Kennametal 1113807 Threading Insert NTF3R KC850 Carbide

Product Description

The KENNAMETAL 1113807 is a carbide threading insert designed for precision thread-cutting operations on CNC lathes and turning centers. Carrying the NTF3R insert style in the KC850 manufacturer grade, this insert features a CVD-applied TiC/TiCN/TiN multilayer finish that enhances wear resistance and extends tool life in demanding threading applications. It covers a partial profile 60-degree thread standard and handles both internal and external threading in a right-hand orientation. The insert size is 3, with a tip-to-top height of 3.58 mm and a corner radius of 0.08 mm. It belongs to the Top Notch series, a widely used system for indexable threading toolholders.

This insert is suited for threading operations on ferrous and non-ferrous materials in both production and job-shop environments. The external pitch range of 0.60 to 2.50 mm (10 to 44 TPI) and internal pitch range of 1.00 to 2.50 mm (9 to 24 TPI) make it appropriate for a broad range of standard thread forms. It is typically installed by CNC machinists and toolroom technicians working on turning applications that require consistent thread geometry and surface finish across high-volume or precision runs.

Key Features

• KC850 carbide grade with CVD-applied TiC/TiCN/TiN multilayer coating for extended wear life
• Covers external pitch 0.60 to 2.50 mm (10 to 44 TPI) and internal pitch 1.00 to 2.50 mm (9 to 24 TPI)
• Partial profile 60-degree thread standard for right-hand internal and external threading
• Top Notch series compatibility for use with standard NTF-style indexable threading toolholders
• Insert size 3 with 0.08 mm corner radius for precise thread form definition
• Material grades C5 and C6 for versatile application across a range of workpiece materials

Compatibility

Designed for use with Top Notch series NTF-style indexable threading toolholders that accept size 3 inserts. Consult toolholder documentation to confirm seat and clamping compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine powered down and the spindle locked before indexing or replacing the insert. Use the appropriate torx or clamping key specified by the toolholder manufacturer to secure the insert — do not overtighten the clamp screw. Inspect the insert seat and clamping mechanism for chips or debris before seating a new insert. Follow the toolholder manufacturer's recommended speeds and feeds for the KC850 grade when setting up threading passes.