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British Bikes / Re: Spanners and sockets
« on: January 20, 2021, 09:48:39 AM »
I'm restoring a 1930s Francis Barnett Black Hawk with Royal Enfield hubs and was supprised to find the spindles on both are 7/16 unf. Perhaps it was done to ensure the correct nuts were used. I would have thought that unf was quite rare in the 30s.