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  2. British Standard Whitworth - Wikipedia

    en.wikipedia.org/wiki/British_Standard_Whitworth

    The Whitworth 55° angle remains commonly used today worldwide in form of the 15 British standard pipe threads defined in ISO 7, which are commonly used in water supply, cooling, pneumatics, and hydraulic systems. These threads are designated by a number between 1/16 and 6 that originates from the nominal internal diameter (i/d) in inches of a ...

  3. Screw - Wikipedia

    en.wikipedia.org/wiki/Screw

    A lathe of 1871, equipped with leadscrew and change gears for single-point screw-cutting A Brown & Sharpe single-spindle screw machine. Fasteners had become widespread involving concepts such as dowels and pins, wedging, mortises and tenons, dovetails, nailing (with or without clenching the nail ends), forge welding, and many kinds of binding with cord made of leather or fiber, using many ...

  4. Screw thread - Wikipedia

    en.wikipedia.org/wiki/Screw_thread

    Graphic representation of formulas for the pitches of threads of screw bolts A good summary of screw thread standards in current use in 1914 was given in Colvin FH, Stanley FA (eds) (1914): American Machinists' Handbook, 2nd ed, New York and London, McGraw-Hill, pp. 16–22. USS, metric, Whitworth, and BA standards are

  5. Whitworth - Wikipedia

    en.wikipedia.org/wiki/Whitworth

    Whitworth rifle, a British made rifle used by the Confederacy in the American Civil War; 70-pounder Whitworth naval gun and 120-pounder Whitworth naval gun, naval guns made on a similar principle; Baron Whitworth, two titles in the Peerage of Ireland; Whitworth University, a private, liberal-arts institution in Spokane, Washington

  6. Joseph Whitworth - Wikipedia

    en.wikipedia.org/wiki/Joseph_Whitworth

    Whitworth was born in John Street, Stockport, Cheshire, where the Stockport Courthouse is today.The site is marked by a blue plaque on the back wall of the courthouse. He was the son of Charles Whitworth, a teacher and Congregational minister, and at an early age developed an interest in machinery.

  7. Nut (hardware) - Wikipedia

    en.wikipedia.org/wiki/Nut_(hardware)

    Sex bolt: Barrel nut, barrel bolt, binding barrel, Chicago screw, post and screw or connector bolt Has a barrel-shaped flange and protruding boss that is internally threaded Split nut: Split lengthwise into two pieces (opposed halves) so that its female thread may be opened and closed over the male thread of a bolt or leadscrew Sleeve nut ...