Heli-coil A1185-2EN164 Free Running Insert 8-32 Unc

Product Description

The HELI-COIL A1185-2EN164 is a free running helical wire thread insert designed to create a standard 8-32 UNC internal thread in a parent material that has been drilled and tapped to the appropriate HELI-COIL tap size. Manufactured from 18-8 stainless steel, the insert delivers corrosion resistance and hardness that typically exceeds the strength of the mating screw. The overall installed length is 0.164 inches, placing it in the 1D length-to-diameter ratio class, which is suited for applications where thread depth is limited. A tanged design is used for installation with a standard drive tool, and the insert features 3-1/2 free coils. Electricians, millwrights, mechanics, and maintenance technicians routinely install these inserts to restore stripped threads or to establish strong threads in softer base materials.

This insert is used in light-duty to medium-duty fastening applications across HVAC equipment, electrical enclosures, plumbing fixtures, and general mechanical assemblies. The 8-32 UNC thread form is one of the most common machine screw sizes in trade work, making this insert a practical repair and new-installation solution in both shop and field environments. The single-insert packaging is suited for targeted repairs, while the minimum order quantity supports stocking in service vehicles or maintenance toolboxes.

Key Features

• 8-32 UNC thread form for compatibility with standard machine screws
• 18-8 stainless steel construction for corrosion resistance and durability
• Tanged design for installation with a standard HELI-COIL drive tool
• 1D length-to-diameter ratio at 0.164 inches overall insert length for shallow-thread applications
• 3-1/2 free coils provide consistent thread engagement across the insert length

Compatibility

Designed as an OEM-style thread repair and thread installation insert for any parent material tapped to the HELI-COIL 8-32 UNC insert tap specification.

Installation Notes

Installation requires the parent material to be drilled and tapped with the correct HELI-COIL tap for the 8-32 insert size before the insert is driven in. A dedicated HELI-COIL installation tool is used to wind the insert into the tapped hole. After installation, the tang must be broken off using a tang break-off tool before the fastener is installed. Power down or de-energize any equipment before performing thread repair work on electrical or HVAC components.