Kennametal 2429565 Carbide Thread Mill Insert Npt 11.5 Tpi

Product Description

The KENNAMETAL 2429565 is a carbide thread mill insert designed for cutting NPT threads at 11.5 teeth per inch (TPI). Manufactured in the STN insert style with a KC635M grade carbide substrate, this insert features a TiAlN coating applied via PVD process for improved wear resistance and heat tolerance at the cutting edge. The 3/8 inch (9.53 mm) inscribed circle size suits standard thread milling toolholders. This insert handles both internal and external NPT thread profiles, making it a versatile single-insert solution for shops threading pipe fittings and fluid system components.

This insert is suited for thread milling NPT pipe threads in production and job-shop environments. NPT is the standard tapered thread used in plumbing, pneumatic, and hydraulic pipe connections across residential and commercial applications. Machinists and toolroom technicians install this insert into compatible thread mill toolholders on CNC machining centers. It is appropriate for threading ferrous and non-ferrous materials where the KC635M carbide grade and TiAlN coating provide adequate tool life under typical cutting conditions.

Key Features

• STN insert style with KC635M carbide substrate for rigidity and edge strength
• TiAlN PVD coating for heat resistance and extended wear life
• NPT thread standard at 11.5 TPI for standard tapered pipe thread profiles
• Capable of both internal and external NPT thread milling in a single insert
• 3/8 inch (9.53 mm) inscribed circle for compatibility with standard STN-style toolholders
• Non-conical geometry for straightforward thread milling programming

Compatibility

Designed for use in STN-style thread mill toolholders compatible with 3/8 inch inscribed circle inserts. Suitable for machining NPT tapered pipe threads at 11.5 TPI on CNC milling equipment.

Installation Notes

Installation is performed by qualified machinists or CNC toolroom technicians. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before seating or replacing inserts. Use the correct insert screw torque procedure specified by the toolholder manufacturer for the STN seat style. Verify thread pitch and taper angle in the CNC program before running the first part.