Carmex C18I18UNMT7 Carbide Turning Insert 18 Tpi Un

Product Description

The CARMEX C18I18UNMT7 is a coated solid carbide turning insert engineered for internal UN thread milling and turning applications. Built to the MT7 manufacturer grade with a submicron carbide substrate, this insert delivers consistent thread form accuracy at 18 TPI on UN-standard internal profiles. It supports both left-hand and right-hand cutting orientations, making it a versatile choice for threading bores across a range of workpiece configurations. Licensed machinists and CNC tooling technicians working to ANSI B1.1-1989 thread standards will find this insert well suited for production and job-shop environments.

This insert is designed for internal threading operations on UN-profile threads at 18 TPI. The C18 insert style fits compatible toolholders used in CNC lathes and turning centers handling internal thread forms. It is appropriate for production threading in both conventional and CNC turning setups where close tolerance UN threads are required. The coated finish extends tool life in interrupted cuts and moderate-to-high surface-speed applications on steel and similar machinable materials.

Key Features

• Solid carbide construction with submicron grain material grade for improved wear resistance
• MT7 manufacturer grade coated finish for extended cutting life
• 18 TPI internal UN thread profile conforming to ANSI B1.1-1989
• Supports both left-hand and right-hand insert orientations
• C18 insert style for use in compatible internal threading toolholders
• Certified to CE, ISO 9001:2015, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed for use with compatible C18-style internal threading toolholders for UN-profile thread turning at 18 TPI per ANSI B1.1-1989.

Installation Notes

Installation and indexing of turning inserts should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before seating or replacing the insert. Use the appropriate torx or insert-clamping key specified by the toolholder manufacturer to secure the insert - do not overtighten or substitute fasteners. Verify insert orientation (left-hand or right-hand) against the toolholder configuration before resuming cutting operations.