Heli-coil AT3585-2C164 Screw-locking Insert 8-32 Unc

Product Description

The HELI-COIL AT3585-2C164 is a screw-locking helical wire insert designed to create a strong, vibration-resistant threaded hole in parent materials that require reliable thread repair or reinforcement. Built from Grade 304 stainless steel with a bright finish, this tanged insert measures 0.164 inches in overall length with a 1D length-to-diameter ratio and an 8-32 UNC thread size. The coiled design provides a locking function through 3-1/2 free coils, resisting loosening under dynamic loads. Licensed trades and maintenance technicians install these inserts in metal fabrication, aerospace, marine, and general industrial applications where thread integrity is critical.

This insert is suited for use in applications where stainless steel corrosion resistance is required alongside positive thread locking. The 8-32 UNC thread profile fits standard coarse-pitch fastener configurations. With a minimum outside diameter of 0.205 inches and a maximum outside diameter of 0.220 inches, it installs into a properly tapped hole prepared with the correct HELI-COIL installation tap. Typical use cases include equipment assemblies, enclosures, and components subject to repeated fastener removal or vibration exposure. This product is sold as a single insert (Pkg Qty 1) with a minimum order quantity of 100 units.

Key Features

• Grade 304 stainless steel construction provides corrosion resistance in wet or chemically exposed environments
• Screw-locking design with 3-1/2 free coils delivers a maximum locking torque of 9 in/lb
• Minimum break-away torque of 1.50 in/lb ensures the insert remains in place under service loads
• 8-32 UNC tanged configuration for positive installation and controlled seating depth
• Bright finish; overall insert length of 0.164 inches at a 1D length-to-diameter ratio
• Outside diameter range of 0.205 to 0.220 inches for a secure press fit in the prepared bore

Compatibility

Designed as an OEM-style screw-locking threaded insert for 8-32 UNC threaded hole applications requiring a 1D insert length in parent materials prepared with the appropriate HELI-COIL installation tap and drill size.

Installation Notes

Installation requires the correct HELI-COIL tap to prepare the parent material bore before the insert is driven using a compatible installation tool. Power down or de-energize any equipment before performing thread repair or insert installation. After seating the insert to the correct depth, remove the installation tang using a tang break-off tool. Follow applicable fastener and assembly standards for the end-use application, and verify locking torque requirements are met after installation.