Kennametal 2429563 Carbide Thread Mill Insert Npt 18 Tpi

Product Description

The KENNAMETAL 2429563 is a carbide thread mill insert designed for cutting NPT (National Pipe Taper) threads at 18 teeth per inch (TPI). The insert carries a TiAlN coating applied via PVD process, which improves wear resistance and thermal stability during high-speed milling operations. With a 1/4-inch (6.35 mm) inscribed circle and STN insert style geometry, this insert is suited for both internal and external thread milling applications. It is used by machinists and toolroom professionals working in precision thread production on pipe fittings, manifolds, and fluid system components.

This insert is appropriate for thread milling operations on CNC machining centers where NPT thread forms are required on ferrous and non-ferrous materials. The 18 TPI configuration covers standard NPT profiles used widely in plumbing, hydraulic, and pneumatic system components. The TiAlN PVD coating supports extended tool life in demanding cutting conditions. The insert is packaged individually and is sold in a minimum order quantity of 10 units, making it suitable for shops that maintain a stocked insert inventory for recurring thread milling programs.

Key Features

• Carbide substrate with TiAlN PVD coating for thermal and wear resistance
• STN insert style geometry for thread milling applications
• Cuts both internal and external NPT thread forms
• 18 TPI configuration for standard NPT profiles
• 1/4-inch (6.35 mm) inscribed circle diameter
• Non-conical insert design

Compatibility

Designed for use in KENNAMETAL-compatible thread mill toolholders accepting STN-style carbide inserts with a 1/4-inch inscribed circle. Verify toolholder seat geometry and insert pocket specifications before installation.

Installation Notes

Thread mill inserts are installed and serviced by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the CNC program is in a safe state before changing inserts. Seat the insert fully against the pocket locating surfaces and torque the clamping screw to the toolholder manufacturer specification. Inspect the insert edge condition and pocket for debris or damage before each use.