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In Japan, the male sizes are often designated as DTC-20, DTC-27, DTC-40 (discontinued) and DTC-45 corresponding to a respective screw head size of 3.2 mm, 4.6 mm, 6.4 mm and 7.7 mm; with the size of the screw measured across the widest portion of the mating part of the head. The most common sizes in use for consumer electronics are DTC-20 and ...
Printable version; Page information; ... nominally 512 × 512 pixels, file size: 230 bytes) ... Description=Diagram of a screw head - Philips/Slotted Combo ...
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 ...
In 1913, Woolley and Meredith defined them like Anthony, but gave the following dimensions: hex head cap screws up to and including 7 ⁄ 16 inch (11.1125 mm) have a head that is 3 ⁄ 16 inch (4.7625 mm) larger than the shank diameter; screws greater than 1 ⁄ 2 inch (12.7 mm) in diameter have a head that is 1 ⁄ 4 inch (6.35 mm) larger than ...
In the early 1930s American Henry F. Phillips popularized the Phillips-head screw, with a cross-shaped internal drive. [27] Later improved -head screws were developed, more compatible with screwdrivers not of the exactly right head size: Pozidriv and Supadriv. Phillips screws and screwdrivers are to some extent compatible with those for the ...
Printable version; Page information ... nominally 512 × 512 pixels, file size: 350 ... Description=Diagram of a screw head - Phillips II drive. Geometry is ...
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Printable version; Page information; ... nominally 512 × 512 pixels, file size: 204 bytes) ... Diagram of a screw head - Phillips: Date: 14 July 2009: Source: Own work:
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