Kennametal 1724563 Threading Insert 40 Tpi Un Carbide

Product Description

The KENNAMETAL 1724563 is a solid carbide laydown threading insert designed for external UN thread turning operations on CNC lathes and threading machines. Manufactured to the LT16ER40UN ISO designation and supplied in the KC5025 grade, this insert features a PVD-applied TiAlN coating that provides thermal resistance and wear protection in demanding cutting conditions. The insert is configured for right-hand cutting geometry and generates 40 threads per inch. With a 3/8 inch inscribed circle and a thickness of 0.1430 inches, it fits standard LT16-series laydown toolholders. Licensed machinists and CNC operators install this type of insert in production threading applications where consistent thread form and tool life are priorities.

This insert is suited for threading steel, stainless steel, cast iron, superalloys, and titanium workpieces in both production and job-shop environments. The KC5025 grade with TiAlN coating is optimized for moderate to high cutting speeds in these material groups, making it applicable across a wide range of external UN threading work on lathes equipped with LT16-compatible laydown toolholding systems. It is sold individually but requires a minimum order quantity of 10 units per order.

Key Features

• ISO designation LT16ER40UN — right-hand external UN thread form at 40 TPI
• KC5025 solid carbide grade with PVD TiAlN coating for extended wear resistance
• 3/8 inch (9.53 mm) inscribed circle fits standard LT16-series laydown holders
• 0.1430 inch (3.44 mm) thickness for precise seating in laydown pockets
• Compatible with steel, stainless steel, cast iron, superalloys, and titanium workpieces
• Hole diameter of 0.1551 inches for secure screw clamping in the toolholder

Compatibility

Designed as an OEM-style replacement threading insert for LT16-series laydown toolholders accepting ER-style inserts with a 3/8 inch inscribed circle. Specific toolholder compatibility should be confirmed against the KENNAMETAL LT16 toolholder lineup.

Installation Notes

Installation is performed by a licensed machinist or CNC tooling technician. Ensure the machine spindle is locked and all motion is stopped before indexing or replacing inserts. Use the appropriate torx or hex key to torque the clamping screw per the toolholder manufacturer specification — do not overtighten, as carbide inserts are brittle. Verify correct seating in the pocket and confirm thread pitch with a thread gauge before resuming production cuts.