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2. Speed nut - Wikipedia

   en.wikipedia.org/wiki/Speed_nut

   The speed nut was invented in 1923 and patented in 1924 by Albert H. Tinnerman, son of George Tinnerman, who founded Tinnerman Steel Range Company. [ 4] The company, established in 1870, originally manufactured sheet metal kitchen ranges. However, after Tinnerman invented the nut to resolve issues with stove shipping, the invention became so ...

3. Clip-on nut - Wikipedia

   en.wikipedia.org/wiki/Clip-on_nut

   A square style clip-on nut does not clip onto the edge of the sheet metal, but rather the edges of a square hole or slot. It is a square nut that has a sheet metal retainer that protrudes down two sides of the nut. These legs are formed to have lips that grab onto the sheet metal object. Prior to tightening the nut, it can float in the hole or ...

4. Nut (hardware) - Wikipedia

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

   Nut (hardware) - Wikipedia ... Nut (hardware)

5. Washer (hardware) - Wikipedia

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

   Washer (hardware) A washer is a thin plate (typically disk-shaped, but sometimes square) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a bolt or nut. Other uses are as a spacer, spring (Belleville washer, wave washer), wear pad, preload indicating device, locking device, and ...

6. Cage nut - Wikipedia

   en.wikipedia.org/wiki/Cage_nut

   A common use for cage nuts is to mount equipment in square-holed 19-inch racks (the most common type), with 0.375 inches (9.5 mm) square-hole size. There are four common sizes: UNF 10–32 and, to a lesser extent, UNC 12–24 are generally used in the United States; elsewhere, M5 (5 mm outside diameter and 0.8 mm pitch) for light and medium equipment and M6 for heavier equipment, such as servers.

7. Henry Quackenbush - Wikipedia

   en.wikipedia.org/wiki/Henry_Quackenbush

   Amy (1886 - 1966) Franks (1899 - 1988) Henry Marcus, Jr. (1904 - 1910) Henry Marcus Quackenbush (April 27, 1847 – September 8, 1933), commonly called "H.M.", was an American inventor and industrialist who founded the H.M. Quackenbush Company [1] in Herkimer, New York. His company was widely known for its air rifles and for the invention of ...