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Originally named Allen Manufacturing Company, the business produced hexagonal set screws and wrenches to fasten them. The terms "Allen wrench" (American English) and "Allen key" (British English) [3] are derived from the Allen brand name and refer to the generic product category "hex keys".
A hex key (also, hex wrench, Allen key and Allen wrench or Inbus) is a simple driver for bolts or screws that have heads with internal hexagonal recesses . Hex keys are formed from a single piece of hard hexagonal steel rod, having blunt ends that fit snugly into similarly shaped screw sockets.
'Wrench' is derived from Middle English wrench, from Old English wrenċ, from Proto-Germanic *wrankiz ("a turning, twisting"). The oldest recorded use dates to 1794. 'Spanner' came into use in the 1630s, referring to the tool for winding the spring of a wheel-lock firearm.
History. Wrenches in the form of sockets—that is, a female driver to envelop the male head of a fastener—have existed for centuries. Early examples include the keys used to wind clocks since the Middle Ages. The heads and sockets were typically square; hex heads eventually became more common starting in the 20th century.
The hex socket screw drive has a hexagonal recess and may be driven by a hex wrench, also known as an Allen wrench, Allen key, hex key, or inbus as well as by a hex screwdriver (also known as a hex driver) or bit. Tamper-resistant versions with a pin in the recess are available.
Torx (pronounced / tɔːrks /) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 [1] by Camcar Textron. [a] A popular generic name for the drive is star, as in star screwdriver or star bits. The official generic name, standardized by the International Organization for Standardization as ...
Screwdriver with rubber handle. The tool used to drive a slotted screw head is called a standard, common blade, flat-blade, slot-head, straight, flat, flat-tip, [6] or " flat-head " [7] screwdriver. This last usage can be confusing, because the term flat-head also describes a screw with a flat top, designed to install in a countersunk hole.
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Steve Broy (born April 1, 1958), also known by the stage names Dr. Heathen Scum and Pope Heathen Scum, is an American musician, best known as a founding member and current bassist of the heavy metal band the Mentors. Broy has also collaborated in related bands and released solo records under the Dr. Heathen Scum moniker.
Screw. An assortment of screws, and a US quarter for size comparison. A wood screw: a) head; b) non-threaded shank; c) threaded shank; d) tip. The six classical simple machines. A screw is an externally helical threaded fastener capable of being tightened or released by a twisting force ( torque) to the head. The most common uses of screws are ...