Kennametal 1112956 Threading Insert NTP4L KC730 Carbide

Product Description

The KENNAMETAL 1112956 is a carbide threading insert in the Top Notch series, designed for both internal and external thread cutting operations. Finished with a PVD-applied Titanium Nitride (TiN) coating, this insert handles a 60-degree partial profile thread standard and is configured for left-hand threads. It covers an external pitch range of 1.25 to 6.25 mm (4 to 20 TPI) and an internal pitch range of 2.00 to 6.25 mm (4 to 12 TPI). Manufactured in grade KC730, it falls within material grades C2, C3, and C4. Machinists and CNC operators working in production threading applications will find this insert suited to demanding thread-forming work.

This insert is used in metalworking and machining environments where precise thread profiles are required on both internal bores and external diameters. The NTP4L insert style fits Top Notch series toolholders. It is appropriate for threading operations on steel, alloy steel, and similar materials where KC730 grade carbide with a TiN coating provides wear resistance and edge stability. It is typically installed in CNC lathes or manual threading setups by machinists, tool-and-die technicians, and production shop operators.

Key Features

• KC730 carbide grade with PVD Titanium Nitride coating for wear and heat resistance
• Covers external pitch range of 1.25 to 6.25 mm (4 to 20 TPI)
• Covers internal pitch range of 2.00 to 6.25 mm (4 to 12 TPI)
• 60-degree partial profile thread form for versatile thread-cutting applications
• Left-hand insert configuration (NTP4L style)
• Top Notch series insert for use with compatible Top Notch series toolholders

Compatibility

Designed for use with Top Notch series threading toolholders that accept insert size 4 NTP-style inserts. No additional specific compatible model numbers were provided in the product data.

Installation Notes

Threading inserts of this type are installed and replaced by machinists following standard toolholder lockdown procedures - ensure the machine is fully powered down and spindle is locked before seating or removing the insert. Confirm the insert is fully seated in the pocket and that the clamping mechanism is secure before resuming cuts. Verify left-hand orientation requirements match the threading direction of the operation before setup. Follow shop safety protocols and applicable OSHA machine guarding standards during tooling changes.