Heli-coil R514-6 M18 X 1.5 Threaded Insert Stainless 6pk

Product Description

The HELI-COIL R514-6 is a free running threaded insert designed to repair or reinforce M18 x 1.5 metric fine threads in parent material that has been stripped, damaged, or requires added durability. The insert is manufactured from stainless steel and measures 0.5 inches in overall length. The tanged design allows installation with a standard Heli-Coil installation tool, which engages the drive tang to wind the coil into the prepared hole. This package contains 6 inserts. Machinists, maintenance technicians, and field mechanics install these inserts in metal components across industrial, automotive, and equipment repair applications.

Free running inserts are used when a standard thread fit is required without locking friction. They are commonly installed in aluminum, cast iron, magnesium, and other materials where the parent thread is too soft or too worn to hold a fastener reliably. The M18 x 1.5 metric fine thread standard makes this insert appropriate for precision fastening applications in automotive engines, heavy equipment, and industrial machinery where thread pitch accuracy is critical.

Key Features

• M18 x 1.5 metric fine thread size for precision thread repair and reinforcement
• Stainless steel construction provides corrosion resistance in demanding environments
• Tanged design for use with standard Heli-Coil installation tooling
• 0.5 inch overall insert length for consistent thread engagement depth
• Free running coil allows standard fastener installation without additional locking torque
• Package of 6 inserts for multi-repair jobs or recurring maintenance needs

Compatibility

Designed as an OEM-style thread repair insert for any application requiring an M18 x 1.5 metric fine threaded hole in a variety of parent materials including aluminum, cast iron, and steel.

Installation Notes

Installation requires drilling the damaged hole to the correct Heli-Coil tap drill size, tapping with the appropriate M18 x 1.5 STI tap, and winding the insert using a proper installation tool. After installation, the drive tang is broken off at the notch using a tang break-off tool. Always follow the thread insert manufacturer's installation sequence and verify hole depth before tapping to avoid breakthrough in blind-hole applications.