HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, #4-40 Thread Size
The HELI-COIL Thread Repair Kit (MPN 5401-04) is a tanged tang style kit for free-running, #4-40 thread size, coarse thread repairs in metal. It includes helical inserts made of 18-8 stainless steel with a plain…
SKU 3G-OTH-527852
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Product Description
The HELI-COIL Thread Repair Kit (MPN 5401-04) is a tanged tang style kit for free-running, #4-40 thread size, coarse thread repairs in metal. It includes helical inserts made of 18-8 stainless steel with a plain finish, right-hand thread direction, and an STI tap size of #4-40. This inch-system kit is designed for restoring damaged threads in metal components.
Frequently Asked Questions
What is a HELI-COIL Thread Repair Kit used for?
A HELI-COIL Thread Repair Kit restores damaged internal threads in metal components. It uses 18-8 stainless steel helical inserts to create strong, free-running threads. This kit is ideal for repairing #4-40 coarse threads in machinery, automotive, and industrial equipment, extending the life of parts without replacement.
What are the specifications of the HELI-COIL 5401-04 kit?
The HELI-COIL 5401-04 kit is a tanged tang style, free-running thread repair set for #4-40 coarse threads. It includes helical inserts made of 18-8 stainless steel with a plain finish, right-hand thread direction, and an STI tap size of #4-40. It is designed for metal substrates and uses the inch measurement system.
Where to buy HELI-COIL thread repair kits worldwide?
3G Electric supplies HELI-COIL thread repair kits worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to source the 5401-04 kit or other HELI-COIL products for your maintenance and repair needs.
How to install a HELI-COIL thread insert?
To install a HELI-COIL insert, drill out the damaged thread to the specified size, tap the hole using the included STI tap, then insert the helical coil using the tang-style installation tool. Break off the tang after insertion. Always follow the manufacturer's instructions for proper thread repair in metal components.
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3G Electric supplies HELI-COIL insert & tool kits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









