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British Standard fine thread

noun

  1. engineering a screw thread having a Whitworth profile but a finer pitch for a given diameter BSF
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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British Standard brass threadBritish Standard pipe thread