Carmex 16IR24UNC-5/P30 Threading Insert 24 Tpi 3/8 in Ic

Product Description

The CARMEX 16IR24UNC-5/P30 is a laydown-style solid carbide threading insert designed for internal UN (Unified National) thread forms. Manufactured from uncoated solid carbide in grade C-5/P30, this insert cuts right-hand internal threads at 24 threads per inch (TPI) with a 60-degree included angle. The 3/8-inch inscribed circle and 0.146-inch thickness conform to standard 16 IR insert geometry. Solid carbide construction provides the rigidity and edge retention needed for consistent thread profile accuracy on a wide range of workpiece materials. Licensed machinists and CNC toolroom operators working on threading operations across universal material grades will find this insert well-suited to production and maintenance environments.

This insert is intended for internal threading applications on CNC lathes and turning centers where UN-standard threads are required. The P30 grade and universal workpiece material classification make it applicable across a broad range of ferrous and non-ferrous materials, including steel, stainless, cast iron, non-ferrous alloys, and heat-resistant superalloys. It is particularly suited to shops producing or repairing threaded bores to UN specifications in both production-run and job-shop scenarios.

Key Features

• Solid carbide construction in grade C-5/P30 for consistent edge retention and thread accuracy
• Uncoated finish suitable for applications where coating is not required or where re-grinding is planned
• 24 TPI cutting geometry with 60-degree included angle matches UN internal thread standard
• Right-hand cut, laydown insert style compatible with standard 16 IR toolholders
• 3/8-inch inscribed circle and 0.146-inch thickness conform to 16 IR dimensional standards
• Universal primary workpiece material classification covers H, K, M, N, P, and S material groups

Compatibility

Designed as a direct-fit replacement for standard 16 IR laydown threading insert seats. Compatible with toolholders accepting 16 IR geometry inserts for internal UN thread forms.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Use the appropriate torx or hex key to torque the clamping screw to the toolholder manufacturer specification. Inspect the insert pocket for chips or debris before seating, as contamination can affect insert orientation and thread profile accuracy.