Counterbore

Noun

Définitions

1.NounA cylindrical recess, typically machined at the mouth of a hole to admit a screw (such as a cap screw) so that the screw sits flush with a surface.

2.NounThe cutter used to cut such a recess. (Also used, at less depth, for spotfacing.)

3.VerbTo create such a cylindrical recess.

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