HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-28 Thread Size, Plain
The HELI-COIL Helical Insert is a free-running, tanged tang style insert with a 1/4"-28 fine, right-hand thread. Made from 18-8 metal, it offers a tensile strength range of 200,000 to 250,000 psi and comes in a plain…
SKU 3G-OTH-599237
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Product Description
The HELI-COIL Helical Insert is a free-running, tanged tang style insert with a 1/4"-28 fine, right-hand thread. 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 1,000 pieces (MPN 1191-4CN250S).
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 insert with 1/4"-28 fine thread restores strength in aluminum, cast iron, or steel components across machining, automotive, and industrial maintenance applications.
What are the specifications of the HELI-COIL 1191-4CN250S insert?
This HELI-COIL insert has a 1/4"-28 fine, right-hand thread, made from 18-8 metal with a tensile strength of 200,000 to 250,000 psi. It is plain finish, inch-sized, and packaged as 1,000 pieces. The tanged tang style allows easy installation and removal.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order the 1191-4CN250S or other thread repair inserts for your application.
How to install a HELI-COIL tanged tang 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-style installation tool to wind the insert into place. After installation, break off the tang with a punch. Always follow the manufacturer's instructions for torque and depth.
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.
