Carmex 11IR32UNBMA Threading Insert 32 Tpi 1/4 in Ic

Product Description

The CARMEX 11IR32UNBMA is a solid carbide laydown threading insert designed for internal UN thread cutting at 32 threads per inch. Built from submicron-grade carbide and finished with a PVD-applied TiAlN coating, this insert offers wear resistance and thermal stability across a wide range of workpiece materials. The 60-degree included angle matches standard UN thread form geometry. With a 1/4 inch inscribed circle and 0.127 inch thickness, the 11IR32UNBMA fits standard laydown insert pockets on CNC lathes and threading toolholders. Installation and tool changes are handled by machinists and CNC turning specialists in production and job shop environments.

This insert is suited for internal UN threading operations on materials spanning steel, stainless steel, cast iron, aluminum, and high-temperature alloys. The universal material grade designation covers a broad workpiece compatibility range. Common applications include threading bores on hydraulic fittings, fasteners, and precision mechanical components requiring 32 TPI UN thread form. Right-hand cutting orientation applies to standard forward-feed threading passes.

Key Features

• Solid submicron carbide substrate for enhanced edge toughness and wear life
• PVD TiAlN coating for thermal resistance and extended tool life across material grades
• 32 TPI UN internal thread form with 60-degree included angle
• Right-hand cut orientation for standard internal threading operations
• 1/4 inch inscribed circle fits standard 11IR-series laydown toolholders
• Universal material grade suitable for steel, stainless, cast iron, aluminum, and superalloys

Compatibility

Designed for use in 11IR-series laydown threading toolholders accepting a 1/4 inch inscribed circle insert. Compatible with workpiece material codes H, K, M, N, P, and S as defined by the manufacturer grade designation BMA.

Installation Notes

Threading inserts should be installed by a qualified machinist following the toolholder manufacturer's seating and clamping torque specifications. Ensure the machine spindle is fully stopped and the toolholder is secured before indexing or replacing inserts. Inspect the insert pocket and clamping screw for wear or contamination prior to seating the insert. Verify thread form and pitch with a thread gauge on a test cut before running full production.