Kennametal 1796552 Threading Insert KC5010 8 Tpi Unj

Product Description

The KENNAMETAL 1796552 is a carbide threading insert designed for external thread-turning operations on CNC lathes and turning centers. Manufactured in the NJ insert style with a KC5010 grade substrate, it carries a PVD-applied TiAlN finish that improves wear resistance and tool life at elevated cutting temperatures. This insert produces 60-degree UNJ-standard external threads at 8 threads per inch (TPI) and is ground right-hand. Insert size is 3020, thickness is 0.1949 inches (4.95 mm), and the tip-to-top height is 0.0980 inches (2.49 mm). It belongs to the Top Notch series, which uses a notch-style clamping system common on dedicated threading toolholders. Machinists and CNC operators in aerospace, precision machining, and general metalworking environments install this insert.

This insert is suited for external threading applications requiring UNJ thread form compliance, which is the controlled-radius root thread standard used widely in aerospace fastener and fitting work. Material grades C3 and C4 indicate suitability for threading hardened steels, alloy steels, and similar ferrous materials at moderate-to-high surface speeds. The TiAlN PVD coating performs well in dry or minimal-coolant cutting strategies. The right-hand designation means the insert cuts from left to right in a standard spindle-forward threading pass. It seats into Top Notch series threading toolholders that accept the 3020 insert size.

Key Features

• KC5010 carbide grade with PVD TiAlN coating for extended wear resistance in ferrous threading
• UNJ thread standard compliance for aerospace and precision external thread applications
• 8 TPI external pitch with 60-degree included angle for standard unified thread form geometry
• NJ insert style in Top Notch series for secure notch-clamp toolholder retention
• Corner radius of 0.0193 inches (0.49 mm) for controlled root form at the thread tip
• Right-hand cut orientation; insert size 3020 with 0.1949-inch thickness

Compatibility

Designed for use in Top Notch series threading toolholders that accept the NJ3020 insert size. Verify toolholder compatibility with the 3020 insert designation and NJ insert style before installation.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or CNC toolroom technician. Power down and lock out the machine spindle before seating or replacing the insert. Use the appropriate torque wrench and clamp screw specified by the toolholder manufacturer - do not overtighten, as carbide inserts are brittle and can crack under excessive clamping force. Confirm thread pitch programming in the CNC control matches the 8 TPI specification of this insert before initiating a threading cycle.