Carmex C12I18UNMT7 Carbide Turning Insert 18 Tpi Un

Product Description

The CARMEX C12I18UNMT7 is a coated solid carbide threading insert designed for internal UN thread turning operations. Manufactured to MT7 grade from submicron carbide, it delivers consistent thread form accuracy at 18 threads per inch (TPI) on UN-standard internal threads conforming to ANSI B1.1-1989. This insert suits CNC lathe and turning center applications where precision internal threading is required. Licensed trades machinists and CNC operators install this insert into compatible toolholders for production and job-shop threading cycles.

This insert is suited for internal threading of UN-standard profiles at 18 TPI in both left-hand and right-hand configurations, making it versatile across a range of bore threading setups. Typical applications include threading of hydraulic fittings, fluid system components, and precision machined parts in industrial, aerospace, and general manufacturing environments. The C12 insert style fits toolholders designed for that designation. Minimum order quantity is 3 inserts; each package contains 1 insert.

Key Features

• Solid submicron carbide substrate with MT7 manufacturer grade for wear resistance in threading operations
• Coated finish extends insert life in steel, stainless, and alloy applications
• 18 TPI internal UN thread form per ANSI B1.1-1989
• Supports both left-hand and right-hand insert orientation
• C12 insert style for compatibility with standard C12-designated threading toolholders
• Certified to CE, ISO 9001:2015, ISO 13485:2016, ISO 14001:2015, and ISO 45001 quality standards

Compatibility

Designed for use in C12-style internal threading toolholders. Fits setups configured for UN internal thread profiles at 18 TPI per ANSI B1.1-1989. No additional specific compatible model numbers were provided by the manufacturer for this listing.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Use the appropriate torx or clamping key specified by the toolholder manufacturer to secure the insert to the correct clamping torque. Inspect the insert pocket and clamping screw for wear or damage before each insert change.