Kennametal 4175911 Threading Insert NT2R KCU10 Carbide

Product Description

The KENNAMETAL 4175911 is a carbide threading insert in the Top Notch series, designed for precision thread-cutting on both external and internal applications. Running on a PVD-applied AlTiN finish, the insert style is NT2R with a right-hand cutting orientation. It covers an external pitch range of 0.70 to 3.0 mm (8 to 36 TPI) and an internal pitch range of 1.25 to 3.50 mm (7 to 20 TPI), conforming to a partial profile 60-degree thread standard. The included angle is 60 degrees with a corner radius of 0.1 mm (0.0039 inches). This insert is installed by machinists and CNC tooling professionals in production and job-shop environments.

The 4175911 is suited for threading operations on lathes and turning centers where both metric and unified thread pitches are required. The partial profile geometry makes it adaptable across a broad pitch range without requiring a dedicated insert for each thread form. The AlTiN coating provides thermal resistance during high-speed cutting, making it appropriate for ferrous and exotic alloy workpieces. Insert size is 2, and the body thickness is 5.56 mm (0.219 inches). It fits Top Notch series toolholders designed for NT-style inserts.

Key Features

• Carbide substrate with PVD-applied AlTiN finish for thermal and wear resistance
• Partial profile 60-degree thread form covers a wide pitch range without form-specific inserts
• Right-hand cut orientation, NT2R insert style
• External pitch range: 0.70 to 3.0 mm (8 to 36 TPI)
• Internal pitch range: 1.25 to 3.50 mm (7 to 20 TPI)
• Corner radius of 0.1 mm for controlled thread root geometry

Compatibility

Designed for use in Top Notch series toolholders accepting NT2R-style inserts. Fits standard NT insert pockets on compatible turning and threading toolholders.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Use the appropriate torx or clamping key specified for the Top Notch toolholder to achieve correct insert clamping force. Inspect the insert pocket and clamping surfaces for chips or debris before seating a new insert.