Heli-coil A3585-2EN246 Screw-locking Insert 8-32 Unc

Product Description

The HELI-COIL A3585-2EN246 is a screw-locking wire thread insert designed to create a secure, vibration-resistant threaded hole in a parent material. Formed from 18-8 stainless steel, it provides corrosion resistance in demanding environments. The insert is a tanged style with an 8-32 UNC thread size and an overall length of 0.246 inches, representing a 1-1/2D length-to-diameter ratio. A locking feature integral to the coil holds the mating screw against loosening under shock and vibration loads. Licensed machinists, maintenance technicians, and precision assembly professionals install these inserts using a designated installation tool.

This insert is suited for applications where standard threaded holes require reinforcement or repair, particularly in assemblies subject to repeated fastener removal or vibration. The stainless steel construction makes it appropriate for use in environments with exposure to moisture, mild chemicals, or elevated temperatures. It is commonly installed in aluminum, magnesium, titanium, cast iron, and other parent materials across aerospace, industrial machinery, and general manufacturing applications. Each package contains one insert, and a minimum order quantity of 5 applies.

Key Features

• 18-8 stainless steel construction provides corrosion and heat resistance
• Tanged design for use with standard Heli-Coil installation tooling
• 8-32 UNC thread size with 1-1/2D length-to-diameter ratio
• Overall length of 0.246 inches fits shallow-bore installation requirements
• Maximum locking torque of 9 inch-pounds keeps fasteners secure under vibration
• Minimum break-away torque of 1.50 inch-pounds allows controlled removal when needed
• 6 free coils for consistent thread engagement across the insert body

Compatibility

Designed as an OEM-style wire thread insert for tapped holes requiring 8-32 UNC thread repair or reinforcement in metallic parent materials.

Installation Notes

Installation is performed by machinists or maintenance technicians using a compatible Heli-Coil installation tool matched to the 8-32 UNC thread size. The parent material must be drilled and tapped to the correct insert-tap specification before installation. After the insert is driven to the proper depth, the installation tang is broken off at the notch using a tang break-off tool. Always verify the installed thread with a go/no-go gauge before placing the assembly into service.