Carmex 14I16UNMT7 Carbide Thread Mill Insert 16 Tpi

Product Description

The CARMEX 14I16UNMT7 is a carbide thread mill insert designed for internal thread milling operations to UN thread standards. Built from submicron carbide and finished with a TiAlN coating, this insert delivers wear resistance and thermal stability during high-speed cutting. It produces internal UN threads at 16 teeth per inch (TPI) and carries a manufacturer grade of MT7. The non-conical geometry and 14I insert style make it a direct-fit solution for compatible thread milling toolholders. Licensed machinists and CNC tooling technicians working in metalworking, production machining, and maintenance environments are the primary users of this insert.

This insert is suited for internal thread milling on ferrous and non-ferrous materials in production and job-shop settings. It conforms to ANSI B1.1-1989 for Unified National thread forms. Applications include threading bores in workpieces where tap breakage is a concern or where a single tool must produce multiple thread diameters. The TiAlN finish extends tool life in dry or near-dry cutting conditions and in harder workpiece materials.

Key Features

• Submicron carbide substrate for improved toughness and edge retention
• TiAlN coating for thermal resistance and extended tool life in high-speed applications
• Internal thread milling geometry at 16 TPI to UN thread standard
• Conforms to ANSI B1.1-1989 Unified National thread specification
• 14I insert style at 0.122 inches (3.1 mm) thickness for precise toolholder seating
• Certified to CE, ISO 9001:2015, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed for use in thread milling toolholders that accept the 14I insert style. Verify toolholder specifications for insert size code 14 and confirm thread form and TPI requirements match UN 16 TPI before installation.

Installation Notes

Installation and tool changes should be performed by qualified CNC machinists or tooling technicians with the machine in a full stop and lockout/tagout procedures in place. Use the correct torque wrench and insert screw specified by the toolholder manufacturer when seating the insert. Inspect the insert pocket for debris or damage before seating a new insert. Verify programmed thread parameters in the CNC control match the 16 TPI UN specification before running the first part.