Kennametal 1799400 Threading Insert 16 Tpi KC5025 Carbide

Product Description

The KENNAMETAL 1799400 is a carbide threading insert designed for external thread cutting on UN-standard threads at 16 TPI. Part of the Top Notch series, it features a TiAlN finish applied via PVD coating, which provides wear resistance and thermal stability during interrupted and continuous threading operations. The insert carries a KC5025 manufacturer grade and is rated for C2 and C6 material grades. With a 60-degree included angle and a right-hand cutting orientation, it suits standard unified thread profiles. Licensed machinists and CNC operators use this insert in turning centers and threading toolholders configured for the Top Notch platform.

This insert is intended for external threading applications on lathes and turning centers where a 16 TPI UN thread form is required. The NTC3R16E designation identifies the insert style, size 3 body, right-hand geometry, and 16 TPI pitch. It is well suited for production threading on ferrous and non-ferrous workpieces where the TiAlN PVD coating delivers consistent tool life across moderate to high cutting speeds. The Top Notch system is a common platform in job shops and production machining environments.

Key Features

• Carbide substrate with TiAlN PVD coating for wear resistance and heat management
• 16 TPI external thread pitch for UN unified thread standard applications
• 60-degree included angle matches standard UN and UNC/UNF thread profiles
• Right-hand cutting geometry for conventional external threading passes
• KC5025 grade balances toughness and wear resistance across a range of workpiece materials
• Size 3 Top Notch insert body for use with compatible Top Notch toolholders

Compatibility

Designed for use in KENNAMETAL Top Notch series threading toolholders that accept size 3 NTC-style inserts. Verify toolholder pocket specification before ordering to confirm seating and clamping compatibility.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine before changing inserts. Use the correct torque wrench and clamp screw specified by the toolholder manufacturer - do not overtighten, as this can fracture the carbide insert. Inspect the toolholder pocket and clamp for wear or debris before seating the new insert.