Kennametal 1712558 Threading Insert 20 Tpi Solid Carbide KC5025

Product Description

The KENNAMETAL 1712558 is a solid carbide laydown threading insert designed for internal UN thread cutting applications. Carrying the ISO code LT11NR20UNCB, this insert operates at 20 threads per inch (TPI) with a right-hand cutting orientation. It features a TiAlN coating applied via PVD process, which enhances surface hardness and thermal resistance during threading operations. The insert measures 1/4 inch (6.35 mm) inscribed circle and 0.1260 inch (3.04 mm) thick, with a hole diameter of 0.1280 inch. It is intended for use by machinists and CNC lathe operators working on precision threaded components.

This insert is suited for threading steel, stainless steel, cast iron, superalloys, and titanium workpieces. The NR insert style and CB chipbreaker geometry make it appropriate for internal threading operations on CNC lathes and turning centers in both production and job-shop environments. The KC5025 grade is a PVD-coated carbide grade optimized for threading difficult-to-machine materials where edge retention and coating adhesion are critical. Minimum order quantity is 10 units; each package contains 1 insert.

Key Features

• Solid carbide construction with TiAlN PVD coating for extended tool life on hard and abrasive materials
• 20 TPI, right-hand internal UN thread standard
• NR insert style with CB chipbreaker geometry
• 1/4 inch inscribed circle (6.35 mm) with 3.04 mm insert thickness
• ISO code LT11NR20UNCB for direct cross-reference and toolholder matching
• Compatible with primary workpiece materials including steel, stainless steel, cast iron, superalloys, and titanium

Compatibility

Designed for use in toolholders accepting LT11 style laydown threading inserts. Compatible workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium. Verify toolholder seat geometry and clamping requirements before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine before seating or replacing the insert. Ensure the toolholder pocket is clean and free of debris before installing the insert to maintain accurate seating and thread geometry. Do not exceed the recommended cutting parameters for the KC5025 grade as specified in the current KENNAMETAL threading application guide.