Heli-coil 3747-6 Thread Insert Tool M6 X 1.00

Product Description

The HELI-COIL 3747-6 is a hand installation tool designed specifically for inserting M6 x 1.00 metric coarse thread inserts into pre-drilled and tapped holes. The tool engages the tang of the coil insert and winds it into the threaded hole with controlled torque, seating the insert flush or below the surface as required. It is used in repair and original assembly applications across automotive, industrial, and mechanical trades. Mechanics, machinists, and maintenance technicians rely on this tool to install HELI-COIL inserts accurately without damaging the insert or the parent material.

This tool is matched to the M6 x 1.00 thread size, making it the correct driver for any M6 x 1.00 HELI-COIL insert installation job. It is suited for hand-driven use in low-volume repair work, field service, and bench assembly where a power driver is not needed or not appropriate. Common applications include restoring stripped threads in aluminum engine components, machinery housings, and structural assemblies requiring a durable threaded connection.

Key Features

• Matched to M6 x 1.00 metric coarse thread inserts for precise, consistent installation
• Hand-driven design allows controlled torque application without power tools
• Engages insert tang directly, reducing the risk of cross-threading or insert distortion
• Compact hand tool format suits field repair and bench work equally
• Metric coarse thread standard ensures compatibility with standard M6 x 1.00 coil inserts

Compatibility

Designed for use with M6 x 1.00 metric coarse thread wire inserts. Verify insert series and tang-break requirements before selecting this tool for a specific insert product line.

Installation Notes

The parent material must be drilled and tapped to the correct HELI-COIL tap size for M6 x 1.00 before the insert is installed. Engage the installation tool with the insert tang before positioning in the hole, then wind the insert in until it is seated at the correct depth. After installation, use a tang break-off tool to remove the drive tang if a tang-free insert finish is required. No power source is needed for this hand tool.