Heli-coil A1185-2EN246 Free Running Insert 8-32 Unc

Product Description

The HELI-COIL A1185-2EN246 is a free running wire thread insert designed to create or restore precision internal threads in parent materials that require stronger, more durable thread engagement than the base material alone can provide. This tanged insert measures 0.246 inches in overall length, targets an 8-32 UNC thread size, and is manufactured from 18-8 stainless steel for corrosion resistance in demanding service environments. The coiled design conforms to the helical insert bore and locks into place during installation, distributing load across multiple thread engagement points. Machinists, maintenance technicians, and field service professionals install these inserts in stripped or damaged tapped holes across metal and non-metal substrates.

This insert is suited for light mechanical assemblies where an 8-32 UNC thread must be reinstated or reinforced. At a 1-1/2D length-to-diameter ratio and six free coils, it delivers solid thread engagement without excessive protrusion into blind holes. Common applications include equipment housings, instrument panels, automotive components, and industrial machinery where vibration or repeated fastener cycling degrades raw parent-material threads. The stainless steel construction makes it a practical choice where mild corrosion exposure is a factor.

Key Features

• 8-32 UNC thread standard for broad fastener compatibility in light mechanical assemblies
• Overall insert length of 0.246 inches with a 1-1/2D length-to-diameter ratio for controlled thread depth
• Tanged design for positive installation engagement and secure seating in the insert bore
• 18-8 stainless steel construction provides corrosion resistance in humid or chemically active environments
• Six free coils distribute clamping load across multiple thread contact points

Compatibility

Designed as an OEM-style threaded insert replacement for applications requiring an 8-32 UNC helical insert in standard HELI-COIL prepared bores.

Installation Notes

Installation requires a properly tapped HELI-COIL insert bore using the appropriate drill and tap size specified for 8-32 UNC inserts. Use the corresponding HELI-COIL installation tool to wind the insert flush to one thread below the surface of the parent material. After installation, break off the drive tang using a tang break-off tool where required by the application. Always follow safe handling practices and wear appropriate eye protection during tang removal.