Heli-coil 2299-5 Thread Insert Tool 5/16-24 Unf

Product Description

The HELI-COIL 2299-5 is a hand installation tool designed specifically for driving threaded wire inserts into pre-tapped holes. It accepts 5/16-24 UNF thread inserts and applies the correct torque path to seat the insert flush without damaging the host material or the insert coil. Machinists, maintenance technicians, and field service pros use this tool when restoring or reinforcing internal threads in aluminum, cast iron, steel, and other substrates. It pairs with the corresponding HELI-COIL insert series for that thread size and pitch.

This tool is used in applications where threaded wire inserts are being installed by hand rather than with a power driver - common in tight-access locations, field repair situations, or wherever a controlled, manual installation is required. Typical applications include thread repair on HVAC equipment housings, pump bodies, compressor mounting surfaces, and other mechanical assemblies where a 5/16-24 UNF thread specification is called out. The tool is appropriate for both shop and field use.

Key Features

• Designed for 5/16-24 UNF thread insert installation
• Hand tool format allows controlled, torque-sensitive installation without power equipment
• Drives wire thread inserts to correct seating depth
• Compatible with HELI-COIL insert series matching the 5/16-24 UNF specification
• Suitable for shop bench work and field repair environments

Compatibility

Designed for use with HELI-COIL threaded wire inserts in the 5/16-24 UNF thread size. Confirm insert series compatibility before use.

Installation Notes

Installation is performed by a machinist or qualified technician after the host material has been drilled and tapped to the correct HELI-COIL tap size for the 5/16-24 thread. Power down or de-energize any equipment being serviced before beginning thread repair work. Do not use this hand tool with a power driver - it is intended for manual operation only to prevent insert damage or cross-threading.