Why use Heli-Coil in Aerospace?dbroberts.d2pmagazine.com/pdfs/1117-HeliCoil.pdf · • Heli-Coil Wire Inserts allow the use of smaller bosses • Allow repairs in areas where no provision

Heli-Coil® Reference Guide #5

Why use Heli-Coil in Aerospace?

Heli-Coil Inserts Are Utilized In a Wide Varietyof Original Equipment and Repair Applications.

Here are some examples:

Design Flexibility• All Heli-Coil Wire Inserts are

available in 5 standard lengths• Inserts may be altered to fit

specialized applications by cutting or trimming coils

Minimize Space & Weight• Heli-Coil Wire Inserts allow the use

of smaller bosses• Allow repairs in areas where no

provision has been made for an insert

Eliminate Stress Increase Strength • Standard tapped holes carry most of the load on the first

2 or 3 threads• Heli-Coil Insert Assembly provides a dynamic load.

Each coil of the insert carries a portion of the load resulting in a stronger assembly

Standard AssemblyHeli-Coil Assembly

Inserts are available ...• In thread sizes up to 1-1/2 Inch and

M39 Metric• In a variety of pitch combinations• To accommodate the needs of today’s

Military, Aerospace, Automotive and Commercial Markets

CockpitEngines Tray Tables

Overhead Bins Skeletals (Air Frame) Seats

Interior Bathroom Cabins Guidance Systems Fuel Delivery (Fuel Pumps)

Heli-Coil also delivers solutions for avionics, armaments and space applications.

To request a quote, please email [email protected], or call us at 800-773-5388.

Heli-Coil® Reference Guide #5

Why use Heli-Coil in Aerospace?

Why use Heli-Coil PRIMER FREE® Inserts?

• Yellow/Green Stains on work surfaces

• Clogged Installation tools with hardened primer on them

• Containers of yellow/green paint like liquid

• Primer accrued on flats of inserts

Choose the Heli-Coil PRIMER FREE Solution and eliminate the need for costly primers and epoxies.

Primer can accrue in the space adjacent to the flats on the locking chords and adversely effect prevailing torque.

Typical Liquid Primer application process

PRIMER FREE• Contains no Hexavalent Chromium• Eliminates need for chromate primers• Provides added lubricity for easier installation• No additional hole preparation necessary• Ideal for aluminum & magnesium applications• Meets Aerospace Standards• RoHS Compliant

• Installation time is reduced significantly and total in-place cost is decreased dramatically• Increases installation productivity by effectively doubling installation rates• Increases installation tool life• Provides a more reliable final assembly

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Assemblies Tested (10) per ASTM B117-97

Corrosion Resistance Comparison

Slight PittingPittedClean400

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Primer-Free® IICoating

Liquid Primer

Primer-Free ll inserts have undergone extensive salt fog testing per ASTM B-117. After exposure, the samples were sectioned to expose the threaded insert for examination. When protecting against galvanic corrosion, Primer Free ll inserts did consistently meet or exceed the performance of insert assemblies containing liquid chromate primer.

Save money and time with PRIMER FREE in high production environments when quality installation matters.

PRIMER FREE is approved by many Aerospace OEMs

PRIMER FREE Coated Inserts

PRIMER FREE for Superior Corrosion Resistance

Tell Tale Signs of Liquid Primer User

Liquid Primer is Costly and Can Impact Quality Installation

Liquid Primer is ToxicToxicity: Recent studies have shown that not only is zinc chromate highly toxic, it is also a carcinogen.

PRIMER FREE for Installation Savings

HeliCoil_Sales_Cheat_2_public.indd 1 10.05.2017 07:41:22











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Corrosion Resistance• Our standard 304 Stainless Steel material is inherently corrosion

resistant• Alternate materials for specialized applications including Inconel

X-750, Phosphor Bronze, Gall-Resist Material, And Titanium

304 Stainless Steel» Standard, general purpose material» Ideal for original equipment applications, repair, and overhaul» Stocked in most sizes

Nitronic 60®

» Superb gall resistance» Compatible with stainless steel screws» Ideal for use in vacuum environments» Requires no additional coatings or plating» Particle free & Non-magnetic

Titanium» Superior strength-to-weight ratio» Corrosion resistant» Excellent low temperature stability

Phosphor Bronze» Ideal for salt water applications» Non-magnetic» Excellent electrical conductivity

Inconel X-750» Used in areas exposed to high temperatures» Typical uses: gas turbine engines, nuclear applications, well drilling» Non-magnetic

Inserts and Tooling comply with the following Standards











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NASM122076 thru NASM122275 Insert, corrosion resistant Helical Coil Coarse Thread (Inch Series)

NASM124651 thru NASM124850 Insert, corrosion resistant Helical Coil Fine Thread (Inch Series)

NASM21209 Insert, Screw Thread, Self Locking (Inch Series)

NASM33537 Insert, Standard Dimensions, Assembly (Inch Series)

NASM8846 Insert, Screw Thread, Helical Coil (Inch Series)

MA1565 Insert, Screw Thread, Helical Coil (Metric Series)

MA1567 Insert, Screw Thread, Helical Coil, Standard Dimensions, Assembly (Metric Series)

MA3279, 3280, 3281 Insert, Screw Thread, Helical Coil, Free Running (Metric Series)

MA3329, 3330, 3331 Insert, Screw thread, Helical Coil, Screw-Locking (Metric Series)

AS59158 Tools for inserting and extracting Helical Coil InsertsNAS1130 Inserts, Screw Thread, Helical Coil, Free Running and Screw-Locking (Inch Series)

NAS0276 Inserts, Screw Thread, Helical Coil, Free Running and Screw-Locking (Metric Series)

FED-STD-H28 Screw Thread Standards for Federal ServicesAS3094A; AS3094 thru AS3097AS1229B; AS3080 thru AS3083 Special Locking Torque Inserts

ASME B18.29.1 Insert, Screw Thread, Helical Coil (Inch Series)

ASME B18.29.2M-2005 Helical Coil Screw Thread Inserts, Free Running and Screw Locking (Metric Series) AGS3600-3699 Insert, Screw Thread, Screw-Locking, Helical Coil, Cadmium Plated (Inch Series)

AGS4677 Series Insert, Screw Thread, Screw-Locking, Helical Coil, Cadmium Plated (Metric Series)

AS6733 Inserts, Wire Thread, Unplated (UNF)

AS6734 Inserts, Wire Thread, Unplated (UNC)

AS8455 Inserts, Wire Thread, Cadmium Plated (UNF)

AS8456 Inserts, Wire Thread, Cadmium Plated (UNC)

To request a quote, please email [email protected], or call us at 800-773-5388.

Documents

Why use Heli-Coil in Aerospace?dbroberts.d2pmagazine.com/pdfs/1117-HeliCoil.pdf · • Heli-Coil Wire Inserts allow the use of smaller bosses • Allow repairs in areas where no provision