Originally Posted by
Unca_Sam
Apparently "Phillips" is the magic word. I found a pair of axle assemblies for $$ on the bay, but both listed the axles as 5/16". Is my axle really 5/16, since they're *almost* the same? I know 26tpi is really difficult to distinguish from 1mm thread pitch without a thread gauge.
It's ambiguous. BSC is measured in Imperial so 5/16 is pretty much 8mm.
Raleigh bought them out in '60. Pre '60 Phillips cones are 24 tpi BSC while post '60, would at some point, be 26 tpi.