Kennametal 1796557 Threading Insert KC5025 Carbide 12 Tpi

Product Description

The KENNAMETAL 1796557 is a carbide threading insert designed for external thread cutting applications on precision machining equipment. Manufactured to the NJ insert style in the Top Notch series, this right-hand insert carries a KC5025 grade designation and features a PVD-applied TiAlN finish for improved wear resistance and heat management at the cutting edge. It cuts to the UNJ thread standard at 12 threads per inch with a 60-degree included angle. The insert measures 0.1949 inches thick and carries a corner radius of 0.0130 inches. It is installed by machinists and toolroom technicians on lathes and CNC turning centers performing external threading operations.

This insert is suited for external threading passes on aerospace-grade and general-purpose materials where UNJ thread form accuracy is required. The Top Notch series uses a secure top-clamping toolholder system common in production turning environments. The KC5025 grade is a PVD-coated carbide formulated for threading steels and alloys where edge toughness and coating adhesion matter. Applications include shaft threading, fitting manufacture, and fastener production in both job shop and production environments.

Key Features

• NJ insert style, Top Notch series - compatible with Top Notch clamping toolholders
• KC5025 PVD carbide grade with TiAlN finish for wear and heat resistance
• Right-hand external threading at 12 TPI, 60-degree included angle, UNJ thread standard
• Corner radius of 0.0130 inches (0.33 mm) for accurate thread form geometry
• Insert size 3014, thickness 0.1949 inches (4.95 mm)
• Material grades C2 and C6 coverage

Compatibility

Designed as an OEM-style replacement insert for Top Notch series external threading toolholders accepting NJ-style inserts.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians on lathes or CNC turning centers. Power down and lock out the spindle before seating or removing inserts. Use the correct Top Notch clamping screw and torque driver to secure the insert without over-torquing the clamp. Inspect the insert seat and clamp for chips or debris before installation to ensure proper seating and thread form accuracy.