Heli-coil A3585-2CN164 Screw-locking Insert 8-32 Unc

Product Description

The HELI-COIL A3585-2CN164 is a tangless screw-locking helical thread insert designed to create strong, vibration-resistant threads in tapped holes. Manufactured from Grade 304 stainless steel with a bright finish, this insert provides corrosion resistance in demanding service environments. The 8-32 UNC thread size and 1D length ratio (0.164 inches overall length) make it a compact solution for restoring or reinforcing threaded connections in metal components. A maximum locking torque of 9 in-lb and a minimum breakaway torque of 1.50 in-lb keep fasteners secure under vibration and dynamic loading. Licensed machinists, maintenance technicians, and assembly professionals install these inserts in production and repair applications.

This insert is suited for use in aerospace, electronics, industrial equipment, and general manufacturing applications where reliable thread locking is required. The tangless design eliminates the need for tang removal after installation, streamlining the assembly process and reducing the risk of loose tang fragments in sensitive components. It is commonly installed in aluminum, magnesium, cast iron, and other base materials where parent thread strength is insufficient for the load requirements.

Key Features

• Grade 304 stainless steel construction for corrosion resistance in harsh environments
• Tangless design eliminates post-installation tang removal step
• 8-32 UNC thread size with 1D length-to-diameter ratio
• Maximum locking torque of 9 in-lb for vibration-resistant fastening
• Minimum breakaway torque of 1.50 in-lb ensures controlled removal when needed
• Bright finish with minimum OD of 0.205 inches and maximum OD of 0.220 inches

Compatibility

Designed as an OEM-style thread repair and reinforcement insert for tapped holes requiring 8-32 UNC threading in metal base materials.

Installation Notes

Installation requires a HELI-COIL or compatible tangless insert installation tool matched to the 8-32 UNC thread size. The parent material must be tapped with the correct STI (Screw Thread Insert) tap before insert installation. Power down or de-energize any equipment before performing thread repair on live assemblies. Follow applicable manufacturer torque and installation depth specifications for the base material being serviced.