Kennametal 1112957 Threading Insert KC730 Carbide Top Notch

Product Description

The KENNAMETAL 1112957 is a carbide threading insert in the Top Notch series, designed for both internal and external thread cutting operations. Finished with a Titanium Nitride (TiN) PVD coating, this right-hand insert handles external pitches from 0.70 to 3.00 mm (8 to 36 TPI) and internal pitches from 1.25 to 3.50 mm (7 to 20 TPI). The included angle is 60 degrees, making it suited for partial profile unified and metric thread forms. It carries a manufacturer grade of KC730 and material grades C2, C3, and C4. Machinists and CNC tooling technicians install this insert in compatible Top Notch toolholders for precision threading on lathes and turning centers.

This insert is used in metalworking environments where consistent thread quality is required across a range of pitches. The NTP2R style supports both internal and external applications in a single insert geometry, reducing tooling changeovers on the shop floor. It is appropriate for production and job-shop turning operations on ferrous and non-ferrous materials within the C2 through C4 material grade range. The insert size is 2, fitting standard Top Notch series toolholders designed for that insert size class.

Key Features

• Carbide substrate with PVD Titanium Nitride (TiN) finish for wear resistance
• External pitch range: 0.70 to 3.00 mm (8 to 36 TPI)
• Internal pitch range: 1.25 to 3.50 mm (7 to 20 TPI)
• Partial profile 60-degree thread form for unified and metric thread cutting
• Right-hand cutting direction, insert size 2
• Corner radius of 0.1 mm (0.004 inches) for controlled thread root geometry

Compatibility

Designed for use with Top Notch series toolholders that accept size 2 NTP-style threading inserts. No additional specific compatible model numbers were provided in the product data.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine before seating or replacing the insert. Ensure the toolholder pocket and clamping surfaces are clean and free of chips before inserting. Follow the toolholder manufacturer's clamping torque guidelines and verify insert seating before resuming cutting operations.