Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -5/32 Pilot Diameter - 90° Inclusive Angle - 3/8 Body Diameter

The Robet Charles Imperial Piloted Countersink – 3 Flutes Integral Pilot Straight Shank is designed for accurate and consistent countersinking of pre-drilled holes. Featuring a precision ground integral pilot, it ensures perfect alignment and chatter-free cutting, delivering a clean, professional finish every time. The 3-flute design provides smooth cutting action, improved stability, and efficient swarf evacuation, making it ideal for use on a range of materials including steel, aluminium, and plastics.

• Integral pilot with 5/32 in. diameter: The precision-ground integral pilot centers the countersink in the pre-drilled hole, reducing wandering and chatter for consistent depth and a flush, professional finish.
• 3-flute design for smooth cutting and efficient swarf evacuation: The 3-cutting edges reduce vibration, deliver a cleaner surface, and remove material quickly, helping you finish parts faster with fewer passes.
• 90° included angle and 3/8 in. body diameter with straight shank: The 90° countersink angle matches standard fastener heads, while the robust 3/8 in. body diameter and straight shank provide rigidity and secure mounting in common toolholders for reliable, repeatable results.

This countersink is built for reliability in both workshop and production settings. By combining a precise integral pilot, a stable 3-flute geometry, and a durable straight-shank design, it helps you achieve consistent flush seating, reduces rework, and supports efficient, high-quality assemblies across steel, aluminium, and plastics.