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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 ...
Comparison of Phillips and Frearson screw heads. Reed and Prince, also called Frearson, is another historic cross-head screw configuration. The cross in the screw head is sharper and less rounded than a Phillips, and the bit has 45° flukes and a sharper, pointed end. Also, the Phillips screw slot is not as deep as the Reed and Prince slot.
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
Date/Time Thumbnail Dimensions User Comment; current: 14:15, 26 February 2024: 512 × 512 (204 bytes): Andrew Pertsev: Reverted to version as of 09:13, 27 January 2024 (UTC)
The Phillips Screw Company owns the licensed product that is the Mortorq spiral drive system. The Phillips Screw Company must inspect and approve any punches, bits, and screws before they are cleared for production. Along with this "all licensees must submit samples regularly to ensure that the strict quality standards are maintained". [35]
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