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 thread size, right-hand orientation, and fine thread pitch. Made from 18-8 metal, it offers a tensile strength of 200,000 to…
SKU 3G-OTH-598921
Need installation or engineering help?
Ask a question
Product Description
The HELI-COIL Helical Insert is a free-running, tanged tang style insert with a 1/4"-28 thread size, right-hand orientation, and fine thread pitch. Made from 18-8 metal, it offers a tensile strength of 200,000 to 250,000 psi and comes in a plain finish, packaged as 1,000 pieces (MPN 1191-4CN375S).
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is a HELI-COIL helical insert used for?
A HELI-COIL helical insert repairs or reinforces tapped threads in metal, preventing stripping in soft materials like aluminum. It is ideal for automotive, aerospace, and industrial maintenance where a strong, reusable 1/4"-28 fine thread is needed.
What are the specifications of the HELI-COIL 1191-4CN375S insert?
This HELI-COIL insert is free-running, tanged tang style, with a 1/4"-28 fine thread, right-hand orientation, and plain finish. It is made from 18-8 metal with tensile strength of 200,000 to 250,000 psi, supplied in a 1,000-piece pack.
Where to buy HELI-COIL helical inserts worldwide?
3G Electric supplies HELI-COIL helical inserts worldwide, handling full logistics and customs clearance. We source genuine industrial parts across 14 departments, including fasteners and thread repair, and deliver to global destinations without requiring local warehousing.
How to install a tanged HELI-COIL insert?
To install a tanged HELI-COIL insert, drill 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, remove 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.
