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2. British Association screw threads - Wikipedia

   en.wikipedia.org/wiki/British_Association_screw...

   The British Standards Institution recommends the use of BA sizes in favour of the smaller British Standard Whitworth (BSW) and British Standard Fine (BSF) thread screws (those below 1 ⁄ 4 inch). [4]: 4 Generally, the 0BA size was dropped in place of 7 ⁄ 32 inch BSF in assemblies that included larger fasteners, however, in smaller equipment ...

3. Robertson screw - Wikipedia

   en.wikipedia.org/wiki/Robertson_screw

   Robertson screwdrivers are easy to use one-handed, because the tapered socket tends to retain the screw, even if it is shaken. [3]: 85–86 They also allow the use of angled screwdrivers and trim-head screws. The socket-headed Robertson screws are self-centering and reduce cam out. They also stop a power tool when set, and can be more easily ...

4. British Standard Whitworth - Wikipedia

   en.wikipedia.org/wiki/British_Standard_Whitworth

   The Whitworth thread was the world's first national screw thread standard, [1] devised and specified by Joseph Whitworth in 1841. Until then, the only standardization was what little had been done by individual people and companies, with some companies' in-house standards spreading a bit within their industries.

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   Get lifestyle news, with the latest style articles, fashion news, recipes, home features, videos and much more for your daily life from AOL.

6. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   A machine screw is a small fastener less than 1 ⁄ 4 inch (6.35 mm) in diameter similar to a bolt, but which usually has a recessed drive type (slotted, Phillips, etc.) on its head to allow turning it with a screwdriver. Machine screws are threaded the entire length of the shank, and are intended to screw into a pre-formed thread in either a ...

7. Computer case screws - Wikipedia

   en.wikipedia.org/wiki/Computer_case_screws

   The #6-32 UNC screw has a thread pitch of 1/32 in (0.031250 inches (0.7938 mm)).. The #6-32 UNC is a UTS screw specifying a major thread diameter of #6 which is defined as 0.1380 inches (3.51 mm); and 32 tpi (threads per inch) which equates to a thread pitch of 0.031250 inches (0.7938 mm).