Screw thread — Internal and external threads illustrated using a common nut and bolt. The screw and nut pair can be used to convert torque into linear force. As the screw (or bolt) is rotated, the screw moves along its axis through the fixed nut, or the non… … Wikipedia
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
Screw gun — A screw gun is a tool used to install sheetrock, also known as drywall. Screw guns look like a normal drill although they have a nose as opposed to a chuck. The nose holds an interchangeable 1/4 inch shank bit {commonly known as a tip}. Most… … Wikipedia
Screw anchor — A screw anchor is a fastener that can attach one object to another in situations where screws, nails, adhesives, or other simple fasteners are either impractical or ineffective. Different types have different levels of strength and can be used on … Wikipedia
depth of thread — the distance between the crest and the base of a screw thread measured radially … Useful english dictionary
Sand screw — Sand Sand, n. [AS. sand; akin to D. zand, G. sand, OHG. sant, Icel. sandr, Dan. & Sw. sand, Gr. ?.] 1. Fine particles of stone, esp. of siliceous stone, but not reduced to dust; comminuted stone in the form of loose grains, which are not coherent … The Collaborative International Dictionary of English
banking screw — noun Etymology: from present participle of bank (II) : an adjustable screw in a chronometer escapement for regulating the depth of escape tooth locking … Useful english dictionary
hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… … Universalium
Threading (manufacturing) — Threading is the process of creating a screw thread. More screw threads are produced each year than any other machine element.[1] There are many methods of generating threads, including subtractive methods (many kinds of thread cutting and… … Wikipedia
History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… … Wikipedia
Plastics extrusion — Cross section of a plastic extruder to show the screw Plastics extrusion is a high volume manufacturing process in which raw plastic material is melted and formed into a continuous profile. Extrusion produces items such as pipe/tubing, weather… … Wikipedia