Drill bit shank in drills meant to reach into very tight spaces, and threaded countersink cutters are widely used (along with finely adjustable depth stops) to create holes which put a matching rivet directly flush with the surface. Drill bit shank The shank is the end of a drill bit grasped by the chuck of a drill. The cutting edges of the drill bit contact the workpiece, and are connected via the shaft with the shank, which fits into the chuck. In many cases a general-purpose arrangement is used, such as a bit with cylindrical shaft and shank in a three-jaw chuck which
Drill bit metric and imperial sized drill bits alongside the required screw tap sizes. There are also certain specialized drill bits that can create holes with a non-circular cross-section. While the term "drill" may refer to either a drilling machine or a drill bit for use in a drilling machine, in this article, for clarity, "drill bit" or "bit" is used throughout to refer to a bit for use in a drilling machine, and "drill" refers always to a drilling machine. Drill bit geometry has several characteristics: Most drill bits for consumer use have straight shanks. For heavy duty drilling in industry,