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है”ह”ह

IS 12952 (2005): Grooved Pins - Full-Length ParallelGrooved, with Chamfer [PGD 31: Bolts, Nuts and FastenersAccessories]

IS 12952:20051s0 8740:1997

WFTia?*,

(m yli%w )

Indian Standard

GROOVED PINS — FULL-LENGTH PARALLELGROOVED, WITH CHAMFER

( First Revision)

ICS 21.060.50

(3 BIS 2005

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

August 2005 Price Group 2

Bolts, Nuts and Fasteners Accessories Sectional Committee, MGP 33

NATIONAL FOREWORD

This Indian Standard ( First Revision ) which is identical with ISO 8740 : 1997 ‘Grooved pins —Full-length parallel grooved, with chamfer’ issued by the International Organization for Standardization( ISO ) was adopted by the Bureau of Indian Standards on the recommendations of the Bolts, Nuts andFasteners Accessories Sectional Committee and approval of the Medical Instruments, General andProduction Engineering Division Council.

The original version of this standard was issued in 1990. This first revision is being publishedharmonizing with adoption of ISO 8740:1997 to make pace with the latest developments taken placeat international level.

The text of ISO Starrdard has been approved as suitable for publication as an Indian Standard withoutdeviations. Certain terminology and conventions are, however, not identical to those used in the IndianStandards. Attention is drawn especially to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should beread as ‘Indian Standard’.

b) Comma ( , ) has been used as a decimal marker while in Indian Standards, the current practiceis to use a point ( . ) as the decimal marker.

In this adopted standard, reference appears to certain International Standards for which Indian Standardsalso exist. The corresponding Indian Standards, which are to be substituted in their places, are listedbelow along with their degree of equivalence for the editions indicated:

International Standard

ISO 3269 : 19881) Fasteners —Acceptance inspection

ISO 3506-1 : 1997 Corrosion-resistant stainless-steelfasteners — P-art 1 : Bolts, screwsand studs

ISO 4042 : 19892) Threadedcomponents — Electroplatedcoatings

Corresponding Indian Standard Degree of Equivalence

IS 1367 ( Part 17 ) :2005 Technical Identicalsupply conditions for threaded steelfasteners: Part 17 Inspection,sampling and acceptance procedure( fourfh revision)

I.S 1367 ( Part 14/See 1 ) :2002Technical supply conditions forthreaded steel fasteners: Part 14Mechanical properties of corrosi,on-resistant stainless-steel fasteners,Section 1 Bolts, screws and studs( third revision)

IS 1367 ( Part 11 ) :2002 Technicalsupply conditions for threaded steelfasteners: Part 11 Electroplatedcoatings ( third revision )

do

do

1) Since revised in 2000.2, Since revised in 1999.

( Continued on third cover)

IS 12952:2005

ISO 8740:1997

Indian Standard

GROOVED PINS — FULL-LENGTH PARALLELGROOVED, WITH CHAMFER

( First Revision)

1 scope

This International Standard specifies the characteristics of full-length parallel grooved pins made of steel oraustenitic stainless steel with chamfer which have three equally spaced grooves impressed longitudinally ontheir exterior surface and a pilot to facilitate insertion, with nominal diameter, d,, from 1,5 mm to 25 mm inclu-sive.

The displaced rrraterial-to each side of the grooves forming an expanded diameter ~ which is larger than thenominal diameter d, will cause a non-positive locking fit when these grooved pins are forced into a drilled hole

+qual to the nominal diameter d, (see clause 4).

2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of thisInternational Standard. At the time of publication, the editions in~ated were valid. All standards are subjectto revision, and-parties to agreements based on this International Standard are encouraged to investigate thepossibility of applying the most recent editions of the standards inbici%d below. Members of IEC and ISOmaintain registers of currently valid International Standar-ds.

ISO 3269:1988, Fasteners - Acceptance inspection.

ISO 3506-1:1997, Corrosion-resistant stainless steel fasteners - Part 1: Bolts, screws and studs.

ISO 4042:–’), Fasteners - E/ectrop/ated coatings.

ISO 8749:1986, Pins and grooved pins - Shear test.

ISO 9717:1990, Phosphate conwrsion coatings for metals - Method of speci~ing requirements.

3 Dimensions

See figure 1 and table 1.

1)

2)

3)

c1

1)

/-6 .

&

! C2 - - - a

1P

Chamfer permissible

a=15”t030”

The grooving angle 70° applies only to grooved pins made from steel as shown in clause 5. The groovingangle may be modified depending on resilience of material.

Figure 1

1) To be published. (Revision of ISO 4042:1989)

IS 12952:2005

ISO 8740: 1997

Table 1 — DimensionsDimensions in millimetres

1,5 2 2,5 3

h9

B

D,12 0,18 0,25 0,3

0,6 0,8 1 1,2

0,2 0,25 0,3 0,4

1,6 2,84 4,4 6,4

4 5 6 8 10 12 16 20 I 25

hll

t non-

to

0,4 I 0,5 I 0,6 I 0,8 I 1 I 1,2 1,6 [ 2 I 2,5

7%4,6 6 7,5

2 2,5 3

181 283 444linimum shear.rength, double’)N

121

Expanded diameter, d,’”4’

om. min. I max. 10,05+0,05o

i

*o.1

-

5,25

6,3

2,65

3,2

I

4,25

10 I 9,751 10,2

8,3

1,6

16 15,5 16,

12,3!

4-+=

20,5

22 21,5 22

16,4

+-+4-+28 27,5 28

30 I 29,51 30

35 I 34,51 35

-t-t-

40 39,5 40

45 44,5 45

50 49,5 50

10,35

55 54,25 55,; 25,5

w--t-65 64,25 65,

70 I 69,251 70,

80 79,25 80,

*“95 94,25 95,

1) Applies only to grooved pins made from steel as shown in clause 5,

2) The range of commercial lengths is between the stepped”lines.

3) The expended diameter, d,, applies only to pins made from steel as shown in clause 5. For other materials, folexample stainless steel, a reduction amount -shall he subtracted from the given values and should be agreecbetween customer and supplier.

4) For testing d,, a GO/NO GO ring gauge should be used.

2

4 Application

The diameter of the

IS 12952:2005

ISO 8740: 1997

hole into which the groove pin is to be inserted shall be equal to the nominal diameter d,of the mating pin and to tolerance class HI 1.

5 Requirements and reference International Standards

See table 2.

Table 2 — Requirements and reference International Standards

Steel (St) Austenitic stainless steel

Material’) Hardness 125 HV30 to 245 HV30 Al in accordance with ISO 3506-1,hardness 210 HV30 to 280 I+V30

Grooves Form of groove at the discretion of the supplier

Plain, i,e. pins to be supplied in natural finishtreated with a -protective lubricant, unlessotherwise specified by agreement betweencustomer and supplier.

Preferred coatings are black oxide, phosphate

Surface “finish coating or zinc plating with chromate conver- Plain, i.e. pins to be supplied in

sion coating (see ISO 9717 and ISO 4042). natural finish.

Other coatings as agreed between customerand supplier.

.All tolerances shall apply prior to the appli-cation of a plating or coating.

Workmanship Pins shall be free of irregularities or detrimental defects.

The test shall be in-accordance withShear strength test ISO 8749.

Acceptability The acceptance procedure is covered in ISO 3269.

1) Other materials as agreed between customer and supplier.

6 Designation

EXAMPLE 1A full-length parallel grooved steel pin with chamfer with nominal diameter d, = 6 mm and nominal length1= 50 mm is designated as follows:

Grooved pin ISO 8740-6x 50- St

EXAMPLE 2A full-length parallel grooved austenitic stainless steel pin of grade Al with chamfer, with nominal diameterd, = 6 mm and nominal length 1=50 mm is designated as follows:

Grooved pin ISO 8740-6 x 50- Al

3

IS 12952:2005

1s0 8740:1997

NATIONAL ANNEX A

( Nationa/ Foreword )

A-1 PACKAGING

Unless otherwise specified the packaging of Grooved pins shall be done in cartons or boxes inquantities of 100, 500 or 1000. Each carton shall have pins of one size only. The size and quantityshall be clearly indicated on the cartons or boxes.

A-2 MARKING

The cartons containing the pins shall be marked with size and indication of the source of manufacture.

A-3 BIS CERTIFICATION MARKING

Details available with the Bureau of Indian Standards.

“4

( Continued from second cover)

The concerned Technical Committee has reviewed the provisions of the following international Standardsreferred in this adopted standard and has decided that they are acceptable for use in conjunction withthis standard:

International Standard Title

ISO 8749:1986 Pins and grooved pins — Shear test

1s0 9717:-1990 Phosphate conversion coatings for metals — Method of specifying requirements

As decided by the Committee additional requirements of packaging, marking and BIS CertificationMarking are given in National Annex A. These additional requirements are part of this standard.

For the purpose of deciding whether a particular requirement of this standard is complied with, the finalvalue, observed or calculated, expressing the result of a test or analysis, shall be rounded off inaccordance with IS 2 : 1960 ‘Rules for rounding off numerical values.( revised )’. The number ofsignificant places retained in the rounded off value should be the same as that of the specified value inthis standard.

Bureau of Indian Standards

BIS is a statutory institution established urrderthe Bureau ofkrdian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification ofgoods and attending to connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications maybe reproduced in anyform without thepriorpermission in writing of BIS. This does not preclude the free use, inthecourseof implementing the standard, of necessary details, such as symbols and sizes, type or gradedesignations. Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards arealso reviewed periodically; a standard along with amendments is reaffirmed when such reviewindicates that no changes are needed; if the review indicates that changes are needed, it is takenup for revision. Users of Indian Standards should ascertain that.they are in possession of the latest ,,amendments or edition by referring to the latest issu-e of ‘BIS Catalogue’ and ‘Standards : MonthlyAdditions’.

This Indian Standard has been developed trom Doc : No. MGP/BP 33 ( 0416).

Amendments Issued Since publication

Amend No. Date of Issue Text Affected

BUREAU OF INDIAN STANDARDS

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