Carmex 16IR24UNBMA Threading Insert 24 Tpi 3/8 in Ic

Product Description

The CARMEX 16IR24UNBMA is a solid carbide laydown threading insert designed for internal UN thread cutting at 24 threads per inch. Finished with a PVD-applied TiAlN coating, the insert delivers wear resistance and thermal stability during threading operations. It carries a 3/8 inch inscribed circle and measures 0.146 inches thick. The BMA manufacturer grade indicates a submicron carbide substrate, suited for consistent performance across a wide range of workpiece materials. This insert is installed by machinists and CNC lathe operators performing internal threading on production or job-shop turning centers.

This insert is appropriate for internal threading applications in both production and maintenance machining environments. The 60-degree included angle and right-hand cutting geometry make it a standard choice for UN-profile internal threads. The universal workpiece material designation covers steel, stainless, cast iron, non-ferrous alloys, and high-temperature alloys, giving this insert broad utility across common turning applications. It is packaged individually and typically sold in minimum quantities of 10 pieces per order.

Key Features

• Solid carbide construction with submicron grain substrate for edge stability
• PVD TiAlN coating for extended tool life and heat resistance
• 24 TPI UN internal thread profile with 60-degree included angle
• Right-hand cutting geometry for standard internal threading direction
• 3/8 inch inscribed circle with 0.1460 inch thickness for laydown-style toolholders
• Universal material grade compatibility covering steel, stainless, cast iron, non-ferrous, and superalloy workpieces

Compatibility

Designed for use in laydown-style internal threading toolholders accepting 16IR series inserts with a 3/8 inch inscribed circle and 0.146 inch thickness.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. The machine spindle must be fully stopped and the toolholder secured before seating or changing inserts. Use the correct torx or hex key specified by the toolholder manufacturer to achieve proper clamping without over-torquing the insert screw. Verify thread profile and pitch alignment against the workpiece drawing before initiating a threading pass.