Carmex 16IR48UNP25C Threading Insert 48 Tpi 3/8 Ic Un

Product Description

The CARMEX 16IR48UNP25C is a solid carbide laydown threading insert designed for internal UN thread cutting at 48 threads per inch (TPI). Built to the 16IR insert style, it features a 3/8 inch (0.3750 inch decimal) inscribed circle and a thickness of 0.146 inches. The P25C manufacturer grade with C5 material grade targets a wide range of workpiece materials, making it a versatile choice for threading operations on CNC lathes and turning centers. A PVD-applied TiN coating improves wear resistance and extends tool life in production environments. This insert is installed and changed by machinists and CNC operators on turning equipment.

The 16IR48UNP25C is suited for internal right-hand UN thread cutting on a broad range of materials, including those classified under material codes H, K, M, N, P, and S, covering steels, stainless steels, non-ferrous metals, high-temperature alloys, and general-purpose materials. The 60-degree included angle is standard for UN thread forms. It is commonly used in job shop, production machining, and manufacturing environments where consistent internal thread quality is required across medium to high production volumes.

Key Features

• Solid carbide construction with PVD TiN coating for extended wear life
• 48 TPI UN internal right-hand thread form with 60-degree included angle
• 3/8 inch inscribed circle (0.3750 inches) and 0.146 inch thickness for 16IR toolholder compatibility
• P25C grade suitable for universal workpiece material range (H, K, M, N, P, S codes)
• Meets CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed as an OEM-style replacement and standard fit for 16IR-style laydown threading insert toolholders configured for internal UN thread cutting applications.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Power down and lock out the machine before indexing or replacing inserts. Use the correct torque wrench and insert screw specified by the toolholder manufacturer when seating the insert to avoid cracking the carbide substrate. Inspect the toolholder pocket for chips or debris before seating a new insert.