Kennametal 1724737 Threading Insert 16 Tpi 3/8 in Ic Un

Product Description

The KENNAMETAL 1724737 is a laydown threading insert designed for external UN thread turning operations on CNC lathes and threading machines. Manufactured from solid carbide with a PVD-applied TiAlN coating, this insert carries the KC5025 grade designation and is built to handle right-hand external threading at 16 threads per inch. The 3/8-inch (9.53 mm) inscribed circle and 0.1430-inch thickness conform to the LT16ER16UN ISO profile, making it a direct-fit insert for compatible toolholders. Machinists and CNC operators working in production threading environments install this part for consistent thread form and long tool life across demanding workpiece materials.

This insert is suited for threading steel, stainless steel, cast iron, superalloys, and titanium. It performs in both roughing and finishing threading passes on external UN-profile threads at 16 TPI. The TiAlN PVD coating resists heat and wear at elevated cutting speeds, making it appropriate for higher-productivity threading cycles in job shop and production settings. The ER insert style seats in standard LT-style laydown threading toolholders designed for this insert geometry.

Key Features

• KC5025 carbide grade with PVD TiAlN coating for wear and heat resistance
• Right-hand external UN thread profile at 16 TPI
• 3/8-inch inscribed circle (9.53 mm) in LT16ER16UN ISO profile
• Insert thickness of 0.1430 inches (3.44 mm) for precise laydown seating
• Hole diameter of 0.1551 inches (3.94 mm) for secure clamping in compatible holders
• Compatible workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium

Compatibility

Designed for use in LT-style laydown threading toolholders accepting the LT16ER insert size. Compatible workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium as specified by the manufacturer.

Installation Notes

Installation is performed by CNC machinists or tool-room technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert fully against the toolholder pocket and torque the clamping screw per the toolholder manufacturer specification. Inspect the insert seating pocket for chips or debris before installation to avoid insert rocking or premature edge failure.