Counterbore
Counterbore Coun`ter*bore" (koun`t?r-b?r"), v. t. To form a counterbore in, by boring, turning, or drilling; to enlarge, as a hole, by means of a counterbore. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Counterbore — Coun ter*bore ( b?r ), n. 1. A flat bottomed cylindrical enlargement of the mouth of a hole, usually of slight depth, as for receiving a cylindrical screw head. [1913 Webster] 2. A kind of pin drill with the cutting edge or edges normal to the… …   The Collaborative International Dictionary of English

  • Counterbore — A counterbore in a metal plate A counterbore can refer to a cylindrical flat bottomed hole, which enlarges another hole, or the tool used to create that feature. A spot face is a very shallow counterbore. A counterbore hole is used when a… …   Wikipedia

  • counterbore — 1. noun a) A cylindrical recess, typically machined around a hole to admit a screw so that it sits flush with a surface. b) The tool with which a counterbore is machined …   Wiktionary

  • counterbore — noun 1》 a drilled hole which has a wider section at the top. 2》 a drill whose bit has a uniform smaller diameter near the tip, for drilling counterbores. verb drill a counterbore in …   English new terms dictionary

  • counterbore — counterborer, n. /kown teuhr bawr , bohr ; kown teuhr bawr , bohr /, n., v., counterbored, counterboring. n. 1. a tool for enlarging a drilled hole for a portion of its length, as to permit sinking a screw head. 2. the portion of the hole so… …   Universalium

  • counterbore — coun·ter·bore …   English syllables

  • counterbore — Enlarging a hole to a certain depth …   Dictionary of automotive terms

  • counterbore — noun a bit for enlarging the upper part of a hole • Syn: ↑countersink, ↑countersink bit • Hypernyms: ↑bit …   Useful english dictionary

  • Butt joint — For the geometry in welding, see Butt joint (welding). A butt joint is a joinery technique in which two members are joined by simply butting them together. The butt joint is the simplest joint to make since it merely involves cutting the members… …   Wikipedia

  • Crankset — A Shimano Deore right crankset, showing crank arm, spider, three chainrings and chainring guard …   Wikipedia

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