HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-20 Thread Size, Plain
The HELI-COIL Helical Insert is a free-running, tanged tang style insert with a 1/4"-20 thread size, coarse, right-hand orientation, and a tensile strength of 200,000 to 250,000 psi. Made from 18-8 stainless steel…
SKU 3G-OTH-598911
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Product Description
The HELI-COIL Helical Insert is a free-running, tanged tang style insert with a 1/4"-20 thread size, coarse, right-hand orientation, and a tensile strength of 200,000 to 250,000 psi. Made from 18-8 stainless steel, this plain, inch-series insert comes in a 100-piece pack (MPN A1185-4CN375). 3G Electric interprets customer demand and delivers genuine industrial equipment across 14 departments — and far more — with specialist depth in combustion, pumps and controls as an authorised distributor for brands like FBR, Interpump, Riello, Beckett, Schneider, ABB, Siemens, SKF, Festo, and Fluke.
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces threads in metal. This free-running, tanged tang style insert with 1/4"-20 thread size restores stripped threads in automotive, aerospace, and industrial assemblies. 3G Electric supplies genuine HELI-COIL inserts across 14 industrial departments worldwide.
What are the specifications of the HELI-COIL A1185-4CN375 insert?
This HELI-COIL insert has a 1/4"-20 coarse thread, right-hand orientation, and tensile strength of 200,000 to 250,000 psi. It is made from 18-8 stainless steel, plain finish, inch-series, and comes in a 100-piece pack (MPN A1185-4CN375). 3G Electric sources this genuine insert for global delivery.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies genuine HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance for delivery to any location. Contact us to order the A1185-4CN375 1/4"-20 insert or other HELI-COIL sizes for your application.
How to install a tanged HELI-COIL insert?
To install a tanged HELI-COIL insert, drill out the damaged thread to the specified tap drill size, tap the hole with the correct HELI-COIL tap, then use a tang break-off tool to insert the coil. After installation, break off the tang with a punch. 3G Electric provides genuine inserts and can advise on proper tooling.
Used in
Common applications for HELI-COILHELI-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.









