Drill Bit

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Drill bits are essential tools that create cylindrical holes with circular cross-sections by rotating in a drill and applying torque and axial force. Specialized bits also exist for non-cylindrical shaped holes, including those with square cross-sections. The shank of a drill bit is the portion held by the drill's chuck, while cutting edges are at the other end. Standardized sizes are available, as outlined in the drill bit sizes article, and a comprehensive chart lists metric and imperial sized drill bits alongside tap sizes for screws. To avoid confusion, this article uses "drill bit" or "bit" for the part used in a drilling machine, and "drill" for the machine itself.