Iscar 6000699 Cutoff Insert GTL-3 3.1mm Left Hand Carbide

Product Description

The ISCAR 6000699 is a single-end carbide cutoff insert designed for parting and grooving operations on CNC lathes and turning centers. Built to the GTL-3 style with a 3.1 mm (0.1220 inch) cutting width, this insert is sized for the Self-Grip clamping system, which uses a wedge-style mechanical clamp to secure the insert without additional fasteners. The IC20 carbide grade is uncoated and suited for cutting non-ferrous and cast iron workpiece materials requiring a sharp, free-cutting edge. Relief angle is 7 degrees. Corner radius is 0.20 mm (0.0079 inch).

This insert is specified for cut-off applications in light to medium turning operations. The left-hand lead angle of 8 degrees directs cutting forces and chip flow toward the chuck, which helps control chip evacuation in through-cuts and face grooving. It is a common choice for machinists and tool-room techs running bar-feed lathes where consistent parting performance and insert repeatability matter. The uncoated bright finish supports applications where coating additives would interfere with surface finish or material compatibility.

Key Features

• GTL-3 insert style with 3.1 mm cutting width for standard cutoff toolholders in the Self-Grip series
• Left-hand orientation with 8-degree lead angle for controlled chip flow toward the spindle
• IC20 uncoated carbide grade rated for C2 and C3 material group cutting applications
• 0.20 mm corner radius for a clean parting edge with minimal burr
• Single-end insert design with clamp-style holding method for rigid, repeatable seating
• Bright/uncoated finish with 7-degree relief angle for low-friction, sharp-edge cutting

Compatibility

Designed as a direct-fit replacement insert for ISCAR Self-Grip series cutoff toolholders accepting GTL-3 style inserts with a size-3 seat. Confirm toolholder insert seat size and style designation before ordering.

Installation Notes

Insert installation should be performed by a qualified machinist or tooling technician with the machine powered off and the spindle locked. Use the appropriate clamp key or torx driver specified by the toolholder manufacturer to seat the insert fully before torquing the clamp. Inspect the insert pocket for chips or wear before seating a new insert. Never run a loose or improperly seated insert under cutting load.