Robert Charles Metric Piloted Countersink - 3 Flutes - Integral Pilot - Straight Shank - 10.0mm Pilot Diameter - 30° Inclusive Angle

The Robert Charles Metric Piloted Countersink is a precision cutting tool designed for accurate countersinking of metric pre-drilled holes. It features an integral pilot, a 30° included angle, and a straight shank to deliver clean, concentric countersinks with minimal chatter while maintaining consistent depth control.

The 3-flute design provides smooth cutting and stable performance across a range of materials, including steel, aluminium, and plastics. With a 10.0 mm pilot diameter, this countersink centers the tool precisely to prevent wander, making it ideal for workshop, maintenance, and production machining tasks.

• Integral pilot for precise alignment: The built-in 10.0 mm pilot centers the countersink in metric holes, preventing wandering and delivering concentric, repeatable countersinks.
• 3-flute geometry for stable, smooth cutting: Three flutes enable efficient chip evacuation and steady cutting, reducing vibration and improving surface finish in steel, aluminium, and plastics.
• Straight shank for broad machine compatibility: The straight shank provides reliable grip in standard milling setups, ensuring consistent depth control and easy integration into existing tooling.

This countersink helps you achieve flush, clean holes quickly and reproducibly. The integral pilot reduces misalignment, while the 3-flute design and straight shank support reliable, predictable performance across a variety of materials—from workshop repairs to production runs—giving engineers, machinists, and tradespeople confidence on every job.