Heli-coil 7751-5 Thread Insert Installation Tool M5x0.80

Product Description

The HELI-COIL 7751-5 is a hand installation tool designed for installing thread inserts into M5 x 0.80 metric coarse threaded holes. It uses a Type II Prewinder design, which winds the coil insert onto the prewinder mandrel before driving it into the prepared tapped hole. This process controls insert placement and reduces the risk of damage during installation. The tool features a prewinder body diameter of 15/32 inch, a spinner diameter of 2-9/32 inches, and an overall prewinder length of 4-5/8 inches. It is intended for hand operation and is suited for maintenance, repair, and production environments where thread repair or thread reinforcement work is performed.

This tool is used wherever M5 x 0.80 metric coarse thread inserts are being installed - including automotive, aerospace, HVAC equipment, industrial machinery, and general manufacturing repair applications. It is appropriate for use in both shop and field service contexts. Technicians working on equipment with stripped or damaged metric threads will use this tool to drive coil-type thread inserts to proper depth and engagement without cross-threading or insert deformation.

Key Features

• Type II Prewinder design pre-winds insert before installation to prevent damage and ensure accurate placement
• Sized specifically for M5 x 0.80 metric coarse thread inserts
• Prewinder body diameter: 15/32 inch
• Spinner diameter: 2-9/32 inches for controlled hand torque application
• Prewinder length of 4-5/8 inches provides reach for recessed hole applications
• Hand-operated tool - no power source required

Compatibility

Designed for use with M5 x 0.80 metric coarse thread coil-type inserts. Compatible with standard thread insert installation processes requiring a Type II Prewinder hand tool for that thread size.

Installation Notes

Before installing a thread insert, ensure the base material has been drilled and tapped to the correct insert tap size for M5 x 0.80 metric coarse. Load the insert onto the prewinder mandrel before driving it into the hole. Apply steady, even hand pressure during installation to seat the insert to the correct depth. Do not use power drivers with this hand installation tool.