Kennametal 1114374 Threading Insert 18 Tpi Carbide Tin

Product Description

The KENNAMETAL 1114374 is a carbide threading insert designed for external thread cutting operations. Running in the Top Notch series with insert style NJK and grade KC730, it carries a Titanium Nitride (TiN) finish applied via PVD coating process. The insert is configured for right-hand cutting at 18 threads per inch (TPI) with a 60-degree included angle, making it suited for UNJ thread standard work. Material grades C2, C3, and C4 are supported. Licensed machinists and CNC turning specialists install this insert into compatible Top Notch toolholders for precision threading on lathes and turning centers.

This insert fits external threading applications in production and job-shop environments where UNJ thread forms are required. The NJK insert style and 18 TPI pitch make it appropriate for aerospace and precision mechanical applications that call for controlled root radius thread forms. The KC730 grade with PVD TiN coating provides wear resistance suitable for threading steel and similar materials across a range of cutting conditions.

Key Features

• Insert style NJK in the Top Notch series for use with compatible Top Notch toolholders
• KC730 carbide grade with PVD-applied Titanium Nitride coating for extended tool life
• 18 TPI external threading at 60-degree included angle for UNJ thread standard
• Right-hand cutting orientation
• Corner radius of 0.0088 inches (0.22 mm) for controlled thread root geometry
• Compact insert size 3009 with a tip-to-top height of 0.1409 inches (3.58 mm)

Compatibility

Designed for use with KENNAMETAL Top Notch series toolholders that accept NJK-style inserts in size 3009. Confirm toolholder compatibility with KENNAMETAL Top Notch system specifications before ordering.

Installation Notes

Installation should be performed by a qualified machinist or CNC technician. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Use the appropriate torque wrench and clamp hardware specified for the Top Notch toolholder to avoid insert movement or breakage during cutting. Inspect the insert seating pocket for chips or debris before each installation.