Heli-coil 3747-5 Thread Insert Tool M5 X 0.80 Metric Coarse

Product Description

The HELI-COIL 3747-5 is a hand installation tool designed specifically for driving M5 x 0.80 metric coarse thread inserts into pre-tapped holes. The tool engages the tang of the helical wire insert and winds it into the threaded bore with controlled torque, ensuring proper seating depth and thread alignment. It is used in repair and original equipment manufacturing applications where damaged or weak threads need to be restored or reinforced. This tool is intended for hand operation and is suited for field service, assembly bench work, and maintenance applications across mechanical and industrial trades.

This installation tool is sized for M5 x 0.80 metric coarse thread inserts, making it appropriate for smaller fastener applications common in equipment repair, engine work, and precision assemblies. It is used wherever HELI-COIL or compatible wire thread inserts of the M5 x 0.80 specification are being installed. Typical use cases include restoring stripped threads in aluminum housings, cast components, and other base materials that require a durable threaded repair. The tool is intended for low-volume hand installation rather than high-cycle power tooling.

Key Features

• Sized for M5 x 0.80 metric coarse thread inserts
• Hand-operated installation tool for controlled insert driving
• Engages insert tang for accurate winding into tapped bore
• Suited for field repair, bench assembly, and OEM installation
• Metric coarse thread standard per UNSPSC Code 23291800

Compatibility

Designed for use with M5 x 0.80 metric coarse wire thread inserts in hand installation applications. Consult insert manufacturer documentation to confirm tool-to-insert compatibility before use.

Installation Notes

Install wire thread inserts only into holes that have been drilled and tapped to the correct HELI-COIL insert tap size for M5 x 0.80. Ensure the workpiece is secured before installation. After driving the insert to the correct depth, break off the installation tang using a tang break-off tool if a tang-free insert installation is required. Follow all applicable manufacturer guidelines and workplace safety procedures when performing thread repair work.