Kennametal 1712561 Threading Insert 32 Tpi 1/4 in Ic Carbide

Product Description

The KENNAMETAL 1712561 is a solid carbide laydown threading insert designed for internal UN thread cutting at 32 threads per inch (TPI). Carrying the ISO code LT11NR32UNCB, it is ground to right-hand orientation and coated with TiAlN via a PVD process for extended tool life under high-heat cutting conditions. The insert measures 1/4 inch (6.35 mm) inscribed circle and 0.1260 inches (3.04 mm) thick. It features a CB chipbreaker geometry optimized for consistent chip control during threading operations. Machinists and CNC lathe operators working in production and job-shop environments will find this insert suited to demanding threading cycles.

This insert is intended for internal threading applications on lathes and turning centers where UN-standard thread forms at 32 TPI are required. Primary workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium. The NR insert style and size code 11 are standard laydown configurations compatible with appropriate KENNAMETAL LT-series toolholders. Typical use cases include threading bores in hydraulic fittings, fastener components, and precision machined housings across aerospace, energy, and general manufacturing sectors.

Key Features

• Solid carbide substrate in KENNAMETAL KC5025 grade for toughness and wear resistance across difficult workpiece materials
• TiAlN PVD coating provides thermal barrier and oxidation resistance at elevated cutting speeds
• Right-hand internal UN thread profile at 32 TPI for standard unified national thread forms
• CB chipbreaker geometry supports controlled chip evacuation in internal threading operations
• 1/4 inch inscribed circle with 0.1280 inch hole diameter for positive seating in compatible toolholders
• Cutting edge to theoretical edge length of 0.0470 inches and face-of-insert to tip centerline of 0.0200 inches for precise thread form geometry

Compatibility

Designed for use in KENNAMETAL LT-series laydown threading toolholders that accept size 11, NR-style inserts with a 1/4 inch inscribed circle. Confirmed compatible workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium.

Installation Notes

Installation is performed by qualified machinists or CNC tooling setup technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Use the correct torx or hex key to the toolholder manufacturer's specified clamping procedure - do not overtighten the clamp screw. Verify insert orientation and thread hand before initiating the threading cycle.