Kennametal 1113559 Threading Insert 16 Tpi Carbide K68

Product Description

The KENNAMETAL 1113559 is a carbide threading insert designed for external thread cutting on CNC lathes and turning centers. Built to the NJ insert style in the Top Notch series, it carries a K68 manufacturer grade with an uncoated bright finish, making it well suited for applications where coating-free cutting edges are preferred for thread form accuracy. The insert cuts right-hand external threads at 16 TPI with a 60-degree included angle conforming to UNJ thread standards. Material grade C3 carbide provides the hardness and wear resistance needed for consistent thread form across production runs.

This insert is used in external threading operations on lathes and turning centers, typically in aerospace, military, and high-precision industrial environments where UNJ thread standards are specified. The NJ insert style mounts in compatible Top Notch toolholders. Insert size 3010 governs toolholder selection. It is installed and changed by machinists and CNC operators in job shop and production environments handling precision threaded components.

Key Features

• K68 carbide grade with bright uncoated finish for precise thread form geometry
• 16 TPI external pitch, 60-degree included angle, UNJ thread standard
• Right-hand cutting orientation for standard external threading operations
• Corner radius of 0.0098 inches (0.25 mm) for controlled root profile
• Top Notch series NJ insert style for secure, repeatable seating in compatible holders
• Insert size 3010 with tip-to-top height of 0.0980 inches for consistent depth reference

Compatibility

Designed for use in Top Notch series toolholders accepting NJ-style insert size 3010. Confirm toolholder compatibility with the NJ insert geometry before ordering.

Installation Notes

Insert changes must be performed with the machine fully stopped and all axes at a safe position. Use the appropriate Torx or insert-clamping wrench specified by the toolholder manufacturer to seat the insert without over-torquing the clamp screw. Verify thread form with a calibrated thread gauge after the first pass. Handle carbide inserts with care to avoid chipping the cutting edge during installation.