Kennametal 1724420 Threading Insert LT16NRG60 KC5010 Carbide

Product Description

The KENNAMETAL 1724420 is a solid carbide laydown threading insert designed for internal thread-cutting operations on CNC lathes and turning centers. Manufactured to the LT16NRG60 insert style in the KC5010 carbide grade, this insert carries a PVD-applied TiAlN coating for improved wear resistance and tool life at elevated cutting temperatures. It produces a partial profile 60-degree thread form for right-hand internal threading across a pitch range of 14 to 8 threads per inch (1.75 to 3.00 mm pitch). The inscribed circle measures 3/8 inch (9.53 mm) and the insert thickness is 0.1430 inches (3.44 mm). Machinists and CNC tooling technicians install this insert in compatible LT-style threading toolholders on manual or CNC turning equipment.

This insert is suited for internal threading operations in production turning environments, including job shops and high-volume machining cells. The 14-8 TPI range covers common unified and metric-equivalent thread pitches found in hydraulic fittings, pipe threads, and fastener applications. The KC5010 grade with TiAlN PVD coating performs well in steels, stainless steels, and cast irons where thermal resistance and edge retention are priorities. Right-hand cutting geometry makes this insert compatible with conventional lathe rotation for standard internal bore threading.

Key Features

• Solid carbide construction in KENNAMETAL KC5010 grade for consistent edge performance
• PVD TiAlN coating provides thermal and oxidation resistance during high-speed threading
• Partial profile 60-degree thread form cuts a range of thread pitches without changing inserts
• Right-hand internal cutting geometry for standard CNC lathe boring bar applications
• Pitch range of 14-8 TPI (1.75-3.00 mm) covers a broad spectrum of common thread sizes
• Corner radius of 0.0059 inches (0.15 mm) for defined thread root geometry

Compatibility

Designed as an OEM-style replacement threading insert for LT16-style internal threading toolholders used in CNC turning and lathe boring bar applications.

Installation Notes

Installation and replacement of threading inserts should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine before changing inserts. Use the appropriate torx or hex key specified for the toolholder clamp screw, and ensure the insert seats fully and evenly in the pocket before tightening. Inspect the toolholder pocket for chips or damage before seating a new insert.