Kennametal 4175933 Threading Insert NTF2L KCU10 Carbide

Product Description

The KENNAMETAL 4175933 is a carbide threading insert in the Top Notch series, designed for precise thread-cutting on both internal and external applications. The insert features an AlTiN finish applied via PVD coating, which improves wear resistance and tool life at elevated cutting temperatures. It carries a left-hand orientation and a partial profile 60-degree thread standard, making it suitable for cutting unified and metric thread forms within its stated pitch range. External pitch coverage runs from 0.60 to 1.75 mm (14 to 44 TPI), while internal pitch coverage runs from 1.00 to 2.00 mm (12 to 24 TPI). This insert is used by machinists and toolroom technicians in production and job-shop environments.

The 4175933 is suited for threading operations on CNC lathes and manual turning centers where the Top Notch toolholder system is in use. Its left-hand designation makes it appropriate for left-hand thread cutting or for specific toolholder orientations that require reversed cutting geometry. The KCU10 grade carbide substrate combined with PVD AlTiN coating supports use on a range of workpiece materials including steels and stainless alloys at moderate to high cutting speeds. Install size is 2, consistent with standard Top Notch insert pockets of that size class.

Key Features

• Carbide substrate with PVD-applied AlTiN coating for extended tool life and thermal resistance
• Partial profile 60-degree thread form covers both unified and metric thread standards
• 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)
• Left-hand insert orientation for compatible Top Notch toolholders
• Corner radius of 0.08 mm (0.0031 inches) for controlled thread root profile

Compatibility

Designed for use in Kennametal Top Notch series toolholders accepting insert size 2. Verify toolholder hand orientation matches this left-hand insert before installation.

Installation Notes

Threading inserts should be installed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before seating or replacing any insert. Confirm the insert pocket and clamping screw are free of chips and debris before seating the insert. Do not exceed the toolholder torque specification listed in the toolholder documentation for the clamping screw.