HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-20 Thread Size, Plain
The HELI-COIL Helical Insert is a tanged tang-style, free-running insert with a 1/4"-20 thread size, right-hand orientation, and coarse thread pitch. Made from 18-8 metal, it offers a tensile strength range of…
SKU 3G-OTH-598908
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Product Description
The HELI-COIL Helical Insert is a tanged tang-style, free-running insert with a 1/4"-20 thread size, right-hand orientation, and coarse thread pitch. Made from 18-8 metal, it offers a tensile strength range of 200,000 to 250,000 psi and comes in a plain finish, packaged as a 100-piece set (MPN A1185-4CN250).
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces threads in metal components, providing a durable 18-8 stainless steel thread with 200,000 to 250,000 psi tensile strength. It is commonly used in automotive, aerospace, and industrial maintenance to restore stripped threads without replacing the parent part.
What are the specifications of the HELI-COIL A1185-4CN250 insert?
The HELI-COIL A1185-4CN250 is a free-running, tanged tang-style insert with a 1/4\"-20 thread size, right-hand orientation, and coarse pitch. It is made from 18-8 metal, has a plain finish, and comes in a 100-piece pack with a tensile strength of 200,000 to 250,000 psi.
Where to buy HELI-COIL helical inserts in worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner, we provide genuine HELI-COIL products like the A1185-4CN250 to industrial buyers, ensuring compliance with international shipping requirements.
How to install a HELI-COIL tanged helical insert?
To install a HELI-COIL tanged insert, drill out the damaged thread to the specified tap drill size, tap the hole with the correct HELI-COIL tap, then wind the insert into the hole using a tang installation tool. After installation, break off the tang with a punch for a permanent thread repair.
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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.









