Sandvik Coromant 5961308 Grooving Insert Corothread 266

Product Description

The SANDVIK COROMANT 5961308 is a solid carbide grooving insert designed for threading and grooving operations on CNC lathes and turning centers. Part of the CoroThread 266 series, this insert features a TiCrAlN/TiN PVD coating that provides wear resistance and heat tolerance during high-speed cutting passes. It carries a 1.3 mm cutting width, a maximum depth of cut of 1.6 mm, and a left-hand orientation. Manufacturer grade 1135 is matched to the PVD coating for use on a range of workpiece materials. Machinists and CNC operators install this insert as a direct replacement in compatible CoroThread 266 toolholders.

This insert is suited for threading and grooving applications on small-diameter workpieces where precise groove geometry and controlled chip flow are required. The C chip breaker geometry and neutral rake angle support consistent chip formation across a variety of materials. The insert size designation of 0.375 and seat size of 0.375 make it compatible with standard CoroThread 266 insert seats in production turning environments, including both job shop and high-volume manufacturing settings.

Key Features

• Solid carbide substrate with TiCrAlN/TiN PVD coating for improved wear resistance
• 1.3 mm cutting width and 1.6 mm maximum depth of cut for small-groove applications
• Left-hand cutting orientation
• C chip breaker geometry with neutral rake angle for controlled chip flow
• ISO code 254LG-16CC01-130 1135 for cross-reference and toolholder matching
• Multi-use insert suitable for repeated indexing within compatible holders

Compatibility

Designed for use in CoroThread 266 series toolholders with an insert seat size of 0.375. ISO code 254LG-16CC01-130 1135 can be used to verify fitment with compatible holders and insert seats.

Installation Notes

Insert installation and indexing should be performed by a qualified machinist with the spindle powered down and the machine in a locked-out state per facility lockout/tagout procedures. Use the correct torque wrench and insert-clamping hardware specified for the CoroThread 266 toolholder to avoid seat damage. Inspect the insert seat for chips or debris before seating the new insert. Do not exceed the maximum depth of cut rating for this insert grade.