counterbore definition

  • noun:
    • A cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface.
    • The tool with which a counterbore is machined.
    • A flat-bottomed cylindrical enhancement of lips of a hole, frequently of minor level, as for receiving a cylindrical screw head.
    • A kind of pin drill utilizing the cutting edge or sides normal towards axis; -- used for enlarging a hole, and for developing a flat-bottomed recess at its mouth.
    • A tool-holder or tool-bar for a drilling-machine.
    • something for boring away a portion of a hole to a bigger diameter.
    • An enlarged area of a drilled opening, designed for the purpose of getting the cylindrical head of a screw or some similar item.
    • a little for enlarging the upper part of a hole
    • A cylindrical recess, typically machined around a hole to acknowledge a screw so that it sits flush with a surface.
    • The tool with which a counterbore is machined.
    • A flat-bottomed cylindrical growth of the lips of a hole, usually of minor depth, as for getting a cylindrical screw mind.
    • A kind of pin drill using innovative or sides normal into the axis; -- useful for enlarging a hole, and for creating a flat-bottomed recess at its mouth.
    • A tool-holder or tool-bar for a drilling-machine.
    • A tool for boring on a percentage of a hole to a more substantial diameter.
    • An enlarged area of a drilled opening, made for the objective of getting the cylindrical head of a screw or some similar object.
    • quite for enlarging the top of part of a hole
  • verb:
    • generate such a cylindrical recess.
    • to generate such a cylindrical recess.
  • verb-transitive:
    • To form a counterbore in, by boring, switching, or drilling; to expand, as a hole, in the form of a counterbore.
    • To form a counterbore in, by boring, switching, or drilling; to enlarge, as a hole, by means of a counterbore.
  • others:
    • To bore completely (a hole) to a larger diameter for confirmed depth.
    • To bore on (a hole) to a bigger diameter for confirmed depth.

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