Kennametal 1796529 Threading Insert Size 3 Nas KC5025 Carbide

Product Description

The KENNAMETAL 1796529 is a solid carbide threading insert designed for cutting Stub Acme thread forms on both internal and external applications. It carries the KC5025 grade designation with a PVD-applied TiAlN finish, which provides wear resistance and thermal stability during threading operations. Built to NAS style geometry in Insert Size 3, it is part of the Kennametal Top Notch series. The 29-degree included angle matches the Stub Acme thread standard, and the left-hand insert hand designation makes it suitable for left-hand thread cutting. This insert is installed and used by machining professionals, CNC operators, and toolroom technicians working on lathes and turning centers.

This insert is suited for threading applications where Stub Acme thread forms are required, including production and maintenance machining environments. The left-hand orientation addresses applications such as lead screws, power transmission components, and other parts requiring left-hand Stub Acme threads. It handles both internal and external thread cutting at 10 TPI. The Top Notch series is designed for reliable indexing and consistent thread form repeatability across production runs in shops working with steel and other materials compatible with C2 and C6 carbide grades.

Key Features

• KC5025 grade solid carbide with PVD TiAlN coating for extended wear life
• NAS style geometry, Insert Size 3, for consistent thread form accuracy
• 29-degree included angle machined for Stub Acme thread standard
• Left-hand insert orientation for left-hand thread cutting applications
• Handles both internal and external threading at 10 TPI
• Part of the Top Notch series for repeatable indexing on compatible toolholders

Compatibility

Designed for use with Kennametal Top Notch series threading toolholders that accept NAS style Size 3 threading inserts. Specific toolholder compatibility should be confirmed against Kennametal Top Notch system documentation.

Installation Notes

Threading inserts should be installed and indexed by a qualified machinist or CNC operator with the machine fully powered down and the spindle locked before insert handling. Use the appropriate torque wrench and Kennametal-specified clamping hardware for the Top Notch toolholder to avoid seat damage or insert rocking. Verify insert orientation and hand designation before commencing the threading pass. Inspect the cutting tip and seating pocket for chips or debris prior to each insert index.