Kennametal 4176165 Threading Insert KCU10 Carbide Npt

Product Description

The KENNAMETAL 4176165 is a carbide threading insert in the Top Notch series, designed for cutting NPT (National Pipe Taper) threads in both internal and external applications. The insert carries a KCU10 manufacturer grade and features an AlTiN finish applied via PVD coating, which improves wear resistance and thermal stability at the cutting edge. Configured as a right-hand insert with an NDC style geometry, it operates at 11.5 TPI with a 60-degree included angle. This type of insert is used by machinists and tool and die professionals on CNC lathes and manual turning centers where precise thread form and surface finish are required.

The 4176165 is suited for NPT threading operations in production and job shop environments. Its right-hand orientation and Top Notch series compatibility make it a direct fit for standard Top Notch toolholders used in residential, commercial, and industrial pipe fitting applications. The insert handles both internal and external NPT thread profiles, making it a versatile option when a single insert geometry needs to cover multiple setups. This part is sold as a single insert; minimum order quantity is 5 units.

Key Features

• AlTiN finish via PVD coating for enhanced wear and heat resistance
• KCU10 carbide grade suited for NPT threading operations
• 60-degree included angle matches NPT thread form requirements
• Right-hand cut geometry for standard CNC and manual lathe setups
• Handles both internal and external thread profiles in a single insert style
• Top Notch series insert for use with compatible Top Notch toolholders

Compatibility

Designed for use with Top Notch series toolholders that accept size 3115 inserts. Compatible with both internal and external NPT threading applications. Verify toolholder and insert size compatibility before installation.

Installation Notes

Threading inserts of this type are installed and replaced by machinists or tool room technicians. Power down and lock out the machine before seating or removing the insert. Use the correct torque on the clamping screw per the toolholder manufacturer guidelines and ensure the insert is fully seated with no rocking. Inspect the insert edge condition before each use; a chipped or worn edge will produce out-of-tolerance thread forms.