Kennametal 1112958 Threading Insert NTP3R KC730 Carbide

Product Description

The KENNAMETAL 1112958 is a carbide threading insert in the Top Notch series, designed for precision thread cutting on both internal and external applications. Manufactured to an NTP3R insert style with a KC730 grade carbide substrate, this insert features a PVD-applied Titanium Nitride (TiN) finish that promotes wear resistance and extended tool life in demanding threading operations. The partial profile 60-degree included angle supports a wide pitch range, covering external pitches from 1.25 to 4.00 mm (6 to 20 TPI) and internal pitches from 2.00 to 5.00 mm (5 to 12 TPI). It is sized for use in compatible Top Notch toolholders and is intended for installation by machinists and CNC operators working in production or job shop environments.

This insert is suited for threading ferrous and non-ferrous materials falling within material grades C2, C3, and C4. Typical applications include cutting unified, metric, and other 60-degree thread forms on lathes and turning centers in both job shop and production machining settings. Its right-hand orientation makes it the standard choice for conventional thread cutting cycles. The Top Notch series platform is widely used in high-volume threading where consistent insert seating and repeatable performance are required.

Key Features

• Carbide substrate with PVD Titanium Nitride (TiN) coating for improved wear resistance
• Partial profile 60-degree included angle covers both metric and inch pitch ranges
• External pitch range: 1.25 to 4.00 mm (6 to 20 TPI)
• Internal pitch range: 2.00 to 5.00 mm (5 to 12 TPI)
• Right-hand insert orientation for standard threading operations
• Top Notch series insert size 3 for use with compatible Top Notch toolholders

Compatibility

Designed as an OEM-style replacement and standard production insert for Top Notch series insert size 3 threading toolholders accepting NTP3R style inserts with a 60-degree partial profile geometry.

Installation Notes

Threading inserts of this type are installed and replaced by qualified machinists or CNC tooling technicians. Power down or engage the machine stop before changing inserts, and follow the toolholder manufacturer's torque and clamping procedures. Handle carbide inserts with care to avoid chipping cutting edges. Confirm insert orientation and seating in the pocket before resuming cutting operations.