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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
skink — skink1 /skingk/, n. any of numerous lizards of the family Scincidae, common in many regions of the Old and New World, typically having flat, smooth, overlapping scales and comprising terrestrial, arboreal, and fossorial species. [1580 90; < L… … Universalium
Henry Burden — (April 22, 1791–January 19, 1871) was an engineer and businessman who built an industrial complex in Troy, New York called the Burden Iron Works that featured the most powerful water wheel in the world.Early lifeHenry Burden was born in Scotland … 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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