Kennametal 2384513 Carbide Thread Mill Insert Un 24 Tpi

Product Description

The KENNAMETAL 2384513 is a carbide thread milling insert engineered for internal UN thread applications. Using manufacturer grade KC635M carbide with a PVD-applied TiAlN coating, this insert delivers hard, wear-resistant cutting edges suited for demanding thread milling operations. The STN insert style features an inscribed circle of 0.25 inches (6.35 mm) and is designed for use in thread milling toolholders that accept this geometry. Licensed machinists and CNC operators working in job shop and production environments rely on this insert for consistent thread form and extended tool life in steel, stainless, and other hard materials.

This insert is intended for internal thread milling of UN-standard threads at 24 teeth per inch. It fits thread mill bodies that accept the STN insert style and is suited for CNC machining centers performing internal threading operations in ferrous and non-ferrous materials. The TiAlN coating enhances heat resistance at the cutting zone, making it appropriate for dry or minimal-lubrication machining strategies. Typical applications include producing tapped holes in production parts where rigid tapping is not practical or where thread quality requirements are high.

Key Features

• KC635M carbide grade with PVD-applied TiAlN coating for heat and wear resistance
• STN insert style for use in compatible thread mill toolholders
• Internal UN thread standard at 24 TPI
• Inscribed circle of 0.25 inches (6.35 mm)
• Non-conical geometry for standard thread form

Compatibility

Designed for use in thread milling toolholders that accept the STN insert style for internal UN thread milling applications.

Installation Notes

Installation and replacement of thread milling inserts should be performed by qualified machinists or CNC tooling technicians. Ensure the spindle is fully stopped and the machine is in a safe lockout state before changing inserts. Use the correct torque driver for the insert clamping screw to avoid seat damage or insert movement during cutting. Verify thread form and pitch against the required UN specification using a calibrated thread gauge after setup.