Carmex 11IR24UNBXC Threading Insert 24 Tpi 1/4 in Ic

Product Description

The CARMEX 11IR24UNBXC is a solid carbide laydown threading insert designed for internal UN thread cutting at 24 threads per inch. Built to the 11IR insert style with a 60-degree included angle, this insert delivers consistent thread form in a right-hand orientation. The solid carbide substrate is finished with a PVD-applied TiN coating, providing surface hardness and resistance to built-up edge during threading operations. With a 1/4-inch (0.2500 inch) inscribed circle and a 0.127-inch thickness, the insert fits standard 11IR toolholders used by machinists and CNC turning specialists across production and job shop environments.

This insert is rated for universal primary workpiece material compatibility, covering material codes H, K, M, N, P, and S - spanning steels, stainless, cast iron, non-ferrous alloys, high-temp alloys, and non-metallic materials. It is suited for internal threading operations in turned components where UN thread standards are required. Typical applications include threading bores in hydraulic fittings, fastener components, and precision machined parts. The right-hand cutting direction matches the majority of standard internal threading setups on CNC and manual lathes.

Key Features

• Solid carbide substrate with PVD TiN coating for wear resistance and edge stability
• 24 TPI UN internal thread form with 60-degree included angle
• Right-hand cutting orientation for standard internal threading
• 1/4-inch inscribed circle (0.2500 inch) fits 11IR-style toolholders
• Universal material compatibility across steel, stainless, cast iron, non-ferrous, and high-temp alloys
• Meets CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed as a direct-fit replacement for 11IR-style laydown threading insert seats used in standard internal threading toolholders requiring a 1/4-inch inscribed circle and 0.127-inch insert thickness.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or replacing the insert. Ensure the toolholder pocket is clean and free of chips before clamping the insert to achieve proper seating and thread accuracy. Follow the toolholder manufacturer torque guidelines for the clamping screw - do not overtighten.