countersunk-headed bolt

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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
Countersink — A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common usage 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… … Wikipedia
List of screw drives — Contents 1 Common types 1.1 External types 1.1.1 Square 1.1.2 Hex … Wikipedia
rivet — riveter, n. rivetless, adj. /riv it/, n., v., riveted, riveting or (esp. Brit.) rivetted, rivetting. n. 1. a metal pin for passing through holes in two or more plates or pieces to hold them together, usually made with a head at one end, the other … Universalium

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