HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 7/16"-14 Thread Size, Plain
The HELI-COIL Helical Insert is a tanged tang style, free-running insert with a 7/16"-14 thread size, plain finish, and right-hand orientation. Made from 18-8 metal, it offers a tensile strength range of 200,000 to…
SKU 3G-OTH-598940
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Product Description
The HELI-COIL Helical Insert is a tanged tang style, free-running insert with a 7/16"-14 thread size, plain finish, and right-hand orientation. Made from 18-8 metal, it offers a tensile strength range of 200,000 to 250,000 psi and comes in a 100-piece pack (MPN A1185-7CN438).
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces tapped threads in metal. It provides a durable, free-running thread for fasteners, commonly used in automotive, aerospace, and industrial maintenance applications where stripped or worn threads need restoration.
What are the specifications of the HELI-COIL A1185-7CN438 insert?
This HELI-COIL insert has a 7/16"-14 thread size, coarse right-hand orientation, and plain finish. It is made from 18-8 metal with a tensile strength of 200,000 to 250,000 psi. The pack contains 100 pieces, tanged tang style, free-running type.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle logistics, customs, and delivery to your location. Contact us to order the A1185-7CN438 or other HELI-COIL thread repair inserts for your application.
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 correct HELI-COIL tap, then winding the insert onto the installation tool and driving it into the tapped hole. Break off the tang after installation for a permanent thread.
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.









