Sandvik Coromant 5758225 Threading Insert 6 Tpi

Product Description

The SANDVIK COROMANT 5758225 is a laydown threading insert designed for cutting external Stub Acme threads on CNC lathes and threading operations. Built from solid carbide with a PVD-applied TiN coating, it delivers consistent thread form and wear resistance in demanding turning applications. The insert follows a right-hand cutting orientation and produces 6 threads per inch (TPI) with a 60-degree included angle. With a 1/2-inch inscribed circle and a thickness of 0.2190 inches, it seats precisely in compatible CoroThread 266 toolholders. Installation and operation are performed by machinists and CNC lathe operators in metalworking shops.

This insert is suited for external Stub Acme thread turning on a range of ferrous and compatible workpiece materials. Stub Acme threads are commonly used in power transmission components, lead screws, and industrial mechanisms where a standard Acme form is needed with a reduced thread height. The insert belongs to the CoroThread 266 series and carries manufacturer grade 1020, making it appropriate for general-purpose threading at moderate to high cutting speeds where a TiN-coated solid carbide grade is recommended.

Key Features

• Solid carbide substrate with PVD TiN coating for extended tool life
• Right-hand external Stub Acme thread form at 6 TPI
• 60-degree included angle for accurate Stub Acme thread profile
• 1/2-inch inscribed circle with 0.2244-inch mounting hole diameter
• F chipbreaker geometry for controlled chip evacuation
• Part of the CoroThread 266 series for use with compatible 266-series toolholders

Compatibility

Designed for use in CoroThread 266 series toolholders that accept a 22-size insert with a 1/2-inch inscribed circle. The manufacturers catalog number for this insert is 266RG-22SA01F060E 1020. Confirm toolholder compatibility using the CoroThread 266 insert style and size code 22 designation before installation.

Installation Notes

This insert is installed and replaced by qualified machinists or CNC lathe operators. Power down and lock out the machine before changing inserts. Use the correct torque wrench or insert key specified for the toolholder to avoid cracking the carbide. Inspect the insert seat and clamping components for debris or damage before seating the new insert.