Heli-coil A1185-10CN625 5/8-11 Unc Threaded Insert

Product Description

The HELI-COIL A1185-10CN625 is a free-running, tanged wire thread insert designed to create or restore durable internal threads in parent material. Manufactured from 304 stainless steel with a bright, uncoated finish, this insert accepts a 5/8-11 UNC thread and measures 0.625 inches in overall length, corresponding to a 1D length-to-diameter ratio. The coiled wire design distributes load across multiple thread convolutions, reinforcing stripped or soft-material bores to full thread strength. Machinists, maintenance technicians, and MRO professionals install this type of insert as a precision thread repair or pre-installation solution.

This insert is suited for thread repair and thread reinforcement applications in metal, aluminum, cast iron, and other materials where a 5/8-11 UNC internal thread is required. The tanged design allows installation with a standard HELI-COIL drive tool; the installation tang is broken off after seating. With 5-1/4 free coils, it provides solid thread engagement across the full insert length. Typical applications include industrial equipment maintenance, automotive, aerospace, and general manufacturing repair.

Key Features

• 5/8-11 UNC thread size for standard fractional thread repair and reinforcement
• 0.625-inch overall length with 1D length-to-diameter ratio for compact installation
• 304 stainless steel construction offers corrosion resistance in demanding environments
• Tanged design for positive drive tool engagement during installation
• 5-1/4 free coils provide full-length thread engagement
• Bright, uncoated finish - no coating interference with thread tolerance

Compatibility

Designed as an OEM-style free-running threaded insert for use wherever a 5/8-11 UNC internal thread must be installed or restored in a pre-drilled and tapped parent bore sized for this insert series.

Installation Notes

Installation requires a correctly sized HELI-COIL tap to prepare the parent bore and a compatible drive tool sized for the 5/8-11 insert series. Power down or de-energize any equipment before drilling or tapping operations begin. After driving the insert to the proper depth, break off the tang using a tang break-off tool or punch; do not leave the tang in a blind hole without removal. Follow applicable shop or facility standards for thread repair procedures to ensure proper torque loading on the finished assembly.