Kennametal 1112950 Threading Insert NT4L KC730 Carbide

Product Description

The KENNAMETAL 1112950 is a left-hand carbide threading insert in the NT4L style, designed for both internal and external thread cutting applications. It carries the KC730 manufacturer grade with a Titanium Nitride (TiN) finish applied via PVD coating process. This insert covers a partial profile 60-degree thread form, handling external pitches from 1.25 to 6.25 mm (4 to 20 TPI) and internal pitches from 2.00 to 6.25 mm (4 to 12 TPI). It belongs to Kennametal's Top Notch series and is installed by machinists and CNC lathe operators in production and job-shop threading operations.

This insert is suited for threading operations on steel, cast iron, and non-ferrous materials classified under material grades C2, C3, and C4. The Top Notch series is a common tooling platform used in both manual and CNC turning centers for external and internal thread profiles. The 60-degree included angle makes it compatible with standard UN, metric, and similar thread forms requiring a partial profile geometry. It is appropriate for low-to-medium cutting speeds typical of carbide PVD-coated tooling.

Key Features

• NT4L insert style in the Top Notch series toolholder platform
• KC730 carbide grade with PVD-applied Titanium Nitride finish for wear resistance
• Partial profile 60-degree thread form for internal and external use
• Left-hand cutting orientation
• 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)

Compatibility

Designed for use with Top Notch series toolholders accepting NT insert style. Compatible with material grades C2, C3, and C4 workpiece materials. Suitable for both internal and external partial profile 60-degree threading.

Installation Notes

Installation is performed by machinists servicing CNC or manual turning centers. Power down and lock out the spindle before seating or replacing inserts. Use the appropriate Top Notch series toolholder and torque the insert clamp screw with the correct Torx or hex key per the toolholder manufacturer's specification. Inspect the insert seat and clamp for debris or damage before mounting a new insert.