Kennametal 1114370 Threading Insert 14 Tpi KC730 Carbide

Product Description

The KENNAMETAL 1114370 is a carbide threading insert designed for external thread cutting operations. Manufactured in the NJK style as part of the Top Notch series, it carries a Titanium Nitride (TiN) finish applied via a PVD coating process. The insert targets UNJ thread standards at 14 TPI with a right-hand cutting orientation and a 60-degree included angle. With a corner radius of 0.0112 inches and a tip-to-top height of 0.1409 inches, the geometry is suited for precision threading on harder materials. Material grades C2, C3, and C4 are within scope for this insert, making it applicable across a range of workpiece hardness levels. Machinists and tooling specialists working on CNC lathes or manual threading operations are the primary users.

This insert is used in external threading applications where UNJ thread form accuracy is required. The Top Notch series is a well-established indexable threading system, and the NJK3012R14 designation indicates the insert size (3012) and pitch (14 TPI). Typical install scenarios include production threading on aerospace, hydraulic, and industrial components where UNJ profiles are specified. The KC730 grade with TiN PVD coating provides wear resistance suited for interrupted cuts and work-hardening alloys commonly encountered in these environments.

Key Features

• 14 TPI external threading geometry for UNJ thread standard
• KC730 carbide grade with PVD-applied Titanium Nitride coating for extended tool life
• Right-hand cutting orientation in NJK insert style
• 60-degree included angle for standard unified thread form
• Top Notch series compatibility for secure, repeatable indexing
• Applicable to material grades C2, C3, and C4

Compatibility

Designed as an OEM-style replacement threading insert for Top Notch series toolholders accepting NJK-style inserts with a 3012 insert size. Specific toolholder compatibility should be verified against the Top Notch series catalog using insert size and style designations.

Installation Notes

Threading inserts should be installed by a qualified machinist or tooling technician. Power down and lock out the machine before indexing or replacing inserts. Use the correct torque wrench per the toolholder manufacturer specifications when securing the clamping screw. Inspect the insert seat and clamping components for wear or debris before seating a new insert to ensure accurate positioning and thread form output.