Kennametal 1113802 Threading Insert 12 Tpi Acme KC850

Product Description

The KENNAMETAL 1113802 is a carbide threading insert designed for cutting Acme threads in both internal and external applications. Running in the Top Notch series, this right-hand insert carries a CVD-applied TiC/TiCN/TiN multilayer finish over a KC850 carbide substrate, which covers material grades C5 and C6. The included angle is 29 degrees, consistent with the Acme thread standard, and the internal pitch is 12 TPI. At a tip-to-top height of 0.1492 inches and a thickness of 0.1949 inches, it fits standard Top Notch toolholders. Licensed machinists and CNC operators are the typical end users for this insert style.

This insert is suited for Acme thread cutting on lathes and CNC turning centers where both internal and external thread profiles are required. The NA insert style and size 3 designation align with Top Notch series tooling setups. The KC850 grade with CVD multilayer coating is well matched to steel and cast-iron workpieces in the C5 and C6 material grade range, making it a common choice for production threading of lead screws, power screws, and similar components in industrial and manufacturing environments.

Key Features

• CVD-applied TiC/TiCN/TiN multilayer coating for wear resistance on C5 and C6 materials
• 29-degree included angle meets Acme thread standard for internal and external profiles
• 12 TPI internal pitch for Acme thread cutting applications
• Right-hand cutting geometry in Top Notch series size 3 format
• Tip-to-top height of 0.1492 inches and corner radius of 0.0280 inches for precise thread form
• KC850 carbide grade balances toughness and wear resistance across a range of cutting conditions

Compatibility

Designed for use with Top Notch series toolholders accepting a size 3 insert. Compatible with both internal and external Acme thread cutting applications. Consult KENNAMETAL Top Notch toolholder documentation to confirm seat and clamp compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate Top Notch clamp and torque the clamping screw per the toolholder manufacturer specification. Inspect the insert seat for chips or debris before installation to ensure proper seating and thread form accuracy.