HELI-COIL Thread Repair Kit: Tanged Tang Style, Free-Running, 3/8"-16 Thread Size
The HELI-COIL Thread Repair Kit (MPN 5401-6) is a tanged tang style kit for free-running, stainless steel helical inserts. It includes a 3/8"-16 STI tap and inserts with an 18-8 material grade, right-hand coarse…
SKU 3G-OTH-527869
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Product Description
The HELI-COIL Thread Repair Kit (MPN 5401-6) is a tanged tang style kit for free-running, stainless steel helical inserts. It includes a 3/8"-16 STI tap and inserts with an 18-8 material grade, right-hand coarse thread, and plain finish, designed for metal substrates in inch-system applications.
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 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. Common applications include automotive, industrial machinery, and equipment maintenance where original threads have stripped or corroded.
What are the specifications of the HELI-COIL 5401-6 kit?
The HELI-COIL 5401-6 kit includes a 3/8"-16 STI tap and tanged tang style helical inserts. Inserts are 18-8 stainless steel, free-running, with right-hand coarse thread and plain finish. The kit is designed for inch-system metal substrates and is compatible with 3/8"-16 coarse threads.
Where to buy a HELI-COIL Thread Repair Kit worldwide?
3G Electric supplies the HELI-COIL 5401-6 Thread Repair Kit worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this kit or any HELI-COIL product for your maintenance 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 wind the insert into the tapped hole using the tang. Break off the tang after installation. Always follow the manufacturer's instructions for proper thread depth and torque.
Used in
Common applications for HELI-COILHELI-COIL Products
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.









