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  2. Wrench - Wikipedia

    en.wikipedia.org/wiki/Wrench

    A set of metric spanners or wrenches, open at one end and box/ring at the other. These are commonly known as “combination” spanners. A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and bolts—or keep them from turning.

  3. Perforated baton - Wikipedia

    en.wikipedia.org/wiki/Perforated_baton

    The "Murray Springs shaft wrench" appears to be a unique North American example of a similar tool made of bone and comes from the Clovis culture. It dates to about 9,000 years ago and was found in Arizona, where it is now in the Arizona State Museum. It is 259mm long and undecorated, with a simple shaft with a larger end, which has a single ...

  4. Shaft (mechanical engineering) - Wikipedia

    en.wikipedia.org/wiki/Shaft_(mechanical_engineering)

    The material used for ordinary shafts is mild steel. When high strength is required, an alloy steel such as nickel, nickel-chromium or chromium-vanadium steel is used. Shafts are generally formed by hot rolling and finished to size by cold drawing or turning and grinding. [citation needed]

  5. Line shaft - Wikipedia

    en.wikipedia.org/wiki/Line_shaft

    A line shaft is a power-driven rotating shaft for power transmission that was used extensively from the Industrial Revolution until the early 20th century. Prior to the widespread use of electric motors small enough to be connected directly to each piece of machinery, line shafting was used to distribute power from a large central power source ...

  6. Pipe wrench - Wikipedia

    en.wikipedia.org/wiki/Pipe_wrench

    A pipe wrench is any of several types of wrench that are designed to turn threaded pipe and pipe fittings for assembly (tightening) or disassembly (loosening). The Stillson wrench, or Stillson-pattern wrench, is the usual form of pipe wrench, especially in the US. The Stillson name is that of the original patent holder, who licensed the design ...

  7. Screwdriver - Wikipedia

    en.wikipedia.org/wiki/Screwdriver

    A typical simple screwdriver has a handle and a shaft, ending in a tip the user puts into the screw head before turning the handle. This form of the screwdriver has been replaced in many workplaces and homes with a more modern and versatile tool, a power drill, as they are quicker, easier, and can also drill holes. The shaft is usually made of ...

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