Sandvik Coromant 5758235 Threading Insert 7 Tpi 1/2 Inch Ic

Product Description

The SANDVIK COROMANT 5758235 is a solid carbide laydown threading insert engineered for external UN thread cutting. Part of the CoroThread 266 series, it produces right-hand UN threads at 7 threads per inch (TPI) with a 60-degree included angle. The insert features a PVD-applied TiN coating and an A-style chipbreaker to promote controlled chip flow during threading operations. With a 1/2-inch (12.70 mm) inscribed circle and a thickness of 0.2190 inches (5.56 mm), it fits standard 266-series toolholders used in CNC turning and threading applications. Installation is performed by machinists and tool-room technicians on production lathes and turning centers.

This insert is suited for single-point external threading of ferrous and non-ferrous workpieces requiring UN thread forms. The CoroThread 266 platform is commonly used in high-volume production turning environments where consistent thread quality and insert-to-insert repeatability are required. The 7 TPI pitch positions this insert for threading larger-diameter fasteners, pipe fittings, and industrial components. One tooth per side delivers a full thread profile in a single-insert geometry.

Key Features

• Solid carbide substrate with PVD TiN coating for wear resistance and edge integrity
• Right-hand external UN thread form at 7 TPI with 60-degree included angle
• A-style chipbreaker for controlled chip evacuation during threading passes
• 1/2-inch inscribed circle fits standard CoroThread 266 series toolholders
• 0.2190-inch thickness with 0.2244-inch hole diameter for secure insert seating
• Single tooth per side geometry for full UN thread profile

Compatibility

Designed for use with SANDVIK COROMANT CoroThread 266 series toolholders accepting a 22-size insert with a 1/2-inch inscribed circle. Manufacturer catalog number 266RG-22UN01A070M 1020 identifies the exact toolholder pairing. Verify toolholder grade and clamping style before ordering.

Installation Notes

Threading inserts are installed and indexed by qualified machinists or CNC toolroom technicians. Power down and lock out the spindle before changing inserts. Use the correct torx or hex key torque to seat the insert clamp per the toolholder manufacturer specifications — do not overtighten by hand estimation. Confirm thread pitch, hand orientation, and insert size code against the toolholder before mounting.