential number. In each of the followingevents , the lot interfix number shall remain unchanged:

4.1.5.3.1 For administrative purposes.

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MIL-STD-1168A28 February 1975

4.1.5.3.1.1 When the contractually stipulated time framefor a lot has been attained. Frequently, the contractstates that specific production time frames such as ashift, a day, a week, a month, etc. , shall constitutea production lot, regardless of the quantity producedduring the period. When such requirements have been met,a new lot sequence number, continuing in the sequence ofthe previous production, will be assigned.

4.1.5.3.1.2 When the contractually stipulated quantityhas been produced. In certain instances, a contract statesthat a particular number of units such as 5,000, 10,000,20,000, etc., shall constitute a production lot regardlessof the length of time required to produce such an amount.When such requirements have been met, a new lot sequencenumber, continuing in the order of the previous production,will be assigned.

4.1.5.3.1.3 When a new contract is issued to the sameproducer for the same item, the first lot manufacturedunder the’new contract shall have a new lot sequence numberassigned continuing in the sequence of production underthe previous contract provided there has been no interruptionin production, all production under the previous contracthas been completed, no significant technical data changeshave been made, or no other events have occurred whichnormally require a change in the interfix number. If achange has occurred which warrants a change in interfix,this will be accomplished in accordance with,4.1.4.4.l.5.There will be no instances when the same lot sequence numberwill be used following a change of contract number.

4.1.5.3.1.4 Any condition which warrants a change in themanufacturers identification symbol will result in a changein the lot sequence number (See 4.1.1.5, 4.1.1.6 and4.1.4.4.1.7). In all such events, the lot sequence numbershall always begin with “001.”

4.1.5.3.2 For technical reasons.

4.1.5.3.2.1 When production or assembly of an item isinterrupted and resumes again after a time lapse of notmore than thirty (30) days, a new lot sequence number,continuing in the order of the previous production, shallsimply be assigned provided no design changes were madein the interim or the method or production was not altered.Exceptions to this procedure are noted in 4.1.4.4.2.1.

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MIL-STD-1168A28 February 1975

h.1.s.3.2.2 All conditions which necessitate a changein the lot interfix number will also manifest themselvesinto a change in the lot sequence number (see 4.1.4.4 andall subparagraphs thereof). In each of these instances,the sequence number shall always revert to “001.”

4.1.6 Ammunition lot suffix. (The alpha suffix. ) Thelot suffix, as defined herein and when required, becomesan integral part of the ammunition lot number and is applieddirectly after the sequence number as shown below. Lotsuffixes will in all instances consist of one (1) alphacharacter and will be a capital letter. In identifyinglots of ammunition or any quantities thereof which arebeing reworked, etc., the lot suffix will be assigned inalphabetical sequence starting with the letter “A” andcontinuing through “Z”. (See 5.4 for listing of alpha characterswhose use is restricted or prohibited. )

Over time, some lots of ammunition have the year of productionshown as a part of the original lot number placed afterthe sequence number. Whenever such lots or quantities thereofare. reworked, the assigned lot suffix shall be the lastentry in the lot number, exclusive of the year of productionor any other symbols which may appear in the basic lotnumber upon application of the lot number as specifiedin 4.1.

Once a lot of ammunition or any portion thereof has beenassigned an alpha’ ammunition lot number suffix, the suffixedlot assumes an independent status and a completely separateidentity from that of the original basic lot or any quantitiesof the original lot which may be assigned a different suffixletter. Further pertinent data relevant to the authorizationand detailed use of ammunition lot suffixes is containedin 5.1.3.

4.2 Duplication of lot numbers. The proper application,assignment and use -of the lot interfix number is tbe keyto avoiding duplication of lot numbers. Strict adherenceto the provisions of the foregoing paragraphs shall domuch to eliminate the problem of duplication. Special emphasishas been given to the areas which create the preponderantnumber of problems. These are:

a. When changes in contracts are effected.

b. Whenever a component interfix is changed.

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● MIL-STD-1168A28 February 1975

c. When a long period of time has elapsed since amanufacturer produced an item.

d. When significant changes are made in the design,and item model numbers are then suffixkd.

e. ‘When administrative practices are poor.

Moreover, numerous deficiencies have been noted in thoseinstam-ces where the same contractor is producing the samecalibep in two (2) or more different items . Frequently,the contractor has assigned the same interfix numbers tosuch items. This has resulted in duplication of lot numbersin these areas.

Paragraphs 4.1.4.1, 4.1.4.2 and 4.1.4.3 affix the responsibilityfor properly assigning, changing and using the interfixnumbers to specific administrative type personnel. Theresponsibility for changing lot sequence numbers remains,for the most part, with the manufacturers. Therefore,it is imperative that specific, timely direction be given

. . to the contractor relative to inte’rfix number change requirementswith the special emphasis in the areas cited in the “a”thru “e” above, as noted in 4.1.4.4.1.4.1 thru .5 and inall other instances herein when events necessitate or requirea change in the interfix number.

,.

4.3 Mandatory numbering of ammunition lots. When drawings,specifications, other documents or special direction soindicate, each lot of ammunition components, ammunitionitems of issue, explosives, etc., must have a lot numberassigned at the time of manufacture or assembly, regardlessof the ultimate, disposition of the lot. This means thatlots which have been rejected and then are scheduled forreworking, demilitarization, scrapping, etc., must havea basic lot number assigned. Only by so doing, shall propercontrols be continually exercised.

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MIL-STD-1168A28 Febru2ry 1975

5. SPECIAL AND DETAILED REQUIREMENTS

5.1 Description and Use of Ammunition Lot Numbers Under SpecialConditions.

5.1.1 Non-Standard and Renovated Lots. The following ia

a list of nonstandard and renovated lots with their corre-sponding lot identifier codes. This list only includesthose lots that require special marking identificationin the lot number for proper handling. The lot identifiercode is a capital letter inserted in the ammunition lotnumber by replacing the hyphen with the appropriate alphacode or inserted into the propellant lot number by replacingthe numeric character

,,.,,immediately after the hYPhen

with the appropriate alpha code as specified in the followingparagraphs.

TYPES OF NON-STANDARD k RENOVATED LOTS LOT IDENTIFIER CODE

Experimental Lots EFirst Article Lots AFunctional Packed Lots LHybrid Lots HManufacturer’s Production Control Lots PMaster Calibration Component Lots and

Master Calibration Lots cReference Lots RModified Lots MOverhauled Lots vRegrouped Lots (includes reblended

propellant lots) GSpecial Lots - Proving Ground Tests,

Special Requirements, Special Tests,Engineering Tests, etc. s

5.1.1.1 Experimental lots. (The “E” lots.) These lots shallbe identified by replacing the hyphen between the lot interfixnumber and the lot sequence number with a capital letterIIE!I. The appropriate manufacturer’s identification symbolwill be applied and the lot sequence number shall identifyin sequence the number of experimental lots developed bythe particular manufacturer. The lot interfix number shallbe identified by the numeric characters “000”. At no timewill the same manufacturer duplicate experimental lot numberseven though the type of materiel involved is different.Experimental lots will be numbered in accordance with thefollowing:

1st Experimental Lot: PA-74KOOOEO012nd Experimental Lot: PA-74Koo!3Eo023rd Experimental Lot: PA-74LOOOEO03etc.

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mExperimentalinstructions

MIL-STD-1168A28 Febru@ry 197’5

lots are produced in accordance with specialand are covered by engineering production

orders . Experimental lots are those generally small quantitiesof ammunition items that are produced for:

(1) Research and development.(2) Engineering design tests and special tests for

engineering evaluation.

Special and engineering tests performed outside the placeof manufacture, such as at the proving grounds, are normallycovered by engineering test pr@gram requests - exclusiveof engineering production orders. Ammunition designatedas experimental lots will not be issued for field use norflow into the regular supply stream without special andspecific authorization of the applicable NICP/ NMP element.

5.1.1.2 First Article lots. (The “A” lots.) These typesof lots shall be identified bv renlacing the hYDhen betweenthe lot se~ies numbera capital “A”.

AMci’5BoolAool.AMc-f5coo1Aoo2,.AMC75MO02AO01etc.

Uses and applications

and the- lot-seque~ce num~~r ‘with

(Indicates interfix 001-first submission)(Indicates interfix 001-second submission)(Indicates interfix 002-first submission)

of the manufacturer~s identificationsymbol, the year of production code, the month of productioncode and the lot interfix procedures remain consistentwith the pertinent provisions of this standard. The term“first article lots” is used herein and replaces previoususe of such terms as , “reproduction lots” , “pilot lots”,“initial production” , “prototypes”, “first lots” , etc.This is in accordance with section 1, part 19 of the ArmedService Procurement Regulations.

5.1.1.3 Functional packed lots. (The “L” lots.) Theselots shall be identified by replacing ths hyphen betweenthe lot interfix number and the lot sequence number witha capital letter “L”. The appropriate manufacturers identi-fication symbol shall be applied and the lot sequenbe numbershall identify the order of production of a particularpack. At no time shall the same manufacturer duplicatefunctional lot numbers for items of a similar nature or

●for the same item in different combinations. Functionallots shall be numbered in accordance with the following:

(’

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MIL-STD-1168A28 February 1975

Examples :

Cartridge, 20.mm,1st Functional2nd Functional

Cartridge, 20mm,1st Functional2nd Functional

Cartridge, 20mm,1st Functional2nd Functional

Cartridge, 20mm,1st Functional2nd Functional

1+-HEI,lot ---lot --

7-HEI ,lot --lot --

1-HEI ,lot --lot --

M56A3, and 1-TP-T, M220LC-74EO01LO01LC-74EO01LO02

M56A3, and 1-TP-T, M220LC-74EO02LO01LC-?4EO02LO02

M21O , 2-INC, M96 and 2-AP-T, M95LC-74GO02LO01LC-74GO02LO02

4-TP, M55A2 and 1-HEIT-SD, M246lot -- LC-74BO03LO01lot -- LC-T4CO03LO02

Cartridge, 7.62mm, 4-Ball, M80 and l-Tracer, M621st Functional lot -- TW-74AO01LO012nd Functional lot -- TW-74AO01LO02

Cartridge, 7.62mm, 9-Ball, M80 and l-Tracer, M2761st Functional lot -- FAA74AO01LO012nd Functional lot -- FAA74Bo01LO02

5.1.1.4 Hybrid lot (The H Lots.) A hybrid lot of ammunitionis an item of assembly or item of issue lot consistingOf components of various interfix numbers or manufacturersin excess of the number permitted in the item of assemblyor item of issue detailed specification. The primary purposefor the formation of hybrid lots is to reduce the waste ofremnant accumulations of component items and lots throughutilization in one or more conglomerate lots. Strict controlsmust be exercised to insure satisfactory and uniform per-formance of the item of issue. The procuring activitymust authorize any formation of a hybrid lot before, notafter, it is created. Hybrid lot’s must be formed fromrexunants of acceptable item-of-assembly lots which areconsidered to have an inherent quality of performance goodenough .to economically Justify their formation and shouldonly be authorized for those cases in which experiencehas demonstrated that the safety and functioning of theitem will not be jeopardized to any undesirable extent.Once a hybrid lot is authorized and produced it shall benumbered in accordance with the provisions of this standard.A hybrid lot shall be identified by replacing the hyphenbetween the lrt series number and the lot sequence number

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MIL-STD-1168A28 February 197S

,e

in the ammunition lot number with a capital letter “H”.Other pertinent and identifying information will he placedin the “remarks” block of the Ammunition Data card (DDForm 165o) in accordance with detailed instructions con-tained in MIL-STD-1,167. When formation of a hybrid lot

is approved, it shall retain the same interfix number andsimply be assigned the next higher lot sequence numberthan that of the last regular lot produced as shown inthe following example:

Example: A manufacturer has produced 37 lots in the“OO4” interfix series of a particular item of assembly.The last lot number of this production is AMC74KOOh-037.The producer finds he has a large amount of componentsremaining which are from an assortment of manufacturersand metal parts lot numbers. The quality throughout theproduction of the “004” interfix series had been good.He requests permission to produce a “hybrid lot” with aquantity of approximately 8,OOO units. Upon receivingapproval he produces a “hybridunits. The lot is numbered as

AMCT4LO04.H038

Occasionally more than on-e (1)

lot” consisting of 8,127follows:

hybrid lot would be formedwithin an interfix. Ins.uch instances, the lot sequencenumber would progress in the usual manney--AMC74MOO4HO39 ,AMc75A004g040, etc. Year of production and month of productionwould progress as appropriate.”

5.1.1.5 Manufacturer’s production control lots. (The “p”lots.) These lots are usually used for the testing of itemsso that the manufacturer can judge the effectiveness ofhis production methods. Each manufacturers productioncontrol lot submitted for a test shall be identified bya lot number. The manufacturers identification symbolshall be the same as that used for normal production. Thelot interfix number reflects the relationship of the materialbeing tested and that in regular production. The lot sequencenumber shall bear no relationship to normal productionlots , but. shall be assigned in a numeric sequence, beginningwith ~!OOIttto designate the teSt number. The capital letter .“P” shall replace the hyphen between the lot interfix numberand the lot sequence number. in the ammunition lot number.For propellants the numeric character “O” directly afterthe hyphen shall be replaced with a capital letter ‘tP’lin the propellant lot number. This will identify the lotas a manufacturers production control lot. The followingare examples of the numbering of a manufacturers productioncontrol lots when it is resolved to run tests during productionof the “003” interfix:

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MIL-STD-1168A

28 February 1975

Han Propellant Propellant

AMC74AO03PO01 (first test) RXA74B-POOOO1

AMC74AO03pO02 (second test) RXA74B-POOO02AMCT4AO03PO03 (third test) RXA’74B-POOO03

The year and month codes shall identify the year

(first test)(second test)(third test)

and monthof manufacture of the initial production of the manufacturersproduction control lot for the item.

5.1.1.6 Master Calibration component lots and master cali-bration lots. (The “C” lots.) Non-propellant componentor end item lots approved as master calibration lots shallbe identified by replacing the hyphen between the lotinterfix number and the lot sequence number with a capitalletter “C”. Propellant lots approved as master calibrationlots shall be identified by replacing the character immediatelyafter the hyphen in the propellant lot number with a capitalletter “C”. The new lot number shall be applied directlyto the Ammunition Data Card and all appropriate controllingdocuments. Any detailed comments should be made in the“remarks” block of the Ammunition Data Card. As a minimum,the new lot number shall be marked on all external packages

●or cartons, and if necessary, applied directly to the individual‘units for identification purposes. Upon selection of a lotto be a calibration lot, the appropriate procuring activity isresponsible to notify the manufacturer of. the selection andto take actions needed to apply the appropriate identificationto the individual units in the lot, the containers in whichthe lot is packed, the Ammunition Data Card (DD Form 165o)for the lot, and all other pertinent documents. Where only aportion of a lot is approved as a calibration lot, then onlythose units will be marked appropriately.

5.1.1.7 Reference lots. (The !!R!!~ots.) These 10ts Pertain

to the reference standard component lots and referencestandard items of issue lots for items above 30mm and referencelots for small arms ammunition. Non-propellant componentor end item lots approved as reference lots shall be identifiedby replacing the hyphen between the lot interfix numberand the lot sequence number with a capital letter ‘fR!’.Propellant lots approved as reference lots shall be identifiedby replacing the character immediately after the hyphenin the propellant lot number with a capital letter “R”.The appropriate manufacturers identification symbol,year of production code and month of production code remainconsistent with the pertinent provisions of this standard.For small arms reference lots, the lot sequence numbershall be used to identify in sequence the number of reference

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lots produced by the manufacturerfacturer!s identification symbol.

MIL-STD-1168A28 February 19’75

identified with the manu.The interfix number

will be the number “000”. ~t no time shall the same me.nufac-turer duplicate a reference lot even though the type ofmaterial involved is different. Lot numbering of referencelots is illustrated by the following:

a. For’small arms.

1st reference lot: LC-74LOOORO012nd reference lot: LC-75BOOORO023rd reference lot: LC-75DOOORO03

b. Other than small arms:

LC-74D031-009 was selected and approved to be areference lot. The new lot number becomes LC-75D031RO09.

The new lot number shall be applied directly to the AmmunitionData Card and all appropriate controlling documents. Anydetailed comments should be made in the “remarks” blockof the Ammunition Data Card. As a minimum, the new lotnumber shall be marked on all external packages or cartons,and if necessary, applied directly to the individual unitsfor identification purposes (see 6.1). ,,,

5.1.I..8 Special lots. (The “S” lots.) The “S” eliminatesuse of interfix designations “PG”, “SR”, “ST”, “SP”, etc.Certain lots of ammunition are manufactured for speciallyexpressed purposes, such as proving ground tests, specialrequirements, special tests, engineering tests, etc. Generallythey are not intended for use as service or training ammuni-tion. Presently, these lots are identified by variousalpha symbols used as an interfix. These “S” lots shallbe numbered consecutively regardless of type and size of theitem and no matter how small the quantity. Lots shallsimply be numbered ABC74FO01SO01, ABc74Fo01so02, etc. WhenABC78DO01S999 is reached the producing facility shall continuenumbering by merely changing the interfix to 002. Thenext “special lot” of these types would then be ABC78EO02SO01,etc. The following exemplifies this type of lot numbering:

A quantity of grenade bodies is diverted from an assemblyline and is loaded with an inert filler in lieu of an explosivebursting charge. A standard line fuze is then assembledto the inert loaded grenade bodies. This special lot isbeing assembled for use in special tests. Lot numberABC74KO01SO01 will be assigned. At the same plant a speciallot of a completely different item is prepared. This.lot

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MIL-STD-1168A28 February 1975

number will be ABC74LO01SO02. (No national stock numberwill be assigned/used for these special lots. The soleidentification for these lots will be the complete nomen-clature and the lot number. ) The authority for creationof the special lot, how it is to be used, where to be used,the test project designation and all other informationpertinent thereto shallbe cited in the “remarks” blockof the Ammunition Data Card. The “S” lots will not beissued for field use nor flow into the regular supply streamwithout special and specific authorization of the applicableNICP/NMP element.

5.1.1.9 Regrouped lots. (The “G” lots.) The “G” lotsshall be identified by replacing the hyphen between thelot interfix number and the lot sequence number with aCapital letter !!Gtl. Lot numbers shall be assigned in thenormal manner with the interfix numbering beginning at“001” and advance numerically in accordance with the pro-visions contained herein for assigning lot interfix numbers(see 4.1.4 and all paragraph thereto). These lots occuronly when regrouping action of lots is performed or therework of the basic lot is of such proportions a-s to clearlydestroy the principles of lotting concepts. The regroupingaction may or may not include modification, conversion,overhaul, relending,” or extensive maintenance. Work maybe performed at LAP ‘facilities, depots, bases, etc.. Newlots shall be formed in accordance with the requirementsof the regrouping directive. The manufacturer’s identificationsymbol shall be that of the activity performing the renovation/regrouping. The year and month codes will be identifiedby the year and month in which regroupin~ was initiated.The following exemplifies the numbering of regrouped lotsby a given depot for any item on which regrouping operationsare performed:

AMAT5AO01GO01, AMA75AO01GO02, etc.AMA75CO02GO01, AMA75CO02GCI02, etc.AMA75EO03GO01, AMA75EO03GO02, etc.AMA7’5GO04GO01, AMA75GO04GO02, etc.

Assignment, changes, etc., of lot interfix numbers andlot sequence numbers for the !’G” lots, shall be accomplishedin the same manner as normal production lots as outlinedin 4.1.4 and 4.1.5 and all subparagraphs thereto. Inall such actione detailed comments must be inserted inthe remarks portion of the data card including a listing ofthe former lot(s) being renovated, modified, regrouped,etc. Proper use and. application of the “G” lots is theresponsibility of the PQS, PCO, Chief Inspector or the

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.. ..

MIL-STD-1168A28 February 1975

NICP/NMP Product Assurance Commodity Manager, as appropriate,in accordance with the conditions under which the workis performed.

5.1.1.10 Modified lots. (The “M” lots.) These lots shallbe identified by, replacing the hyphen between the lot interfixnumber and the lot sequence number with a capital letter“M” . The lot number shall be assigned in the normal mannerwith the manufacturers identification symbol being thatof the facility performing the modification, and interfixnumbering beginning at “001” and advancing numericallyin accordance with the provisions contained herein forassigning lot interfix numbers (see b.1.4 and all paragraphsthereto). Modification may or nay not be performed whenregrouping of lots is being accomplished.

5.1.1.11 Overhauled lots. (The “V” lots.) These lots shallbe identified by replacing the hyphen between the lot interfixnumber and the lot sequence number with a capital letter,,v,f. Overhauled lots are “regular production” lots whichhave had required exterior maintenance performed on them

.0’(see 3.2’7). No change is made in the basic lot numberexcept as described above.

5.1.2 Partial lot. As noted in 3.29, a partial lot isprimarily defined as a sub-division of a normal ammunitionlot. Partial lots are usually permitted for use to expediteshipments and deliveries of critically needed items, asa convenience in controlling production quantities of ashift, day, week, etc., to facilitate ease of shipments,e.g., an exact amount for loading in a railroad car orsemi-trailer, or to allow for split shipments to two (2)or more plants, depots, etc.. Their intended purposes aridusage are temporary. Identification should only be shownon the appropriate controlling documents which, if desired,can be destroyed after the “partial!t has served its intendedpurposes. Partial lots shall simply be identified withthe basic lot in a numerical sequence based on the orderof production. This information will be placed in theremarks block of the ammunition data card and shall notbe a part of the lot number per se. Details, relativeto this area, are appropriately incorporated into the procedurescontained in MIL-STD-1167. Authorization to manufacture,assemble and move partial lots ~f ammunition is a functionof the applicable procuring activity.

●5.1.3 Ammunition lot suffix. (The alpha suffix.) Thebasic principles, formation and limitations of the ammunitionlot suffix are discussed in 4.1.6 and 5.4. The followingdescribes the specific, detailed uses, applications andrestrictions of the ammunition lot suffix:

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MIL-STD-1168A28 February 1975

5.1.3.1 When a lot of material is rejected’ at the pointof Original manufacture or assembly and it is determined

that the lot can be made usable by reworking the material,the new lot shall be identified by the addition of a capitalletter “A” after the lot sequence number. In the eventthat the WA!! ~~ffi~ed lot is reworked at the production

plant, the lot suffix “A” would be replaced by a capitalletter “B”.

Examples : Lot AMC74JO06-O02 original production lot, is re-jected. After reworking, the lot number becomes AMC’74JO06-002A.The reworked lot AMC74JO06-002A is rejected and reworked.The new lot number then will be AMCT4JO06-002B, etc. Lotsuffixes will be assigned in alphabetical sequence as definedin L.1.6 with exceptions as noted in 5.4. Lot suffixesfor new production lots will be authorized by the appro-priate QAR, ACO, PCO or PQS.

5.1.3.2 When a lot of ammunition or a quantity thereofhas been designated for reworking at a facility other thanthe original plant (i.e., depot, station, field, ship,base, ktc.), then the facility performing the rework shallrequest a suffix assignment for the specific quantity ofthe item and lot number for which the rework is to be performedfrom the appropriate procuring activity designated element(see 5.1.3.4). The request must also stipulate the changesbeing made during the. rework process. The first changeor rework performed on a lot of ammunition or a quantitythereof shall be identified by affixing a capital lettersuffix “A”, the next change or rework of the same basiclot or quantity thereof for the same item shall be identifiedby the addition of a “B” suffix, etc., as exemplified inthe following:

a. The original quantity of AMCT4JO02-012 is 10,000rounds. Three (3) years later 2,000 rounds at depot I aredefuzed and plugged. This 2,000 quantity now becomesAMC74JO02-012A.

b. Depot II has 3,000 rounds of the same basic lot.Four (4) years later it is found that 1,500 of these roundsneed replacement primers. The 1,500 are then identifiedas AMC74JO02-012B. The 1,500 rounds with the originalprimer remain as AMC74JO02-012.

c. Four and one-half (4 1/2) years after production,depot III determines to defuze and plug the 800 roundsof the same basic item and lot which they have in storage.This 800 quantity would now be identified as AMC74JO02-012C.

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,0

MIL-STD-1.168A28 February 1975

d. Five (5) years later depot I decides to unplugand refuze 1,000 rounds of the original 2,000 rounds whichwere defuzed and plugged. This 1,000 rounds now becomesAMc74Jo02-012D .

Different suffixes must be assigned ~or different typesof reworks which are performed on the same basic item.Different suffixes must also be assigned even when thesame type of rework is performed at a different time ordifferent place as exemplified in a and c above,. For instance,X-raying of.separate quantities of the same basic itemat different times, even if performed at the same depot,would necessitate the assignment of different suffixesto identify each of the quantities X-rayed.

5.1.3.2.1 When lots are assigned a suffix during production(see 5.1.3.1) and later require -reworking in the field,the next sequential alpha will be used to identify thequantity being reworked in accordance with exceptions notedin 5.4.

5.1.3.2.2 When lots or portions of lots of ammunitionare being reworked at depots, in the field, etc. , the author-ization for issuing rework instructions and the types ofoperations to be performed, quantities, etc., is the respons-ibility of the appropriate NICP/NMP agency.

5.1.3.3 More extensive use is to be made of lot suffixesin identifying reworks etc., performed on a lot of ammunitionunder the conditions described in 4.1.6, 5.1.3.1, and 5.1.3.2.The identity of the “parent” lot must be retained so longas it is considered practical or economically feasible.This can be accomplished as long as the changes effected,when reworking, are properly recorded in the “remarks”portion of the revised data card. Also, definitive informationrelative to the planned rework procedure must be submittedwhen the lot suffix is requested. Broadening the scope,application and use of the lot suffix to identify changes,modifications , renovations, etc., to the “parent” lot providesa more efficient method to control the basic lots in eventsof malfunctions, suspensions and releases as exemplifiedin the following:.

Fuze, PD, M48A3 can be utilized in various configurations,i.e., fuze, PD, M48A3; fuze, PD, M48A3 with adapter assubstitute for fuze, PD, M521; fuze, PD, M51A5; and fuze,

●PD, M557. As previously applied (in MIL-STD-1168, paragraph5.1.2, dated 30 June 1965, subject: Military StandardLot Numbering of Ammunition and TM-9-1300-250, paragraph

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MIL-S’TD-1168A28 February 1975

7.3.b, dated September 1969, subject: Ammunition Mainte-nance), the lot number of the basic M48A3 fuze would. havechanged to a “500 series” interfix number each time thefuze was converted to another configuration. In the eventa malfunction occurred with the basic model fuze, it requiredextensive data card screening world wide of all the “500interfix” fuzes to determine the pertinent “parent” lotnumber; whereas retention of the basic lot number willreduce the search effort and allow more ‘rapid identification,resulting in effectingmanner.

5.1.3.4 Once a reworklot of ammunition or athan a new productionrework shall request a

suspensions and releases in a timelier

procedure has been issued for aquantity thereof to a facility otherplant, the facility performing thesuffix in accordance with the following:

5.1.3.4.1 For the Air Force-- Commander, Ogden Air MaterialArea, ATT.N: 00AMA (MMSS), Hill Air Force Base, UT 8k406.

5.1.3.4.2 For the Navy-- Department ofShips Parts Control Center, ‘ATTN: CODEPA 17055.

5.1.3.4.3 For the Army-- Commander, USATTN: AMSAR-QAD, Rock Island, IL 61201,of” guided missiles and large rockets asbelow.

the Navy, US Navy734, Mechanicsburg, e

Army Armament Command,with the exceptionnoted in 5.1.3.4.4

5.1.3.4.4 For guided missiles and large rockets as appro-priate-- Commander, US Army Missile Command, ATTN: AMSMI-NL/NE (NMP), Redstone Arsenal, Huntsville, AL 358o9.

5.2 Propellant lot numbers. The lot numbering systemfor standard ammunition as defined in paragraph 4.1 willnot be followed for assigning lot numbers to bulk propellants.The following illustrates the construction of a propellantlot number.

(al+?!-~$hf)

(a) Manufacturerts identification symbol.(b) A two (2) digit numeric code identifying the year

of production.(c) A single alpha code signifying the month of produc-

tion.(d) A one (1) digit code signifying regular production

propellant lots or non-standard propellant lots as speci-fied in the following paragraphs and 5.1.

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numl

The

MIL-STD-1168A28 Fel,ruary 1975

e) A five (5) digit number representing the serialer.f) Ammunition suffix (the alpha suffix).

appropriate manufacturer’s identification symbol (see3.23)-and-the correct month and year of production (see3.25 and 3.b2) must be applied. Propellant lot serialnumbers (see 3.41) shall range from “00001’! to ‘!99999!!.

Propellant lot numbers shall not exceed fourteen charactersin length and no characters shall be separated by spaces.The minimum number of characters used shall be thirteen(13). This occurs only if no ammunition lot suffix isadded.

Regular production lots shall be identified by retainingthe numeric character

,,.,,immediately after the hYPhen

in the propellant lot number, while those lots not of regularproduction, included. in the non-standard lots (see 5.1),shall be identified by replacing that numeric character“O” with the appropriate lot identifier code.

Propelling charge-s for both fixed and semi-fixed ammunitionwill carry the same lot number as that of the bulk propellantin their manufacture. Separate loading propelling chargesusing more than one propellant will be assigned one (1)lot number and that shall be a standard ammunition lotnumber.

5.2.1 Reprocessed propellant lots. Elimination of the interfixdesignation “R”. Propellant lots that are reprocessed withoutlosing their physical identity will be considered as havingundergone a rework operation. The ammunition lot suffixwill be used for these lots. The propellant lot number willremain the same except for the addition of the alpha suffix.No change is required for the year and month in which thereprocessing was accomplished as illustrated below:

RADT4K-O6721O is reprocessed. The new lot number becomesRAD?4K-o6721oA.

5.2.2 Reblended propellant lots. Elimination of the interfixdesignation “B”. Propellant’ lots that are reblended willbe classified with the regrouped lots (see 5.1.4). Reblendedlots will be identified by replacing the number “O” directlyafter the hyphen with a capital letter “G”. The year andmonth codes will be, identified by the year and month in whichblending of the propellant lot was initiated. A blending of one or

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MIL-STD-1168A28 February 19’75 ●more propellant lots acquires new chemical characteristicsand will require a new serial number to be assigned. Themanufacturers identification symbol shall be that of theactivity performing the relending operation. The followingexamples illustrate the identification of reblended propellantlots :

RADT5H-068728 is reblended in October of ~9T6. The new lotnumber becomes RAD76K-G68728.

RAD75B-067777 and RAD75K-067792 are blended together in

September of 1976. The new lot number becomes RAD76J-G68002.

5.2.3 Reblended and reprocessed propellant lots. Eliminationof the interfix designation “BB”. Propellant lots thatare both simultaneously blended and reprocessed will beclassified in the category of a reblended propellant lotand shall follow the corresponding identification procedures(see 5.2.2).

5.3 Marking of lot numbers on explosive components, inertcomponents , complete rounds, and guided missiles. (l’hissection is not to be used as instructions to the servicedraftsman for the preparation of marking drawings. ) Guidedmissile explos’Lve components shall be lot numbered in accord-ance with MIL-’L-9931 (USAF) for the Air Force.

5.3.1 Marking drawings (for contractors Dreparing drawing).Drawings shall be prepared for each item showing all requiredmarkings . These drawings shall locate, describe, and specifymethod(s) and materiel(s) for all markings and shall beknown as “marking drawings .“ All “marking drawings” shallbe forwarded to the procuring activity for review and approvalbefore commencing the manufacture of the ammunition orexplosive materiel involved. Marking shall be accomplishedin accordance with the appropriate “marking drawing.”

5.3.2 ExDlosive loaded components. (See 5.3.) Each explosiveloaded component shall be identified by a loaderts lotnumber which shall appear on the item itself whenever sizepermits. The location, method of marking, and size ofthe lot number shall be shown on the..,,applicable “markingdrawing” . The marking shall be permanent in nature and mayconsist of a stamping in the materiel of the item; a perma-nently attached nondestructible plate; or stenciling witha marking fluid of materiel that is highly resistant toweather and wear. The method of marking shall be an engineeringdetermination (see 6.1). The location of the marking shall ●be an engineering determination also, due to such considerations

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✎✎

MIL-STD-1168A28 February 137’5

as kind of materiel to be marked, size and shape of item,etc. The size of the marking shall be such that identifi-cation of the lot number may be readily determined. Examplesof such components are fuzes, igniters, warheads and rocketmotors . Loaded components are defined as those componentscontaining explosive materiel and the lot numbers areknown as component numbers.

5.3.3 Inert components. Inert components, subassemblies,and parts, whenever the size permits, shall be markedwith their respective lot numbers similarity to loadedcomponents . When size does not permit marking on theindividual item the lot number shall be recorded/markedon the appropriate packing containers.

5.3.4 ComPlete assembled rounds. Complete assembledrounds, small caliber cartridge (below 20mm) and guidedmissiles excepted, shall be identified by lot numbers onthe item itself. (See 6.1 for other type exceptions. )The location, method of marking, size, and color of thelot number shall be as shown on the applicable “markingdrawing.” Marking shall be done by the stenciling methodusing a stencil ink, fluid, or other material that is highlyresistant to weathering and wear. The markings shall beprominently displayed on the body of the items in sucha manner as to be easily read. Marking shall be accomplishedin the color specified for the type of ammunition or explosivemateriel concerned.

5.3.5 Guided missiles. (See 5.3.) Guided missiles ascomplete items of ammunition may or may not be lotted.Guided missiles do, however, contain explosive loaded compo-nents . These components shall be lotted and properly identi-fied by the loaderts component lot number. If specificallyrequired by the procuring activity, the complete nomenclatureand lot number of each explosive component shall be stenciledon the body of the guided miesile. The size of the markingsshall be consistent with the size of the missile. Markingshall be accomplished by stenciling. Details of markingshall be shown on applicable “marking drawings.” Completeround guided missiles renovated or modified by either replacingor modifying the original explosive components require thata suffix be added either to the serial number or lot number.A suffix may also be used to control nonexplosive changesthat are directed by the responsible organization. Instruc-tions for each application are funished in the respective

●‘Technical instructions. When a suffix is required but notfurnished in the above instructions it will be requested fromthe responsible activity.

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MIL-STD-1168A28 February 1975

5.4 Exceptions to use of certain letters as ammunition 10tsuffixes. (See 4.1.6 and 5.1.3.) When reworking any itemsOf ammunition at an LAP facility, depot, -etc. , where theapplication of an ammunition lot suffix is required, thefollowing letters shall not be used as suffixes except—as noted herein:

(a) ltE1t - no exceptions other than as used to denoteexperimental lots. (See 5.1.i.l. )

(b) “I” - no exceptions. Can easily be confused withthe number “l” .

(~) 110!! - no exceptions. Could be easily mistakenfor the number “O” [zero).

(d) ‘lX1l_ no exceptions. (See 6.2.)

5.5 Required use of complete lot number. In referenceto individual lots, whether in correspondence, in records,or in marking containers, packages, cartons, etc. , thecomplete lot number shall be used.

5.6 Elimination of the “500 series”. The “500 series”interfixes were previously used to identify lots whichwere regrouped. Implementation of th+provisions of 5.1.1.9[The “G” lots) in their entirety eliminates any need fora “500 series”, since differentiation of whether modificationsare performed while regrouping becomes irrelevant.

5.’7 Elimination of the use of “PG”, ,15P,, “SR” , tt5Tll etc.,in lot numbers. With the introduction, adoption, and imple-mentatio’d of the provisions of 5.1.1.8 special lots --the ,15,1lots, the-need or u5e of interfix designators such

as llpGll, 115PII,ItsTll 115*I1, etc., no longer exists. Thereforethe use of such int~rfix designators is no longer authorizedor will no longer be permitted and the provisions of 5.1.1.8adhered to.

5.8 Elimination of the use of “B”. “R”. and “RB” in propellantlot numbers. Implementation of the provisions of 5.2.1,5.2.2 and 5.2.3 in their entirety eliminates the need forthe use of IIB,I,IIR,I,and IIRBIIfor identifying reblendedand reprocessed propellant lots.

5.9 Documenting information Dertinent to lots produced undersuecial conditions. Actions and reasons pertinent to forming,numbering, and identifying any and all ammunition lotsproduced under special conditions shall be explained indetail in the remarks .block of the ammunition data card.These remarks shall include a listing of the lot(s) beingreworked, modified, regrouped, etc.

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.’0 MIL-STD-1168A28 February 1975

6. NOTES

6.1 Items. Items (squibs, small arms cartridges, etc.)too small to be identified by lot number or serial numberon the item proper may be identified by tag or like methodsif considered necessary or desirable. As the minimum,

the lot number shall be recorded/marked on the packagingmateriel down to and including the smallest intermediatepack. Determinations of these types are functions andresponsibilities of the ap~. apriate engineering agency.(See 5.3 and pertinent sub-p~.agraphs thereto. )

6.2 Historical information. At one time steel cartridgecases were assembled to comple,.e rounds and were identifiedby the addition of a suffix “k” to the lot sequence numberof the complete round lot number. Example: AMC-1-lX. Thispractice is no longer required and will not be used infuture production. However, as noted in 5.h.(d) the letter,1x,!is not to be used as a 10t SUffiX.

,*6.3 “Ammunition Manufacturers and Their Symbols”, MIL-sTD-1461.Initial copies, revisions, and supplements to MIL-STD-1461titled “Ammunition Manufacturers and Their Symbols” may beobtained by writing or calling the Commander, United StatesArmy Armament Command (USAARMCOM) Product ‘Assurance Direc-torate, AMSAR-QAD, Rock Island, IL 61201.

6.4 Method for obtaining reauired technical data. Copies ofspecifications, standards, drawings and publications requiredby contractors in connection with applicable procurementand production functions should be obtained from the appro-priate procuring service NICP/NMP or as directed by thepertinent contracting officer, commodity manager, administer-ing officer, QAR or PQS.

6.5 Procedure for requestin~ lot suffixes. Requests forsuffixes should be directed to the appropriate procuringservice NICP/l?MP as outlined in 5.1.3.4. These are theonly agencies authorized to issue lot suffixes for use out-side of new production plants. All suffix requests shouldbe documented e.g., letter, teletype, etc.

6.6 Method for acquiring ammunition data cards. Each serviceshall maintain its own repository for ammunition data cards

,0as follows:

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MIL-STD-1168A28 February 1975

6.6.1 For the Navy - Department of the Navy, US Navy SPCC,ATTN : Code 734, Mechanicsburg, PA 17055.

6.6.2 For the Air Force - Commander, Ogden Air Materiel Area,ATTN: 00AMA (MMSS), Hill AFB, VT 84406.

6.6.3 For the Army - Commander, US Army ArmamentATTN: AMSAR-QAD, Rock Island, IL 61201.

6.6.4 All requests for copies of ammunition datamust be directed to the appropriate agency.

Custodians: Preparing

Army- PA Army-PANavy-.osAir Force-70

Command,

cards

Activity:

Project No.: 1395-0600

Review Activities:Army-MINavy-MC

- 0s

Air Force - Code 70

*

User Activities:Army-MI

-PANavy-MC

- 0sAir Force-70

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