Heli-coil 4973-16 Insert Tool M16 X 1.50 Metric Fine

Product Description

The HELI-COIL 4973-16 is a hand installation tool designed for driving wire thread inserts into pre-tapped holes. It accepts M16 x 1.50 metric fine thread inserts and provides the controlled torque and alignment needed to seat inserts correctly without cross-threading or over-driving. The tool is used by machinists, maintenance technicians, and field service pros working on threaded repair applications in metal components. It is part of the HELI-COIL system, which is the industry-standard approach for restoring or reinforcing internal threads in aluminum, cast iron, steel, and similar materials.

This tool is suited for repair and manufacturing applications where M16 x 1.50 metric fine thread inserts must be installed by hand. Typical use cases include engine component repair, heavy equipment maintenance, and industrial assembly work where power tools are not practical or where precise manual control is required. It is appropriate for both shop and field use.

Key Features

• Designed for M16 x 1.50 metric fine thread inserts
• Hand-operated installation tool for controlled insert seating
• Compatible with the HELI-COIL wire thread insert system
• Metric fine thread standard for precision fastening applications
• Single-piece package quantity suitable for individual tool purchase

Compatibility

Designed for use with HELI-COIL wire thread inserts sized M16 x 1.50 metric fine thread. Verify insert thread size and pitch before use to ensure proper tool-to-insert fit.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with thread insert procedures. Ensure the receiving hole has been properly drilled and tapped to the correct HELI-COIL specification before driving the insert. Do not use power tools with this hand installation tool. After insert installation, remove the tang with the appropriate tang break-off tool if required by the insert design.