Lg R200 Dual Display Driver Xp here. Cap, Hex Head Slotted; Cap, Hex Socket; Jack Screw, Hex; Flat Head, Countersunk, Slotted. Socket-Head-Cap-Stainless; Slotted-Set-Screws; Socket-Set. ISO 4026 specifies the characteristics of hexagon socket set screws with flat point and threads from M1,6 up to and including M24 and of product grade A.

Contents • • • • • • • • • • • • Nomenclature [ ] Explained by the geographical and commercial, the term 'hex key“ is best known as in the USA (The “Allen” name is a registered trademark, originated by the Allen Manufacturing Company of Hartford, Connecticut circa 1910, and currently owned by Apex Tool Group, LLC), Inbus in Germany (The term “INBUS” is a registered trademark, originated by the German company Bauer & Schaurte in 1934 and currently owned by INBUS IP GmbH, Breckerfeld, Germany) and Unbrako key or wrench in Scandinavia. The synonym zeta key or wrench refers to the. Garador Garamatic Manual. The term hex-head is sometimes used to refer to this type of drive, but this use is not consistent with its more conventional use referring to external-wrenching hexagons.

In the fastener industry, the terms “socket head” or “hex socket head” are generally used for the driven part of the driver–driven pair. A less common synonym is “ hex”. Advertisement for the Allen Safety Set Screw, a brand of, in the Automobile Trade Directory, January 1913. Extant records suggest (without offering exhaustive documentation) that the idea of a hex socket screw drive was probably conceived as early as the 1860s to the 1890s, but that such screws were probably not manufactured until around 1910. Monotype For Windows.

Rybczynski (2000) describes a flurry of patents for alternative drive types in the 1860s to the 1890s in the US, which are confirmed to include internal-wrenching square and triangle types (that is, square and triangular sockets) ( ), but he explains that these were patented but not manufactured due to the difficulties and expense of doing so at the time., of,,, first commercialized the square socket in 1908, having perfected and patented a manufacturing method (cold-forming, using the right material and the right die design). In 1909–1910, William G. Allen patented a method of screw heads around a hexagonal die ( ). Published advertisements for the 'Allen safety set screw' by the of Hartford, Connecticut, exist from 1910.

Although it is unlikely that Allen was the first person to think of a hex socket drive, his patent for a manufacturing method and his realized product appear to be the first. In his autobiography, the founder of the Standard Pressed Steel Company (SPS; now SPS Technologies, Inc.), Howard T. Hallowell Sr, presents a version of events in which SPS developed a hex socket drive in-house, independently of Allen, circa 1911. From this came the Unbrako line of products. This account from Hallowell does not mention the Allen patent of 1910, nor the Allen safety set screw product line. Hallowell does describe, however, the same inspiration also mentioned in connection with Allen for a wave of adoption of the hex socket head, beginning with and followed. This was an industrial safety campaign, part of the larger, to get headless set screws onto the pulleys and shafts of the that was ubiquitous in factories of the day.