Carmex 16IR14UNBMA Threading Insert 14 Tpi 3/8 in Ic

Product Description

The CARMEX 16IR14UNBMA is a solid carbide laydown threading insert designed for internal UN thread cutting at 14 threads per inch (TPI). Manufactured from submicron-grade carbide and finished with a PVD-applied TiAlN coating, this insert delivers consistent thread form and extended tool life across a wide range of workpiece materials. The 60-degree included angle conforms to standard Unified National thread geometry. With a 3/8-inch (0.3750-inch) inscribed circle and a 0.1460-inch thickness, it seats securely in compatible laydown-style toolholders. Right-hand cutting orientation suits the majority of standard internal threading operations on CNC lathes and turning centers.

This insert is suited for internal threading applications in production and job-shop environments running CNC turning equipment. The universal material grade designation covers a broad spectrum of workpiece materials including cast iron, non-ferrous alloys, stainless steel, steel, and heat-resistant superalloys, corresponding to ISO material groups H, K, M, N, P, and S. It is appropriate for both high-volume production threading and lower-volume precision work where consistent thread profile and surface finish are required.

Key Features

• Solid submicron carbide substrate for wear resistance and edge stability
• PVD TiAlN coating for reduced heat buildup and extended insert life
• 14 TPI internal UN thread form with 60-degree included angle
• 3/8-inch inscribed circle (0.3750 inches) for secure laydown-style seating
• Right-hand cutting orientation for standard internal threading setups
• Universal primary workpiece material compatibility across ISO groups H, K, M, N, P, and S

Compatibility

Designed for use in laydown-style internal threading toolholders accepting a 16IR insert style with a 3/8-inch inscribed circle. Suitable for cutting internal UN threads at 14 TPI in workpiece materials spanning ISO material groups H, K, M, N, P, and S.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine before changing inserts. Use the correct torque wrench and manufacturer-specified clamping screw to seat the insert without over-torquing, which can crack carbide. Verify insert orientation and tool stick-out before resuming threading cycles, and confirm thread pitch and hand match the programmed toolpath.