Kennametal 1796515 Threading Insert NA3R5 KC5025 Carbide

Product Description

The KENNAMETAL 1796515 is a carbide threading insert designed for Acme thread-form cutting at 5 threads per inch (TPI) with a 29-degree included angle. Finished with a PVD-applied TiAlN coating, it delivers improved wear resistance and thermal stability compared to uncoated grades. Assigned manufacturer grade KC5025, this insert is part of the Top Notch series and suits both internal and external threading operations. The right-hand configuration and NA insert style position it for precision thread-form work on lathes and turning centers. Licensed machinists and CNC turning specialists are the primary installers.

This insert is suited for threading applications on Acme thread forms in both internal and external configurations. It performs on a range of material grades classified as C2 and C6, covering general-purpose and harder steel cutting scenarios. The Top Notch series mounting format positions the insert securely in compatible Top Notch-style toolholders. Typical use cases include threading on manual lathes and CNC turning centers in job shop, maintenance machining, and production environments where Acme threads are required for lead screws, jacks, and power transmission components.

Key Features

• Carbide substrate with PVD TiAlN coating for enhanced heat and wear resistance
• Acme thread form, 5 TPI, with 29-degree included angle
• Right-hand cut orientation for standard lathe threading operations
• Suitable for both internal and external Acme thread cutting
• Top Notch series insert style for secure, repeatable seating in compatible holders
• Material grades C2 and C6 covering a broad range of workpiece materials

Compatibility

Designed as an OEM-style replacement insert for Top Notch series threading toolholders accepting NA3R5 insert style. Verify holder specification against the Top Notch series insert size 3 format before installation.

Installation Notes

Installation is performed by a machinist or CNC turning specialist. Power down and lock out the machine before indexing or replacing the insert. Use the appropriate torque wrench for the clamping screw to avoid cracking the carbide substrate - refer to the toolholder manufacturer torque specification. Ensure the seating pocket is clean and free of chips before seating the insert to maintain accurate thread geometry.