Sandvik Coromant 5758082 Threading Insert 6 Tpi Un

Product Description

The SANDVIK COROMANT 5758082 is a solid carbide laydown threading insert designed for internal UN thread cutting operations. Part of the CoroThread 266 series, it produces right-hand internal UN threads at 6 threads per inch (TPI) with a 60-degree included angle. The insert features a PVD-applied TiN coating for wear resistance and extended tool life in threading applications. With an inscribed circle of 0.5 inches (12.70 mm) and a thickness of 0.2190 inches (5.56 mm), this insert is sized for standard laydown-style toolholders used by machinists and CNC lathe operators in production threading work.

This insert is suited for internal threading operations on CNC lathes and turning centers in both production and job-shop environments. The UN thread standard and 6 TPI specification make it applicable to larger-diameter fastener and fitting threads commonly encountered in industrial, oilfield, and mechanical assembly machining. The A chipbreaker geometry supports controlled chip evacuation in internal bores. It is installed using a 0.2244-inch (5.70 mm) hole diameter mounting configuration consistent with the 266 series insert platform.

Key Features

• Solid carbide substrate with PVD TiN coating for wear resistance in threading operations
• Right-hand internal UN thread geometry at 6 TPI with 60-degree included angle
• CoroThread 266 series insert style 266RL with size code 22
• A chipbreaker for controlled chip flow in internal bore threading
• Inscribed circle of 0.5 inches (12.70 mm) for standard laydown toolholder fitment
• Single tooth per side configuration for precise thread form control

Compatibility

Designed for use with CoroThread 266 series laydown threading toolholders that accept a 22-size insert with a 0.2244-inch mounting hole diameter. Catalog reference number 266RL-22UN01A060M 1020.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. The machine spindle must be fully stopped and the toolholder secured before seating or removing the insert. Use the appropriate torx or hex key specified by the toolholder manufacturer to achieve proper clamping without over-torquing the insert screw. Verify insert orientation and thread hand before initiating any threading cycle.