Kennametal 1112946 Threading Insert NTF3R KC730 Carbide

Product Description

The KENNAMETAL 1112946 is a carbide threading insert in the Top Notch series, designed for cutting both internal and external threads on metalworking lathes and turning centers. This NTF3R style insert carries a KC730 grade carbide substrate with a Titanium Nitride (TiN) finish applied via PVD coating. It covers external thread pitches from 0.60 to 2.50 mm and 10 to 44 TPI, and internal thread pitches from 1.00 to 2.50 mm and 9 to 24 TPI. The partial profile 60-degree included angle suits Unified and metric thread forms. Toolroom machinists and CNC operators install this insert as a direct drop-in for compatible Top Notch toolholders.

This insert is suited for threading operations in general metalworking, tool and die, and production turning environments. It handles a wide pitch range, making it practical for both fine and coarse thread applications in a single insert style. The KC730 grade with TiN coating performs on material grades C2, C3, and C4, which correspond to cast irons, nonferrous metals, and heat-resistant alloys. Right-hand cutting geometry makes it appropriate for standard right-hand thread cutting on conventional and CNC lathes.

Key Features

• Carbide substrate with PVD-applied Titanium Nitride (TiN) finish for wear resistance
• Partial profile 60-degree thread form covers both internal and external threads in a single insert
• External pitch range: 0.60 to 2.50 mm and 10 to 44 TPI
• Internal pitch range: 1.00 to 2.50 mm and 9 to 24 TPI
• Right-hand insert geometry for standard thread cutting direction
• Top Notch series insert size 3 for use with compatible Top Notch toolholders

Compatibility

Designed for use with KENNAMETAL Top Notch series toolholders that accept insert size 3. Compatible with material grades C2, C3, and C4 workpiece materials.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and the toolholder is secure before seating or removing the insert. Use the correct Top Notch clamping screw and torque it according to the toolholder manufacturer specifications. Inspect the insert seat and clamping pocket for chips or debris before installation to ensure proper seating and accurate thread geometry.