Carmex 16IR12UNMXC Threading Insert 12 Tpi Un Carbide

Product Description

The CARMEX 16IR12UNMXC is a laydown-style threading insert designed for internal thread cutting on CNC lathes and turning centers. Built from solid carbide with a TiN coating applied via PVD process, this insert delivers consistent thread form geometry on a wide range of workpiece materials. It cuts Unified National (UN) thread forms at 12 threads per inch with a 60-degree included angle. The right-hand configuration and 16IR insert style make it a direct fit for standard 16-series laydown threading toolholders. Machinists and CNC operators in production and job-shop environments install this insert for reliable, repeatable internal threading performance.

This insert is suited for internal threading operations on both ferrous and non-ferrous materials. The MXC grade designation indicates a universal carbide substrate with PVD TiN coating, making it appropriate for steel, stainless steel, cast iron, aluminum, non-ferrous alloys, and high-temperature alloys. It is commonly used in residential, commercial, and industrial machining applications wherever 12 TPI UN internal threads are required. The 3/8-inch inscribed circle dimension corresponds to the 16-series insert size standard.

Key Features

• Internal UN thread form at 12 threads per inch with 60-degree included angle
• Solid carbide construction with TiN coating via PVD process for extended edge life
• MXC universal grade compatible with steel, stainless, cast iron, aluminum, non-ferrous, and high-temperature alloys
• Right-hand cutting orientation for standard internal threading setups
• 16IR insert style with 3/8-inch inscribed circle for use in 16-series laydown toolholders
• Certified to CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed as an OEM-style replacement threading insert for 16-series laydown internal threading toolholders accepting 16IR-style inserts.

Installation Notes

This insert is installed and replaced by CNC machinists and tool-crib technicians using standard insert-locking screws and torx or hex keys specified by the toolholder manufacturer. Power down and de-energize the machine spindle before changing inserts. Inspect the toolholder pocket and clamping screw for wear or damage before seating a new insert. Do not exceed the cutting parameters recommended for the workpiece material and insert grade.