Kennametal 1113001 Threading Insert KC730 Carbide 8 Tpi

Product Description

The KENNAMETAL 1113001 is a carbide threading insert designed for external thread cutting operations. It carries the NJ insert style and is manufactured to the UNJ thread standard, making it suited for aerospace and high-precision applications that require controlled root radius threads. The KC730 grade features a Titanium Nitride (TiN) finish applied via PVD coating, which improves wear resistance and extends tool life on a range of workpiece materials. Rated at 8 TPI with a 60-degree included angle, this right-hand insert fits the Top Notch series toolholding system. It is installed by machinists and CNC operators performing external threading passes on turned components.

This insert is intended for external threading on materials corresponding to C2, C3, and C4 material grades, covering cast iron, non-ferrous metals, and non-metallic materials. The Top Notch series is a common platform in production turning environments, found in both manual and CNC lathes. The NJ insert style with a controlled corner radius is particularly relevant when threading to UNJ specifications, which call for a defined root radius rather than a sharp root. Typical applications include threading on aerospace fastener stock, hydraulic fittings, and precision shaft components.

Key Features

• KC730 carbide grade with PVD-applied Titanium Nitride (TiN) coating for wear resistance
• NJ insert style conforming to UNJ thread standard with controlled root radius
• 8 TPI external pitch with 60-degree included angle for standard unified thread forms
• Right-hand cutting orientation for conventional external threading passes
• Top Notch series compatibility for use with corresponding indexable toolholders
• Insert size 3020 with a thickness of 0.1949 inches (4.95 mm)

Compatibility

Designed for use with KENNAMETAL Top Notch series external threading toolholders that accept NJ-style inserts. Confirmed for C2, C3, and C4 material grade classifications per the UNJ thread standard. No additional specific model or system compatibility data was provided in the product source.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. The machine spindle must be stopped and all energy sources locked out before indexing or replacing the insert. Use the appropriate Torx or hex key to seat the insert firmly in the Top Notch pocket without overtightening the clamping screw. Verify insert seating and runout before resuming threading operations, and confirm thread form with a thread gauge on the first pass.