Heli-coil 3695-6 Tang Break Off Tool 3/8-16 Unc

Product Description

The HELI-COIL 3695-6 is a tang break off tool designed for use with 3/8-16 UNC thread inserts. After a HELI-COIL wire thread insert is installed into a tapped hole, the installation tang must be snapped off cleanly to complete the repair. This tool applies the precise downward force needed to break the tang at the notch without damaging the insert or the parent material. It is a standard step in any HELI-COIL thread repair or thread-locking procedure on 3/8-16 UNC fastener locations. Machinists, mechanics, and maintenance technicians working on aluminum, cast iron, or soft-metal components use this tool as part of the standard HELI-COIL installation sequence.

This tang break off tool is sized specifically for 3/8-16 Unified National Coarse thread inserts. It is used across a wide range of service environments including automotive engine repair, industrial machinery maintenance, aerospace component servicing, and general metalworking. Any application requiring a thread repair or thread upgrade using a 3/8-16 UNC HELI-COIL insert will require a dedicated tang break off tool to finish the installation correctly.

Key Features

• Matched to 3/8-16 UNC thread insert size for proper tang engagement and break-off
• Designed for use in the standard HELI-COIL wire thread insert installation sequence
• Applies controlled force at the tang notch to prevent insert or bore damage
• Compatible with UNC thread standard inserts per the 3/8-16 specification
• Single-use per installation step - one tool per thread size for consistent results

Compatibility

Designed for use with 3/8-16 UNC HELI-COIL wire thread inserts as part of the standard tang-style insert installation process.

Installation Notes

This tool is used by machinists, mechanics, and maintenance professionals as the final step after driving a tang-style thread insert. Always ensure the insert is fully seated to the correct depth before breaking off the tang. Insert the tool into the installed insert and apply a sharp downward strike or press to snap the tang at the notch. Follow the insert manufacturer's installation instructions and observe standard shop safety practices when working with hand tools and threaded fasteners.