Heli-coil 3585-2CN246S Screw-locking Insert 8-32 Unc

Product Description

The HELI-COIL 3585-2CN246S is a screw-locking helical wire thread insert designed to create a strong, vibration-resistant threaded connection in tapped holes. Manufactured from Grade 304 stainless steel, this insert provides corrosion resistance suitable for demanding industrial and mechanical applications. The insert measures 0.246 inches overall length, corresponds to an 8-32 UNC thread size, and carries a 1-1/2D length-to-diameter ratio. It features a tanged design for installation with a standard HELI-COIL insertion tool. Locking torque reaches a maximum of 9 inch-pounds, with a minimum breakaway torque of 1.50 inch-pounds, ensuring positive thread retention under load and vibration.

This insert is used wherever a reliable locking thread repair or thread reinforcement is needed in parent materials that are prone to wear, stripping, or vibration-induced loosening. Common installation scenarios include mechanical assemblies, electronics enclosures, aerospace components, and general industrial equipment requiring 8-32 UNC threaded connections. The Grade 304 stainless steel construction makes it well suited for environments where corrosion resistance is a priority. It is installed by licensed mechanics, maintenance technicians, and assembly professionals working across a broad range of industries. This part is sold in a package quantity of 1,000 inserts.

Key Features

• Grade 304 stainless steel construction for corrosion resistance
• 8-32 UNC thread size with 1-1/2D length-to-diameter ratio
• 0.246 inch overall length for compact thread reinforcement
• Tanged design for use with standard HELI-COIL insertion tooling
• Maximum locking torque of 9 inch-pounds for vibration-resistant retention
• Minimum breakaway torque of 1.50 inch-pounds ensures controlled disassembly

Compatibility

Designed as a screw-locking thread insert for tapped holes with an 8-32 UNC thread form, compatible with standard HELI-COIL insertion tools sized for this thread series.

Installation Notes

Installation is performed using the appropriate HELI-COIL mandrel-style insertion tool matched to the 8-32 UNC thread size. The parent material must be drilled and tapped with the correct HELI-COIL oversize tap before insert installation. After seating the insert, remove the tang using a tang break-off tool where required by the application. Ensure the installation area is free of debris and the insert is fully seated flush with or below the parent material surface before assembly.