Kennametal 1796525 Threading Insert NAS3L12 KC5025 Carbide

Product Description

The KENNAMETAL 1796525 is a carbide threading insert designed for cutting Stub Acme thread forms on both internal and external workpieces. Part of the Top Notch series, it carries a KC5025 grade designation and a TiAlN finish applied via PVD coating. The left-hand orientation and 29-degree included angle make it specific to Stub Acme thread geometry at 12 TPI. The insert measures 0.1949 inches thick with a tip-to-top height of 0.1492 inches and a cutting tip width of 0.0327 inches. Machinists and CNC lathe operators use this insert where controlled chip formation and wear resistance are required in threading operations.

This insert fits turning centers and lathes equipped with Top Notch-compatible toolholders. It is suited for both internal threading and external threading applications, making it versatile across job-shop and production environments. The Size 3 insert format and NAS insert style indicate fitment with standard Top Notch size 3 toolholders. It is appropriate for ferrous and non-ferrous materials within the C2 and C6 material grade classifications. Stub Acme thread profiles are common in power transmission components, lead screws, and linear actuators, and this insert is intended for shops producing or reconditioning those parts.

Key Features

• KC5025 carbide grade with PVD-applied TiAlN coating for extended tool life in threading applications
• Left-hand insert orientation for Stub Acme thread geometry
• 29-degree included angle matched to Stub Acme thread form standard
• 12 TPI internal and external thread capacity in a single insert
• Size 3 NAS-style insert body compatible with Top Notch series toolholders
• Cutting tip width of 0.0327 inches and corner radius of 0.0330 inches for precise thread root geometry

Compatibility

Designed for use with Top Notch series size 3 toolholders accepting NAS-style threading inserts. Compatible with C2 and C6 material grade workpiece classifications as specified by the manufacturer.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer's clamping torque and seating requirements for Top Notch series inserts. Ensure the machine spindle is fully stopped and locked out before changing inserts. Verify insert orientation and hand designation match the programmed tool path direction before starting a threading cycle. Use the correct insert pocket and clamping hardware specified for Size 3 Top Notch toolholders to ensure proper seating and repeatability.