Robet Charles Imperial Piloted Countersink - 3 Flutes Integral Pilot Straight Shank -1/8 Pilot Diameter - 120° Inclusive Angle - 5/16 Body Diameter

The Robert Charles Imperial Piloted Countersink is a precision tool designed for accurate, repeatable countersinking of pre-drilled holes. Built for both workshop tasks and production runs, this 3-flute countersink features a 1/8" integral pilot, a 120° included angle, and a 5/16" body diameter to deliver clean, professional finishes every time.

• Integral pilot alignment for chatter-free precision: The precision-ground pilot guides the tool and aligns the countersink with the pre-drilled hole, delivering a clean, flush finish with minimal chatter.
• Three-flute design for smooth cutting and swarf evacuation: The 3-flute geometry reduces cutting forces, improves stability, and clears chips efficiently across steel, aluminum, and plastics.
• Robust straight shank with defined measurements: 5/16" body diameter and 1/8" pilot diameter with a 120° included angle provide consistent depth and compatibility with standard countersink setups in both workshops and production environments.

By using this countersink, you gain reliable, repeatable countersinks that reduce rework, improve hole quality, and speed up assembly workflows across materials like steel, aluminum, and plastics. The integrated pilot and 3-flute design minimize tool chatter, deliver a smooth surface finish, and help maintain consistent results whether you're in a hobbyist shop or a high-volume production environment.