Kennametal 1112942 Threading Insert NTF2L KC730 Carbide

Product Description

The KENNAMETAL 1112942 is a left-hand carbide threading insert in the NTF2L style, part of the Top Notch series. It carries a Titanium Nitride (TiN) finish applied via PVD coating process and is manufactured in the KC730 grade. This insert generates partial profile 60-degree threads and handles both internal and external threading operations. It covers an external pitch range of 0.60 to 1.75 mm (14 to 44 TPI) and an internal pitch range of 1.00 to 2.00 mm (12 to 24 TPI). Machinists and CNC operators use this insert for precision thread-turning on lathes where consistent pitch accuracy and tool life are critical.

This insert is suited for threading operations on steel, cast iron, and non-ferrous materials falling within material grades C2, C3, and C4. It is designed for use in Top Notch series toolholders that accept the NTF insert style at insert size 2. The left-hand designation makes it appropriate for left-hand thread forms or specific machine spindle orientations. The partial profile 60-degree geometry covers a broad range of standard metric and inch thread pitches in a single insert, reducing the number of tooling changes required during a threading program.

Key Features

• KC730 carbide grade with PVD-applied Titanium Nitride (TiN) coating for wear resistance
• External pitch range: 0.60 to 1.75 mm (14 to 44 TPI)
• Internal pitch range: 1.00 to 2.00 mm (12 to 24 TPI)
• Partial profile 60-degree thread form covers a wide range of metric and inch standards
• Left-hand insert orientation for matching left-hand thread applications
• Corner radius of 0.08 mm (0.0031 inches) for precise thread root geometry

Compatibility

Designed for use in Top Notch series toolholders that accept NTF-style inserts at insert size 2. Compatible with material grades C2, C3, and C4.

Installation Notes

This insert is installed and changed by machinists or CNC tooling technicians. Always power down and lock out the machine spindle before seating or removing threading inserts. Confirm insert orientation matches the toolholder pocket and verify the clamping mechanism is fully engaged before resuming operation. Do not exceed the pitch range specified for this insert, as doing so risks poor thread form and premature edge failure.