Kennametal 1799409 Threading Insert 20 Tpi Carbide Tialn

Product Description

The KENNAMETAL 1799409 is a carbide threading insert designed for external thread cutting on UN-standard fasteners and fittings. Manufactured to the Top Notch series specification, it carries the KC5010 grade with a PVD-applied TiAlN finish, delivering the wear resistance and edge integrity needed for consistent thread form in production or maintenance machining environments. The insert cuts a 60-degree included angle at 20 threads per inch (TPI) and is configured for right-hand threading. With a tip-to-top height of 0.1480 inches and a corner radius of 0.0063 inches, the geometry is optimized for precise thread profile control on external applications. Installed by machinists and tool-and-die professionals, this insert fits compatible Top Notch toolholders used on CNC lathes and manual turning centers.

This insert is suited for external threading operations on UN-standard work materials graded C3 and C4, covering a range of steels and harder materials where TiAlN coating provides thermal protection and extended tool life. It is a practical replacement insert for shops running Top Notch series tooling systems on turning centers, CNC lathes, and threading attachments. The right-hand configuration makes it appropriate for the majority of standard external threading setups encountered in general machining, maintenance repair, and component manufacturing.

Key Features

• KC5010 carbide grade with PVD TiAlN finish for wear resistance in demanding threading applications
• 20 TPI external thread cutting at a 60-degree included angle for UN-standard thread forms
• Right-hand insert orientation for standard external threading operations
• Corner radius of 0.0063 inches supports accurate thread root geometry
• Top Notch series compatibility for use with corresponding KENNAMETAL toolholders
• Compact geometry: tip-to-top height of 0.1480 inches, thickness of 0.1949 inches

Compatibility

Designed for use with KENNAMETAL Top Notch series threading toolholders accepting NTC3R20E insert style. Compatible with C3 and C4 material grades per the UN thread standard for external threading applications.

Installation Notes

Threading inserts should be installed by a qualified machinist using the appropriate torque wrench and insert screw specified for the Top Notch toolholder in use. Power down and lock out the machine spindle before seating or replacing any insert. Inspect the insert pocket and clamping screw for wear or debris before installation. Discard inserts showing chipping, cratering, or flank wear beyond acceptable limits to avoid thread-form deviation.