Kennametal 2393680 Carbide Thread Mill Insert Un 10 Tpi

Product Description

The KENNAMETAL 2393680 is a carbide thread mill insert designed for external UN thread milling operations. It carries a TiAlN coating applied via a PVD process, which provides wear resistance and thermal stability during interrupted cutting. The insert uses the STN style geometry and is rated at 10 teeth per inch (TPI) with an inscribed circle of 0.625 inches (15.88 mm). This insert is intended for use by machinists and tooling technicians working in precision thread milling applications where consistent thread form and tool life are required.

The 2393680 is suited for external UN thread milling on ferrous and hard materials in CNC machining environments. The STN insert style and KC635M grade make it applicable in production and job-shop settings where thread form accuracy and surface finish are priorities. It is sold individually but requires a minimum order quantity of 5 units per order. Installation into a compatible thread mill toolholder is required before use.

Key Features

• Carbide substrate in KC635M grade for wear resistance in thread milling
• TiAlN coating via PVD process for thermal and oxidation resistance
• STN insert style for external UN thread applications
• 10 teeth per inch for standard UN thread form production
• Inscribed circle of 0.625 inches (15.88 mm)
• Non-conical geometry for consistent thread profile

Compatibility

Designed as an OEM-style replacement or direct-use insert for thread mill toolholders accepting STN-style carbide inserts in external UN thread milling configurations.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the machine before seating or replacing inserts. Ensure the toolholder is clean and free of debris before installing the insert. Verify that the toolholder is rated for the STN insert style and that all clamping hardware is properly torqued per the toolholder manufacturer specifications before resuming operation.