Sandvik Coromant 5758033 Threading Insert 4 Tpi 1/2 in Ic

Product Description

The SANDVIK COROMANT 5758033 is a laydown threading insert designed for external UN thread cutting on CNC lathes and turning centers. Part of the CoroThread 266 series, it is manufactured from solid carbide with a PVD-applied TiAlN and TiCrAlN dual-layer coating for extended tool life in demanding threading applications. The insert cuts right-hand external UN threads at 4 threads per inch (TPI) and features a 1/2 inch (12.70 mm) inscribed circle with a 60-degree included angle. A single tooth per side and chipbreaker style A provide predictable chip control. Manufacturer grade 1125 suits a broad range of workpiece materials.

This insert is used in external threading operations on ferrous and non-ferrous materials in general machining, maintenance, and production environments. The CoroThread 266 insert style 266 fits compatible CoroThread 266 toolholders. Typical applications include threading shafts, bolts, and externally threaded components where UN thread form accuracy is required. The right-hand configuration suits standard lathe rotation. This insert is handled and installed by machinists and CNC programmers in job shop, OEM production, and maintenance-repair-overhaul settings.

Key Features

• Solid carbide substrate with PVD-applied TiAlN and TiCrAlN dual coating for wear resistance
• Right-hand external UN thread form at 4 TPI with 60-degree included angle
• 1/2 inch inscribed circle (12.70 mm) for stable seating in CoroThread 266 holders
• Chipbreaker style A supports controlled chip formation during threading passes
• Manufacturer grade 1125 provides a balance of hardness and toughness for threading cuts
• Catalog number 266RG-22V501A0402E 1125 cross-references directly to SANDVIK COROMANT documentation

Compatibility

Designed for use with SANDVIK COROMANT CoroThread 266 series toolholders that accept insert size code 22 laydown threading inserts. Verify holder compatibility against SANDVIK COROMANT CoroThread 266 toolholder specifications before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the turret is locked before seating or removing the insert. Use the correct Torx or hex key specified for the CoroThread 266 clamping screw and do not exceed the clamping torque range indicated in the toolholder documentation. Inspect the insert pocket for chips or debris before seating the new insert to ensure proper contact and thread form accuracy.