Sandvik Coromant 5742060 Threading Insert Un 14 Tpi

Product Description

The SANDVIK COROMANT 5742060 is a solid carbide laydown threading insert designed for right-hand internal UN thread cutting at 14 threads per inch. Part of the T-Max U-Lock series, this insert features a 1/4-inch (6.35 mm) inscribed circle and a thickness of 0.125 inches (3.17 mm). The TiN finish is applied via a PVD coating process, improving wear resistance and edge life during threading operations. It carries a 60-degree included angle and an A-style chipbreaker, making it suited for controlled, repeatable thread form generation on internal bores. Machining professionals and CNC programmers select this insert for precision threading in production environments.

This insert is intended for use in internal UN threading applications on CNC lathes and turning centers. The right-hand orientation and 14 TPI specification make it appropriate for standard UN fastener thread profiles in metalworking operations. It fits T-Max U-Lock compatible toolholders designed for the 166-series insert style. Typical installations include production threading of hydraulic fittings, connectors, and other threaded components requiring consistent UN thread standards. The manufacturer catalog number for this insert is R166.0L-11UN01-140 1020.

Key Features

• Solid carbide substrate with PVD-applied TiN coating for extended wear resistance
• Right-hand internal UN thread geometry at 14 TPI with 60-degree included angle
• 1/4-inch inscribed circle with 0.125-inch thickness for T-Max U-Lock 166-series holders
• A-style chipbreaker for controlled chip formation in internal threading
• Single tooth per side design for precise thread profile engagement
• Manufacturer grade 1020 for consistent performance in standard threading applications

Compatibility

Designed for use with T-Max U-Lock series toolholders accepting 166-series laydown threading inserts with an 11-size insert code.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or removing the insert. Verify the insert is correctly locked in the U-Lock pocket before beginning any threading cycle. Follow the toolholder manufacturer torque and clamping specifications for the 166-series insert seat.