Kennametal 1796549 Threading Insert Stub Acme 5 Tpi KC5025

Product Description

The KENNAMETAL 1796549 is a carbide threading insert designed for Stub Acme thread profiles in both internal and external threading applications. Part of the Kennametal Top Notch series, it carries the KC5025 manufacturer grade with a PVD-applied TiAlN finish for improved wear resistance and tool life in demanding threading operations. The insert is right-hand, NAS-style, and cuts at a 29-degree included angle with an internal pitch of 5 TPI. With a cutting tip width of 0.0791 inches and a tip-to-top dimension of 0.1492 inches, this insert is built for precise, repeatable thread form geometry on ferrous and non-ferrous materials graded C2 and C6.

This insert is suited for use in CNC lathes and manual turning centers where Stub Acme threads are required. Stub Acme profiles are commonly found in lead screws, linear actuators, and mechanical power transmission components. The Top Notch toolholder system accepts this size 3 insert, making it a direct drop-in for shops already running compatible Kennametal Top Notch boring bars and external holders. Machinists and toolroom operators working in job shops, production machining, and maintenance environments will find this insert appropriate for both roughing and finishing passes on Stub Acme forms.

Key Features

• KC5025 carbide grade with PVD TiAlN coating for extended wear resistance
• NAS insert style, size 3, fits Top Notch series toolholders
• Cuts Stub Acme thread form at 29-degree included angle
• 5 TPI internal pitch, right-hand orientation
• Handles both internal and external threading operations
• Material grades C2 and C6 coverage for broad workpiece compatibility

Compatibility

Designed for use with Kennametal Top Notch series toolholders accepting size 3 NAS-style threading inserts. Compatible with both internal and external Stub Acme threading applications in C2 and C6 material grades.

Installation Notes

Threading inserts should be installed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before seating or replacing the insert. Use the appropriate Top Notch clamping mechanism and torque the insert clamp per the toolholder manufacturer guidelines. Inspect the insert seating pocket for chips or debris before installation to ensure proper insert support and thread form accuracy.