tandard Fine</a> (BSF) standard has the same thread angle as the BSW, but has a finer thread pitch and smaller thread depth. This is more like the modern "mechanical" screw and was used for fine machinery and for steel bolts.</p>
<p>The <a href="//en.wikipedia.org/wiki/British_Standard_Cycle" title="British Standard Cycle">British Standard Cycle</a> (BSC) standard which replaced the Cycle Engineers' Institute (CEI) standard was used on British bicycles and motorcycles. It uses a thread angle of 60° compare