British Standard fine thread


noun

engineering a screw thread having a Whitworth profile but a finer pitch for a given diameterAbbreviation: BSF

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Question 1 of 7
What does “Indigenous” mean?
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