Kennametal 1724292 Threading Insert 28 Tpi Un Carbide

Product Description

The KENNAMETAL 1724292 is a solid carbide laydown threading insert designed for external UN thread cutting at 28 threads per inch (TPI). Carrying the ISO code LT16ER28UN and manufacturer grade KC5010, this right-hand insert features a TiAlN coating applied via PVD process, which improves wear resistance and heat tolerance during threading operations. The insert measures 3/8 inches inscribed circle (9.53 mm) and 0.1430 inches thick (3.44 mm). It is intended for use by machinists and CNC operators threading ferrous and high-temperature alloy workpieces where dimensional accuracy and tool life are critical.

This insert is suited for external UN thread turning on lathes and CNC turning centers. The KC5010 grade with TiAlN coating is rated for primary workpiece materials including steel, stainless steel, cast iron, superalloys, and titanium. It is commonly used in production threading applications where consistent thread form and insert-to-insert repeatability are required. The ER-style insert geometry is compatible with standard laydown threading toolholders designed for the LT16 insert size code.

Key Features

• Solid carbide construction with PVD-applied TiAlN coating for extended tool life on hard and abrasive materials
• 28 TPI external UN thread profile, right-hand cutting direction
• ISO code LT16ER28UN with 3/8 inches inscribed circle for accurate toolholder indexing
• KC5010 manufacturer grade rated for steel, stainless steel, cast iron, superalloys, and titanium
• Hole diameter of 0.1551 inches for secure clamping in compatible toolholders
• Cutting edge to theoretical edge length of 0.0240 inches; face of insert to tip centerline of 0.0270 inches

Compatibility

Designed for use in laydown threading toolholders accepting LT16 ER-style inserts. Compatible workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium as stated by the manufacturer.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before indexing or replacing the insert. Use the correct torque wrench and clamp screw for the toolholder to ensure the insert seats flush without rocking. Verify thread pitch and insert orientation against the part drawing before commencing the threading pass.