Kennametal 1799591 Threading Insert KC5025 Carbide Tialn

Product Description

The KENNAMETAL 1799591 is a Top Notch series carbide threading insert designed for precision thread-cutting operations on CNC lathes and turning centers. The insert carries a TiAlN finish applied via PVD coating, which provides thermal resistance and wear protection during high-speed threading passes. It is configured as a left-hand NTB style insert with a 45-degree included angle and a corner radius of 0.0065 inches, suited for generating American Buttress thread profiles across a pitch range of 8 to 16 TPI. Machinists and tool-and-die professionals install this insert into compatible Top Notch holders for both internal and external threading applications.

This insert fits residential and industrial turning applications where American Buttress thread forms are required, such as heavy-duty mechanical assemblies, hydraulic components, and power transmission parts. Rated for material grades C2 and C6, the insert is appropriate for threading carbon steels, alloy steels, and cast irons. It is sold individually per package, with a minimum order quantity of 5 pieces, making it suited for shop stock replenishment or production-run tooling setups on manual or CNC turning equipment.

Key Features

• NTB insert style in Left Hand orientation for American Buttress thread profiles
• KC5025 carbide grade with PVD-applied TiAlN coating for extended tool life in steel turning
• Covers internal and external threading across 8 to 16 TPI pitch range
• 45-degree included angle with 0.0065 inch corner radius for accurate thread form geometry
• Top Notch series design for secure seating and repeatable insert indexing
• Compact insert size 3 format at 0.1949 inches thickness for use in standard Top Notch toolholders

Compatibility

Designed for use with Kennametal Top Notch series threading toolholders that accept size 3 NTB style inserts. Compatible with internal and external threading applications on material grades C2 and C6.

Installation Notes

This insert is installed by a machinist or toolroom technician into a compatible Top Notch threading toolholder. Ensure the machine spindle is at a complete stop and all power is locked out before indexing or replacing the insert. Use the appropriate Torx or hex key as specified by the toolholder manufacturer to secure the insert clamp to the correct clamping torque for the holder style. Inspect the insert pocket and clamp for chips or debris before seating the new insert to maintain proper tool geometry and thread accuracy.