Kennametal 1288604 Carbide Thread Mill Insert 16 Tpi

Product Description

The KENNAMETAL 1288604 is a carbide thread mill insert designed for internal threading operations on UN-standard threads at 16 teeth per inch (TPI). Manufactured in the KC610M grade, the insert features a PVD-applied TiCN coating that provides wear resistance and extended tool life in demanding milling applications. With an inscribed circle (IC) diameter of 0.375 inches (9.53 mm), the STN insert style seats precisely in compatible thread mill toolholders. This insert is used by machinists and tool-and-die professionals working in production or job-shop environments where consistent thread quality is required.

This insert is suited for internal thread milling of UN-standard threads in a range of ferrous and non-ferrous materials. The 16 TPI configuration targets common fastener thread pitches used in general mechanical assemblies. It is typically installed in CNC machining centers running thread milling cycles, where the insert is exchanged at end of life rather than replacing the full toolholder body.

Key Features

• KC610M carbide grade with PVD-applied TiCN coating for wear and heat resistance
• STN insert style for secure seating in compatible thread mill bodies
• 16 TPI for UN internal thread milling applications
• 0.375 inch (9.53 mm) inscribed circle diameter
• Non-conical geometry for straightforward thread mill cycle programming

Compatibility

Designed as an OEM-style replacement insert for compatible KENNAMETAL STN-style thread mill toolholders accepting a 0.375 inch IC insert for UN internal threading.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machining center spindle before exchanging inserts. Use the appropriate torx or hex key specified by the toolholder manufacturer to seat the insert securely without overtightening. Verify thread mill programming parameters match the 16 TPI pitch before resuming cutting operations.