Heli-coil A1185-3CN570 Free Running Insert 10-24 Unc

Product Description

The HELI-COIL A1185-3CN570 is a free running wire thread insert designed to create or restore strong, wear-resistant internal threads in a tapped hole. At 0.57 inches overall length with a 10-24 UNC thread profile and a 3D length-to-diameter ratio, this insert is suited for applications where fastener pullout strength and thread integrity are critical. Constructed from 304 stainless steel with a bright, uncoated finish, it resists corrosion and holds up in harsh service environments. The tanged design allows installation with a standard HELI-COIL insertion tool. Licensed trades and maintenance professionals rely on this insert type to repair stripped threads or reinforce threads in softer base materials without replacing the entire component.

This insert is used in production and MRO (maintenance, repair, and operations) applications across industrial, mechanical, and electrical trade environments. The 10-24 UNC thread size makes it common in enclosures, light fixtures, equipment frames, and general mechanical assemblies where fine thread control and corrosion resistance are required. It is sold as a single insert. The minimum order quantity is 10 units, so procurement should be planned accordingly for shop stock or job-site use.

Key Features

• 10-24 UNC thread size for compatibility with standard unified coarse fasteners
• 0.57 inch overall length at a 3D length-to-diameter ratio for solid thread engagement
• 304 stainless steel construction resists corrosion in demanding service conditions
• Tanged design works with standard HELI-COIL insertion tools for repeatable installs
• Bright, uncoated finish - no added coating to affect dimensional tolerance
• 11-3/8 free coils provide consistent thread load distribution across the insert length

Compatibility

Designed as an OEM-style threaded repair insert for any application requiring a 10-24 UNC internal thread in metal or other structural base materials where thread strength reinforcement is needed.

Installation Notes

Installation is typically performed by a machinist, maintenance technician, or licensed trades professional. The parent material must be drilled and tapped with the correct HELI-COIL tap size for 10-24 UNC before the insert is driven with an appropriate insertion tool. Always remove all chips and debris from the tapped hole before installation. After seating the insert flush or slightly below the surface, break off the installation tang using a tang break-off tool per standard wire insert procedure.