Carmex 16ER12UNMXC Threading Insert 12 Tpi 3/8 Inch Carbide

Product Description

The CARMEX 16ER12UNMXC is a laydown threading insert designed for external UN thread cutting at 12 threads per inch (TPI). Manufactured from solid carbide micrograin material and finished with a PVD-applied TiN coating, this insert delivers consistent thread form and extended tool life in demanding turning applications. The 60-degree included angle conforms to the UN thread standard. With a 3/8 inch inscribed circle and 0.146 inch thickness, the 16ER12UNMXC seats securely in compatible 16ER toolholders. It is installed by CNC machinists and manual lathe operators in production and job-shop environments.

This insert is suited for right-hand external threading operations on a broad range of workpiece materials. The universal material grade designation covers steel, stainless steel, cast iron, non-ferrous alloys, and high-temperature alloys, making it a versatile choice for general threading work. Typical applications include producing standard UN fastener threads on turned components in aerospace, automotive, and general manufacturing settings.

Key Features

• Solid carbide micrograin substrate for improved wear resistance and edge stability
• PVD TiN coating reduces friction and extends cutting life
• 12 TPI UN thread profile with 60-degree included angle
• Right-hand external thread geometry for standard OD threading operations
• 3/8 inch inscribed circle fits standard 16ER toolholder pockets
• Universal material compatibility across steel, stainless, cast iron, non-ferrous, and superalloys
• Certified to CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed for use in standard 16ER laydown threading toolholders accepting a 3/8 inch inscribed circle insert. Confirm toolholder pocket geometry and seating requirements before installation.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine before changing inserts. Use the correct torque wrench and manufacturer-specified clamping screw to seat the insert without cracking the carbide substrate. Inspect the insert pocket for chips or debris before seating, and verify thread form with a thread gauge after the first test pass.