Heli-coil 4238-8 Tang Break Off Tool M8 Thread Insert

Product Description

The HELI-COIL 4238-8 is a tang break off tool designed for use with M8 thread inserts during wire thread insert installation. After a helical wire insert is driven into a tapped hole, the installation tang must be snapped off cleanly to complete the repair or installation. This tool applies the controlled force needed to break the tang at the notch without damaging the insert or surrounding material. It is a standard item in any technician's thread repair kit and is used across automotive, industrial, and mechanical service applications.

This tool is compatible with M8 thread inserts in both metric coarse and metric fine thread standards. It is appropriate for use in any shop or field environment where wire thread inserts are installed into aluminum, cast iron, steel, or other base materials. Typical users include automotive technicians, machinists, and maintenance mechanics performing thread repair or thread reinforcement work.

Key Features

• Designed specifically for M8 tang break off after wire thread insert installation
• Compatible with both metric coarse and metric fine thread standards
• Provides controlled tang removal without insert distortion
• Purpose-built for use with helical wire thread insert systems
• Compact tool suitable for bench or field use

Compatibility

Designed for use with M8 metric coarse and metric fine helical wire thread inserts as part of a standard thread insert installation process.

Installation Notes

This tool is used by machinists, automotive technicians, and maintenance professionals after the thread insert has been fully driven into the tapped hole. Ensure the insert is fully seated before applying the tang break off tool. No power tools are required. Follow the thread insert manufacturer's installation sequence to avoid insert damage.