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The Phillips/square screw drive, also known as the Quadrex, Pozisquare screw drive, is a combination of the Phillips and Robertson screw drives. While a standard Phillips or Robertson tool can be used, there is also a dedicated tool for it that increases the surface area between the tool and the fastener so it can handle more torque.
Phillips screw head. Henry Frank Phillips (June 4, 1889 – April 13, 1958) was an American businessman from Portland, Oregon. The Phillips-head ("crosshead") screw and screwdriver are named after him. [1] The importance of the crosshead screw design lies in its self-centering property, useful on automated production lines that use powered ...
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They are usually made of low grade steel, have a slot or Phillips drive, and are used to join sheet metal parts using a hex or square nut. [12] plow bolt: plough bolt: A plow bolt is bolt similar to a carriage bolt, except the head is flat or concave, and the underside of the head is a cone designed to fit in a countersunk recess.
It seems to me from some reading that there is a relatively new standard ISO 8764 that specifies "Screwdrivers for cross-recessed head screws", and apparently the latest revision of this standard specifies a driver that is designed to be able to successfully drive both traditional Phillips and traditional JIS fasteners.
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Date/Time Thumbnail Dimensions User Comment; current: 20:28, 2 July 2024: 512 × 512 (350 bytes): Andrew Pertsev: correction, svg code reduction: 22:35, 26 January 2024
5 Use of "anchor" and "visible anchor" templates. 2 comments. ... 9 Flathead screwdriver alias. ... 3 comments. 12 Phillips Cam Out. 3 comments. 13 Robertson ...