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HELI-COIL Thread Repair Kit: Tanged Tang Style - Insert & Tool Kits
HELI-COILInsert & Tool Kits

HELI-COIL Thread Repair Kit: Tanged Tang Style

The HELI-COIL Thread Repair Kit (MPN 5407-6) is a tanged tang style insert and tool kit for repairing damaged threads in metal. It includes free-running, 18-8 stainless steel helical inserts with a 3/8"-18 NPT…

SKU 3G-OTH-528069

Also listed as: 54076 · 5407 6

Brand
HELI-COIL
Item
Thread Repair Kit: Tanged Tang Style
Part Number
5407-6
Category
Insert & Tool Kits
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Technical Specifications

HELI-COIL
Manufacturer Part Number
5407-6
Type
Free-Running, Stainless Steel
Finish Type
Plain
Thread Size
3/8"-18
Thread Type
NPT
STI Tap Size
3/8"-18
Thread Direction
Right Hand
Compatible Material
Metal
Material Grade/Class
18-8
Insert Types Included
Helical Inserts
System of Measurement
Inch

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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Thread Repair Kit (MPN 5407-6) is a tanged tang style insert and tool kit for repairing damaged threads in metal. It includes free-running, 18-8 stainless steel helical inserts with a 3/8"-18 NPT right-hand thread size and an STI tap of the same size.

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, wear-resistant threads, extending the life of parts in automotive, industrial, and maintenance applications.

What are the specifications of the HELI-COIL 5407-6 thread repair kit?

The HELI-COIL 5407-6 kit includes free-running, tanged tang style helical inserts with a 3/8"-18 NPT right-hand thread size. It is made of 18-8 stainless steel, compatible with metal, and includes an STI tap of the same size. System of measurement is inch.

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 and customs clearance to deliver the 5407-6 kit and other thread repair products to your facility, wherever it is located.

How to install a HELI-COIL thread insert?

To install a HELI-COIL insert, drill out the damaged thread, tap the hole with the included STI tap, then use the tang-style installation tool to wind the insert into the new thread. Break off the tang after installation. Always follow the manufacturer's instructions for best results.

Used in

Common applications for HELI-COIL
Aerospace — Tangless screw-locking HELI-COIL inserts in 18-8 stainless steel for vibration-resistant threaded joints in airframe and engine components.
Automotive — Free-running tanged HELI-COIL inserts in metric sizes for repairing stripped threads in aluminum engine blocks and transmission housings.
Industrial machinery — STI taps and prewinder installation tools for on-site repair of threaded holes in cast iron and steel machine frames.
Oil and gas — Nitronic 60 HELI-COIL inserts for galling resistance in stainless steel valve bodies and pump housings exposed to corrosive media.
MRO and maintenance — HELI-COIL thread repair kits containing inserts, drill, tap, and installation tool for restoring damaged threads without replacing the parent component.
Electrical equipment — Screw-locking tangless HELI-COIL inserts for securing fasteners in metal enclosures and control panels subject to vibration.
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HELI-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.

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This kit includes helical inserts made from 18-8 stainless steel with a plain finish, designed for repairing damaged M18-2.50 coarse threads in metal components. The inserts have a 27 mm overall length and right-hand thread direction. Suitable for industrial maintenance and repair applications where thread restoration is required

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