Kennametal 1799589 Threading Insert NTB3LB KC5010 Carbide

Product Description

The KENNAMETAL 1799589 is a carbide threading insert designed for precision thread-cutting operations on CNC lathes and turning centers. Manufactured in the Top Notch series, it carries a TiAlN finish applied via PVD coating process and is offered in manufacturer grade KC5010 with a material grade of C3/C4. The insert profiles American Buttress threads with an included angle of 45 degrees, covering an internal pitch range of 8-16 TPI. Its left-hand orientation and compact geometry make it suited for both internal and external threading applications where tight tolerances and extended tool life are required.

This insert is used in metal cutting environments where American Buttress thread forms are required, commonly found in oil and gas, heavy equipment, and industrial machinery components. The left-hand configuration is specified for applications where thread direction demands a left-hand cutting approach. It is installed and operated by machinists and CNC tool setup technicians working with Top Notch-compatible toolholders. The TiAlN PVD coating provides thermal resistance and wear protection during high-speed threading passes on ferrous and alloy workpiece materials.

Key Features

• Carbide substrate with TiAlN PVD finish for extended wear resistance in threading applications
• American Buttress thread standard with 45-degree included angle for accurate thread form profiling
• Left-hand insert orientation for left-hand threading operations
• Covers 8-16 TPI internal pitch range for versatile buttress thread production
• Top Notch series insert style NTB for use with compatible Top Notch toolholders
• Compact insert size 3 with a thickness of 0.1949 inches and corner radius of 0.0065 inches

Compatibility

Designed for use with Top Notch series toolholders that accept NTB-style threading inserts. Specific toolholder compatibility should be confirmed against KENNAMETAL Top Notch system documentation prior to installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. The machine spindle must be stopped and all energy sources locked out before seating or replacing the insert in the toolholder. Ensure the insert pocket is clean and free of chips before clamping to maintain proper seating and thread form accuracy. Confirm correct insert hand orientation and toolholder compatibility before beginning a threading pass.