Kennametal 1743970 Laydown Threading Insert 14 Tpi Npt

Product Description

The KENNAMETAL 1743970 is a solid carbide laydown threading insert designed for cutting internal NPT threads on CNC lathes and threading machines. Running the KC5025 grade with a PVD-applied TiAlN coating, this insert handles right-hand internal threading at 14 threads per inch. The insert follows ISO code LT16NR14NPT and features a 3/8-inch (9.53 mm) inscribed circle and a thickness of 0.1430 inches (3.44 mm). The TiAlN finish provides heat and wear resistance suited to interrupted cuts and continuous threading passes on hard or abrasive materials.

This insert is intended for production and job-shop threading operations on steel, stainless steel, cast iron, superalloys, and titanium. It fits standard NR-style toolholders accepting size 16 inserts and is suited to applications where consistent NPT thread form and finish are required. The right-hand cutting geometry and internal thread configuration make it a direct fit for pipe-thread programs on CNC turning centers targeting 3/8-inch NPT bore profiles.

Key Features

• Solid carbide substrate with KC5025 manufacturer grade for toughness and edge retention
• PVD TiAlN coating for thermal resistance and extended tool life on ferrous and superalloy workpieces
• 14 TPI NPT internal thread form, right-hand cut
• Insert size code 16 with 3/8-inch inscribed circle and 0.1430-inch thickness
• Hole diameter of 0.1551 inches for standard screw-lock toolholder mounting
• Compatible workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium

Compatibility

Designed for NR-style insert seats accepting size 16 laydown threading inserts. Confirmed compatible workpiece materials are steel, stainless steel, cast iron, superalloys, and titanium.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the toolholder is clean and undamaged before seating the insert. Torque the clamping screw to the toolholder manufacturer specification using the appropriate Torx or hex key. Verify thread-form alignment and programmed pitch before taking the first threading pass.