Sandvik Coromant 5857626 Threading Insert Carbide Grade 1135

Product Description

The SANDVIK COROMANT 5857626 is a carbide threading insert from the CoroThread 266 series, designed for internal threading operations on CNC lathes and turning centers. It carries manufacturer grade 1135 with a PVD coating process, delivering wear resistance suited to consistent production threading. The insert profiles a partial profile 55-degree thread form and is configured for right-hand cutting. It carries an ISO code of 266RL16VW01F002E1135 and has a corner radius of 0.23 mm (0.0091 inches) and a thickness of 3.97 mm (0.1563 inches). Machinists and CNC operators install this insert as part of a CoroThread 266 toolholder system for accurate, repeatable internal thread production.

This insert is used in internal threading applications on CNC turning equipment in both production shop and job shop environments. Its partial profile 55-degree geometry makes it suitable for threading operations where a full-form insert is not required or where flexibility across thread pitches is needed. The right-hand orientation and PVD-coated carbide substrate make it appropriate for moderate-to-high cutting speed applications in steel and similar workpiece materials. It is sold individually with a minimum order quantity of one.

Key Features

• Carbide substrate with PVD coating for wear resistance at elevated cutting speeds
• Partial profile 55-degree thread form for flexible internal threading across multiple pitches
• Right-hand cutting orientation
• Corner radius of 0.23 mm (0.0091 inches) for defined thread root geometry
• ISO code 266RL16VW01F002E1135 for direct toolholder system matching
• Part of the CoroThread 266 indexable threading insert platform

Compatibility

Designed for use with SANDVIK COROMANT CoroThread 266 series toolholders that accept the 266RL16VW01F002E insert style. Verify toolholder seat geometry and insert pocket specifications before installation.

Installation Notes

This insert is installed and replaced by a qualified machinist or CNC tooling technician. Ensure the machine spindle is stopped and the toolholder is safely secured before indexing or replacing the insert. Use the appropriate torque wrench per the toolholder manufacturer guidelines when securing the clamping screw — do not overtighten. Confirm insert seating and nose radius alignment before resuming cutting operations.