Kennametal 1796449 Threading Insert 28 Tpi KC5010 Carbide

Product Description

The KENNAMETAL 1796449 is a carbide threading insert designed for external UNJ thread forms at 28 TPI. Manufactured in the NJK insert style with a KC5010 grade carbide substrate, it features a TiAlN finish applied via PVD coating for wear resistance during precision threading operations. The 60-degree included angle is standard for UNJ thread profiles. At 0.1949 inches thick with a tip-to-top dimension of 0.1409 inches and a corner radius of 0.0059 inches, this insert is engineered for consistent thread geometry. It is used by machinists and toolroom technicians running CNC lathes or manual threading operations on precision components.

This insert is suited for external threading applications requiring UNJ thread standards, which are common in aerospace and high-reliability mechanical assemblies. The right-hand cutting orientation and Top Notch series toolholder interface make it compatible with KENNAMETAL Top Notch threading toolholders accepting the 3006 insert size. The KC5010 grade and PVD TiAlN coating support threading in a range of engineering materials including C3 and C4 material grades, covering a broad spectrum of hardened and difficult-to-machine alloys.

Key Features

• NJK insert style in size 3006 for Top Notch series toolholder compatibility
• KC5010 carbide grade with PVD-applied TiAlN finish for wear and heat resistance
• 28 TPI external UNJ thread form with 60-degree included angle
• Right-hand cutting orientation
• Corner radius of 0.0059 inches (0.15 mm) for accurate thread root profile
• C3 and C4 material grade classification for broad workpiece compatibility

Compatibility

Designed for use in KENNAMETAL Top Notch series threading toolholders accepting 3006-size NJK style inserts. Suitable for external UNJ threading at 28 TPI in right-hand orientation.

Installation Notes

Installation should be performed by a qualified machinist with the machine fully powered down and the spindle locked before indexing or replacing inserts. Use the appropriate torque wrench and insert screw specified for the Top Notch toolholder to secure the insert without over-tightening. Inspect the toolholder pocket for chips or damage before seating a new insert. Verify thread pitch and hand orientation against the workpiece drawing before commencing any threading pass.