Kennametal 1113799 Threading Insert KC850 Carbide 6 Tpi

Product Description

The KENNAMETAL 1113799 is a carbide threading insert designed for cutting Acme threads on both internal and external workpieces. Manufactured in the Top Notch series with a KC850 grade carbide substrate, this insert features a CVD-applied TiC/TiCN/TiN multilayer finish that improves wear resistance and extends tool life in steel and cast iron applications. The insert is right-hand orientation, sized at Insert Size 3, and carries a 6 TPI internal pitch with a 29-degree included angle. It is installed and changed by machinists and CNC lathe operators working in precision threading operations.

This insert is suited for Acme thread-form applications in both internal and external threading operations on CNC and manual lathes. The KC850 grade performs well in continuous and light interrupted cuts on carbon steels, alloy steels, and cast irons classified under material grades C5 and C6. The Top Notch insert system uses a notch-style clamping mechanism that allows quick, repeatable insert indexing without additional tools in most compatible toolholders.

Key Features

• KC850 carbide grade with CVD TiC/TiCN/TiN multilayer coating for extended wear life
• Acme thread form, 29-degree included angle, 6 TPI pitch
• Right-hand cut orientation for standard lathe threading passes
• Suitable for both internal and external thread cutting
• Top Notch series notch-lock clamping for fast, repeatable insert indexing
• Corner radius of 0.005 decimal inches for controlled thread root form

Compatibility

Designed for use in KENNAMETAL Top Notch series threading toolholders that accept Size 3 inserts. Compatible with material grades C5 and C6 workpiece materials as indicated by the manufacturer.

Installation Notes

Threading inserts of this type are installed by machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before changing inserts. Seat the insert firmly into the Top Notch pocket until the notch engages the clamp fully - an improperly seated insert can fracture under cutting loads. Verify insert hand orientation and thread form against the job drawing before beginning a threading cycle.