Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank - 1/8 Pilot Diameter - 120° Inclusive Angle

The Robet Charles Imperial piloted countersink is built for precise, repeatable countersinking in precision machining. With a 3-flute cutting design and an integral pilot, it delivers accurate hole alignment, smooth cutting action, and reduced chatter, producing clean chamfers on every part.

Designed for aerospace, automotive, and general engineering applications, it maintains tight tolerances to ensure concentric results. The tool features a 1/8" pilot diameter and a 120° inclusive angle, enabling reliable chamfer creation in a single operation and minimizing rework.

• Integral 1/8" pilot for exact hole alignment: The built-in guide centers the countersink on the bore, delivering concentric chamfers and reducing deviations across repeated parts.
• Three-flute design for smooth, efficient cutting: The geometry provides clean cutting action with steady chip removal and minimal vibration, even in tougher materials.
• Tight pilot diameter tolerance for repeatable results: Pilot tolerance of −0.0005" to −0.0015" ensures consistent alignment and concentric countersinks from part to part.

With this countersink, you can expect faster setup, fewer passes, and consistently clean chamfers across batches. The precision pilot and robust geometry help you achieve reliable results from the first part to the last, improving workflow, reducing downtime, and enhancing overall machining performance.