Kennametal 1112959 Threading Insert NTP4R KC730 Carbide

Product Description

The KENNAMETAL 1112959 is a carbide threading insert designed for precision thread cutting in both internal and external applications. Finished with a Titanium Nitride (TiN) coating applied via PVD process, this insert delivers wear resistance and extended tool life across a range of ferrous and non-ferrous materials. It carries a KC730 manufacturer grade and falls within KENNAMETAL's Top Notch series. The insert produces a partial profile 60-degree thread form and covers an internal pitch range of 2.00 to 6.25 mm (4 to 12 TPI) and an external pitch range of 1.25 to 6.25 mm (4 to 20 TPI). It is suited for right-hand threading operations on CNC lathes and turning centers.

This insert is used in machining environments where consistent thread quality is required across medium to high production runs. Material grades C2, C3, and C4 make it applicable to cast iron, non-ferrous metals, and general-purpose steel threading. The NTP4R insert style fits Top Notch compatible toolholders. It is typically installed by machinists and CNC operators running turning or threading cycles on manual or automated equipment.

Key Features

• KC730 carbide grade with PVD-applied Titanium Nitride (TiN) finish for wear resistance
• Partial profile 60-degree thread form for internal and external threading
• External pitch range: 1.25 to 6.25 mm (4 to 20 TPI)
• Internal pitch range: 2.00 to 6.25 mm (4 to 12 TPI)
• Right-hand cutting orientation
• Top Notch series insert style (NTP4R) for use with compatible toolholders

Compatibility

Designed for use with KENNAMETAL Top Notch series compatible threading toolholders. Insert style NTP4R with insert size 4.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the machine powered down and in a safe, locked-out state before changing inserts. Ensure the toolholder seat and clamping mechanism are clean and free of debris before seating the insert. Follow the toolholder manufacturer's clamping torque guidelines and verify thread depth and form with a thread gauge after the first pass.