COUNTERSINK

Countersink

A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common use is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the surrounding material. A countersink may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.

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countersink

Noun

  1. a conical recess, typically machined around a hole to admit a screw so that it sits flush with a surface.

Verb

  1. To create such a conical recess.
    to countersink a hole for a screw
  2. To cause to sink even with or below the surface.
    to countersink a screw or bolt into woodwork


The above text is a snippet from Wiktionary: countersink
and as such is available under the Creative Commons Attribution/Share-Alike License.

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