Carmex 1/4INRH36UNMXC Threading Insert 36 Tpi Un

Product Description

The CARMEX 1/4INRH36UNMXC is a laydown-style solid carbide threading insert engineered for internal UN thread cutting at 36 threads per inch. Built from micrograin solid carbide and finished with a PVD-applied TiN coating, it delivers consistent thread form and tool life in demanding CNC turning applications. The 11 IR insert style seats in standard laydown toolholders, and the 0.2500-inch inscribed circle with 0.1270-inch thickness matches common indexable toolholder pockets. This insert is suited for machinists and toolroom professionals working with unified national thread forms on internal bores.

This insert is used in CNC lathe and turning center operations where precision internal UN threads must be cut at 36 TPI. The right-hand cutting geometry is suited for standard right-hand internal threading passes on ferrous and non-ferrous workpieces. The TiN coating reduces friction and extends cutting edge life in production threading environments. Machinists running multi-pass threading cycles on internal features will find this insert well-matched to that workflow.

Key Features

• Solid micrograin carbide substrate for tight tolerances and sharp edge retention
• PVD TiN coating reduces tool wear and built-up edge in threading operations
• 11 IR laydown insert style fits standard indexable internal threading toolholders
• 36 TPI UN thread form for unified national internal thread cutting
• Right-hand cutting orientation for standard internal threading passes
• 0.2500-inch inscribed circle and 0.1270-inch thickness for consistent pocket seating

Compatibility

Designed as an OEM-style indexable insert for internal UN threading toolholders accepting the 11 IR laydown insert style with a 0.2500-inch inscribed circle.

Installation Notes

Installation is performed by qualified machinists on CNC turning equipment. Power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert fully in the toolholder pocket and torque the clamping screw to the toolholder manufacturer's specification. Inspect the insert pocket for chips or debris before seating to avoid insert rocking or premature edge failure.