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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 5/16"-24 Thread Size, Plain - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 5/16"-24 Thread Size, Plain

The HELI-COIL Helical Insert is a tanged tang-style, free-running helical insert with a 5/16"-24 fine thread, right-hand orientation, and plain finish. Made from 18-8 stainless steel (metal), it offers a tensile…

SKU 3G-OTH-599194

Also listed as: A11915CN312 · A1191 5CN312

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, 5/16"-24 Thread Size, Plain
Category
Free-Running Tanged Helical Inserts
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Payment
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Technical Specifications

HELI-COIL
Manufacturer Part Number
A1191-5CN312
Type
Free-Running, Plain, 100 PK
Thread Size
5/16"-24

Technical Documents

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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Helical Insert is a tanged tang-style, free-running helical insert with a 5/16"-24 fine thread, right-hand orientation, and plain finish. Made from 18-8 stainless steel (metal), it offers a tensile strength of 200,000 to 250,000 psi and comes in a 100-piece pack (MPN A1191-5CN312). 3G Electric interprets this demand and delivers genuine industrial equipment across 14 departments — with specialist depth in combustion, pumps, and controls — ensuring you get the right solution, not just a catalog.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces tapped threads in metal. This free-running tanged tang style with 5/16"-24 fine thread restores strength in aluminum, cast iron, or steel components. 3G Electric supplies these inserts across 14 industrial departments, with specialist depth in combustion, pumps, and controls.

What are the specifications of the HELI-COIL A1191-5CN312?

The HELI-COIL A1191-5CN312 is a free-running tanged helical insert with 5/16"-24 fine thread, right-hand orientation, plain finish, and 18-8 stainless steel construction. Tensile strength is 200,000 to 250,000 psi. It comes in a 100-piece pack. 3G Electric sources this genuine HELI-COIL part for worldwide delivery.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies genuine HELI-COIL helical inserts worldwide. We interpret your demand, source the correct part like the A1191-5CN312, and handle logistics, customs, and delivery to your location. Contact us for availability and lead time on this 5/16"-24 free-running insert.

How to install a HELI-COIL tanged helical insert?

Install a HELI-COIL tanged insert by drilling out the damaged thread to the specified tap drill size, tapping with the HELI-COIL tap, then winding the insert onto the installation tool until it is below the surface. Break off the tang with a punch. 3G Electric provides genuine HELI-COIL inserts and can advise on tooling.

Used in

Common applications for HELI-COIL
Aerospace engine repair — HELI-COIL STI taps for M12x1.75 metric threads in aluminum alloy components
Automotive transmission rebuild — HELI-COIL STI taps for 7/16-14 UNC threads in cast iron housings
Industrial pump maintenance — HELI-COIL STI taps for #10-32 UNF threads in stainless steel pump bodies
Hydraulic cylinder repair — HELI-COIL STI taps for M6x1 metric threads in steel cylinder heads
General manufacturing — HELI-COIL STI taps for 9/16-18 UNF threads in machinery base plates

HELI-COIL Products

3G Electric supplies HELI-COIL free-running tanged helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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