Heli-coil 535-10 Thread Insert Hand Installation Tool 5/8-18

Product Description

The HELI-COIL 535-10 is a hand installation tool designed for inserting threaded wire inserts into pre-drilled and tapped holes. It is a Type IV Non-Captive Prewinder style tool, which means the tool prewinds the insert before driving it into the parent material. The spinner diameter measures 1.125 inches and the prewinder length is 2.875 inches. This tool is used by machinists, maintenance technicians, and trade professionals who repair or strengthen threads in metal, composite, or other materials. It requires no power source and is operated entirely by hand.

This tool is suited for repair and production applications where 5/8-18 UNF threaded inserts must be installed accurately and efficiently. It is commonly used in manufacturing maintenance, field repair work, and shop environments. The hand-drive format makes it appropriate for situations where controlled torque and placement precision are required, such as restoring stripped threads in engine components, housings, or structural fastener locations.

Key Features

• Prewinder design automatically winds the insert onto the mandrel before installation
• Type IV Non-Captive configuration for use with standard free-running and locking inserts
• Compatible with both free-running and locking insert types
• Minimum thread size of 5/8-18 UNF
• Spinner diameter of 1.125 inches for controlled hand operation
• Prewinder length of 2.875 inches for standard-depth installation applications

Compatibility

Designed for use with 5/8-18 UNF free-running and locking threaded wire inserts. Consult HELI-COIL insert series documentation to confirm insert-to-tool compatibility before use.

Installation Notes

This tool is installed by hand and does not require power tools or pneumatic equipment. Before use, ensure the parent hole has been drilled and tapped to the correct HELI-COIL specification for the 5/8-18 UNF insert size. Keep the tool aligned axially with the hole during installation to avoid cross-threading or insert distortion. Follow the insert manufacturer instructions for tang break-off procedures after the insert is seated.