Heli-coil A1185-6CNPF750 3/8-16 Thread Insert 0.75 in

Product Description

The HELI-COIL A1185-6CNPF750 is a free running wire thread insert designed to create strong, durable internal threads in materials that are prone to thread stripping or wear. Manufactured from 304 stainless steel with a primer-free finish, this insert accepts a 3/8-16 UNC thread and measures 0.75 inches in overall length, representing a 2D length-to-diameter ratio. The tanged design aids installation by allowing positive engagement with a standard installation tool. Machinists, maintenance technicians, and trade professionals use these inserts when repairing stripped threads or building new assemblies that require corrosion-resistant thread reinforcement.

This insert is suited for applications in HVAC equipment, plumbing fixtures, electrical enclosures, pool equipment, and general industrial assemblies where 3/8-16 UNC threads must be installed or restored in base materials such as aluminum, cast iron, or mild steel. The 304 stainless steel construction makes it a practical choice in environments with moisture exposure or mild chemical contact. Each package contains one insert, with a minimum order quantity of 5 pieces.

Key Features

• 3/8-16 UNC thread size for broad fastener compatibility in trade and industrial applications
• 304 stainless steel construction provides corrosion resistance in humid or wet environments
• 0.75 inch overall length with a 2D length-to-diameter ratio for secure thread engagement
• Tanged design enables positive drive during installation with a standard insert tool
• Primer-free finish for use in assemblies where coatings may interfere with fit or adhesion
• 10 free coils for reliable load distribution across the installed thread length

Compatibility

Designed as a standard free running threaded insert for host materials tapped to accept 3/8-16 UNC Heli-Coil style inserts using the appropriate installation tool and tap size.

Installation Notes

Installation is performed by a machinist or qualified technician using a Heli-Coil style tap and installation tool matched to the 3/8-16 thread size. The host material must be drilled and tapped to the correct insert tap size before the insert is driven in. After installation, the tang is broken off using a tang break-off tool if required by the application. Always verify that the insert is flush with or slightly below the surface of the host material before assembling mating fasteners.