Carmex C18I12UNMT7 Carbide Turning Insert 12 Tpi Un

Product Description

The CARMEX C18I12UNMT7 is a coated solid carbide turning insert engineered for internal UN thread cutting at 12 threads per inch (TPI). Built to ANSI B1.1-1989 standards, it carries a submicron carbide substrate with an MT7 manufacturer grade designation, delivering consistent edge performance in precision threading applications. This insert supports both left-hand and right-hand cutting orientations, making it adaptable across a range of CNC lathe setups without requiring a separate insert for each hand. It is installed by machinists and toolroom technicians performing internal thread turning operations on lathes and turning centers.

This insert is suited for internal threading on CNC turning centers and manual lathes where UN-standard threads at 12 TPI are required. Its coated finish extends tool life in ferrous and non-ferrous materials compared to uncoated alternatives. The MT7 grade and submicron carbide construction make it appropriate for production environments where thread quality and insert consistency are critical. Machinists working in precision parts manufacturing, job shops, and production turning operations will find this insert applicable to a wide range of internal threading tasks.

Key Features

• Solid carbide construction with coated finish for extended wear resistance
• Submicron carbide substrate under MT7 manufacturer grade for consistent cutting performance
• Supports both left-hand and right-hand internal thread cutting in a single insert style
• Conforms to ANSI B1.1-1989 UN thread standard for reliable thread form accuracy
• Certified to CE, ISO 9001:2015, ISO 13485:2016, ISO 14001:2015, and ISO 45001 quality and environmental standards

Compatibility

Designed for use in compatible C18-style internal threading toolholders configured for UN thread forms at 12 TPI per ANSI B1.1-1989. Verify toolholder pocket specifications and insert seat geometry before installation.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians on CNC or manual turning equipment. Power down and lock out the machine before seating or replacing inserts. Use the appropriate torque wrench and insert clamping hardware specified by the toolholder manufacturer - do not overtighten by hand. Confirm insert orientation (left-hand or right-hand) matches the programmed toolpath before resuming cutting operations.