Kennametal 1743924 Threading Insert 14 Tpi Un Carbide

Product Description

The KENNAMETAL 1743924 is a laydown threading insert designed for single-point threading operations on CNC lathes and turning centers. Manufactured from solid carbide with a PVD-applied TiAlN coating, this insert cuts right-hand internal UN threads at 14 threads per inch (TPI). The KC5025 grade is engineered for threading difficult-to-machine materials, delivering consistent thread form and edge integrity across production runs. With a 3/8-inch inscribed circle and a thickness of 0.1430 inches (3.44 mm), this insert follows the LT16NR14UN ISO designation for laydown-style toolholders. It is installed by machinist and CNC turning professionals in job shops, aerospace, and general manufacturing environments.

This insert is suited for internal UN thread cutting in materials including steel, stainless steel, cast iron, superalloys, and titanium. The laydown seating style provides rigid support in compatible LT-style toolholders, making it appropriate for both roughing and finishing thread passes on through-holes and blind bores. The 14 TPI UN thread form is a common specification in general industrial and mechanical assembly applications. Minimum order quantity is 10 units; packaging contains 1 insert per unit.

Key Features

• Solid carbide construction with PVD TiAlN coating for extended tool life in abrasive and high-temperature cutting conditions
• Cuts right-hand internal UN threads at 14 TPI
• KC5025 grade rated for steel, stainless steel, cast iron, superalloys, and titanium
• Laydown insert style seats securely in LT16-series toolholders for rigid, repeatable thread form
• 3/8-inch inscribed circle with 0.1430-inch thickness for standard LT16 pocket fit
• PVD coating process preserves sharp cutting edge geometry at the insert tip

Compatibility

Designed for use in LT16NR-style laydown threading toolholders. Compatible workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium as specified by the KC5025 grade designation.

Installation Notes

This insert is installed by qualified machinists or CNC turning technicians. Power down and lock out the machine spindle before changing inserts. Use the appropriate torque wrench and insert screw to secure the insert in the toolholder pocket — do not overtighten by hand. Inspect the insert pocket for debris or wear before seating the new insert to ensure proper contact and thread-form accuracy.