Kennametal 1112949 Threading Insert NT3L KC730 Carbide

Product Description

The KENNAMETAL 1112949 is a carbide threading insert in the NT3L style, designed for precision thread cutting on both internal and external profiles. Coated with Titanium Nitride (TiN) via a PVD process, this insert carries the KC730 grade and falls within material grades C2, C3, and C4. It is engineered for partial profile 60-degree thread forms and is configured for left-hand cutting operations. Insert size is 3, with a thickness of 4.95 mm (0.1949 inches) and a tip-to-top dimension of 2.49 mm (0.098 inches). The corner radius measures 0.17 mm (0.0067 inches). This insert is part of the Top Notch series and is intended for use by machinists and toolroom technicians in production and job-shop environments.

This insert handles a wide pitch range, covering external threading from 1.25 to 4.00 mm pitch (6 to 20 TPI) and internal threading from 2.00 to 5.00 mm pitch (5 to 12 TPI). It is suited for turning centers and CNC lathes where the Top Notch toolholder system is in use. Typical applications include threading ferrous and non-ferrous workpieces in both production runs and custom fabrication. The TiN finish contributes to wear resistance and extended tool life in moderate-to-aggressive threading operations.

Key Features

• KC730 carbide grade with PVD-applied Titanium Nitride (TiN) coating for wear resistance
• Partial profile 60-degree thread form for internal and external threading
• Left-hand cutting geometry in NT3L insert style
• 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)
• Part of the Top Notch series for use with compatible toolholder systems

Compatibility

Designed for use with Top Notch series threading toolholders that accept size 3 NT-style inserts. Confirm toolholder seat and clamp compatibility before installation.

Installation Notes

Threading inserts should be installed by qualified machinists or toolroom personnel. Power down and lock out the machine before changing inserts. Use the appropriate torque wrench for the clamping screw to avoid insert cracking or improper seating — refer to the toolholder manufacturer's specification sheet for fastener torque values. Inspect the insert pocket and clamp for debris or wear before seating the new insert.