countersunk bearing face

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Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… … Wikipedia
intaglio — /in tal yoh, tahl /; It. /een tah lyaw/, n., pl. intaglios, It. intagli / tah lyee/, v. n. 1. incised carving, as opposed to carving in relief. 2. ornamentation with a figure or design sunk below the surface. 3. a gem, seal, piece of jewelry, or… … Universalium

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