Heli-coil R513-10 Free Running Insert M14 X 1.25 6-pack

Product Description

The HELI-COIL R513-10 is a tanged, free running threaded insert engineered to restore or reinforce M14 x 1.25 metric fine threads in parent material that has been stripped, damaged, or requires a stronger thread form. Constructed from stainless steel, this insert provides corrosion resistance and long-term thread integrity in both ferrous and non-ferrous base materials. At 0.75 inches in overall length, the R513-10 installs flush into a prepared tapped hole using a standard Heli-Coil installation tool. Machinists, maintenance technicians, and field service professionals use these inserts across automotive, industrial, and mechanical maintenance applications where metric fine thread repair is required.

This insert is suited for metric fine thread repair and installation in a range of materials including aluminum, cast iron, and steel. The free running design allows normal bolt or stud engagement without locking friction, making it appropriate for applications requiring routine disassembly and reassembly. Each package contains 6 inserts, supporting multiple repairs from a single purchase. Typical use cases include cylinder head thread repair, equipment housing thread restoration, and precision assembly work where metric fine thread tolerance must be maintained.

Key Features

• M14 x 1.25 metric fine thread size for precise thread restoration
• Stainless steel construction provides corrosion resistance in harsh service environments
• Tanged design aids installation and is compatible with standard Heli-Coil installation tooling
• 0.75 inch overall insert length for adequate thread engagement depth
• Free running configuration allows smooth bolt engagement and routine disassembly
• 6 inserts per package supports multiple repair jobs

Compatibility

Designed as an OEM-style thread repair solution for any application requiring an M14 x 1.25 metric fine threaded insert in a prepared tapped hole using standard Heli-Coil tooling.

Installation Notes

Installation requires drilling the damaged hole to the correct Heli-Coil tap drill size, tapping with the appropriate M14 x 1.25 Heli-Coil tap, and driving the insert using the correct installation tool for this thread size. After installation, the drive tang should be broken off using a tang break-off tool where required by the application. Follow the fastener manufacturer installation guidelines and applicable shop standards for thread repair procedures.