Kennametal 1743738 Laydown Threading Insert 18 Tpi Unj

Product Description

The KENNAMETAL 1743738 is a solid carbide laydown threading insert designed for external UNJ thread forms at 18 threads per inch (TPI). Manufactured to ISO code LT16ER18UNJ with a KC5025 grade substrate and PVD-applied TiAlN coating, this insert delivers wear resistance and thermal stability when threading steel, stainless steel, cast iron, superalloys, and titanium. The ER insert style and right-hand cutting orientation make it a standard choice for CNC lathe and turning center threading operations where UNJ thread geometry is required. It features a 3/8 inch inscribed circle and a thickness of 0.1430 inches (3.44 mm).

This insert is intended for precision external threading applications on CNC turning centers in industrial manufacturing environments. It is suited for aerospace, medical, and general machining work where UNJ thread standards are specified. The KC5025 grade with TiAlN coating is engineered for interrupted and continuous threading passes on ferrous and difficult-to-machine alloys, including superalloys and titanium. Machinists and CNC operators working to tight thread tolerances on right-hand external profiles will find this insert compatible with standard LT16 toolholders designed for the ER insert style.

Key Features

• ISO code LT16ER18UNJ with KC5025 solid carbide grade for high-performance threading
• PVD TiAlN coating for improved heat resistance and extended tool life
• Right-hand external UNJ thread form at 18 TPI
• 3/8 inch (9.53 mm) inscribed circle with ER insert style
• Thickness of 0.1430 inches (3.44 mm) for precise laydown seating
• Suitable for steel, stainless steel, cast iron, superalloys, and titanium workpiece materials

Compatibility

Designed for use in LT16-style threading toolholders accepting ER insert geometry. Consult KENNAMETAL toolholder documentation to confirm pocket and clamping compatibility before installation.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician with the machine spindle fully stopped and power isolated. Seat the insert firmly in the toolholder pocket and secure the clamping screw to the toolholder manufacturer's specified procedure before running. Inspect the insert seat and clamping components for debris or wear before each insert change. Minimum order quantity for this item is 10 units; package quantity is 1.