Kennametal 1113816 Threading Insert KC850 Carbide

Product Description

The KENNAMETAL 1113816 is a carbide threading insert designed for precision thread-cutting operations on both internal and external workpieces. Manufactured in the KC850 grade with a CVD-applied TiC/TiCN/TiN multilayer finish, this insert handles a broad pitch range: 1.25 to 4.00 mm (6 to 20 TPI) for external threads and 2.00 to 5.00 mm (5 to 12 TPI) for internal threads. The partial profile 60-degree included angle makes it suitable for a wide range of thread forms without requiring a dedicated insert for each pitch. It is a left-hand insert in the Top Notch series, sized at Insert Size 3. Machinists and CNC operators in precision manufacturing and metalworking environments install this insert on compatible Top Notch toolholders.

This insert is used in turning center and lathe applications where both internal and external threading passes are required. The partial profile geometry allows a single insert to cut multiple pitches within its rated range, reducing tooling inventory. The KC850 carbide grade with CVD coating provides wear resistance and thermal stability suited for threading steel and alloy workpieces. It is appropriate for production threading in job shop and industrial manufacturing settings where consistent thread quality and insert life are priorities.

Key Features

• KC850 carbide grade with CVD TiC/TiCN/TiN multilayer coating for wear and heat resistance
• Partial profile 60-degree included angle cuts multiple pitches without dedicated per-pitch tooling
• 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)
• Left-hand insert orientation in the Top Notch series
• Corner radius of 0.17 mm (0.0065 inches) for controlled thread root form

Compatibility

Designed for use with Top Notch series threading toolholders compatible with Insert Size 3 left-hand inserts. Thread type coverage includes both internal and external applications with a partial profile 60-degree thread standard.

Installation Notes

This insert is installed and replaced by qualified machinists or CNC tooling technicians. Power down and lock out the machine before seating or removing inserts. Use the correct torque wrench and clamping screw specified for the Top Notch toolholder to avoid insert movement or breakage during threading passes. Do not exceed the pitch range stated for this insert, as out-of-range use will damage the cutting edge and produce non-conforming threads.