Originally Posted by
Sheldon Brown
Yes, freewheel threading is quite well standardized. There used to be an oddball French size, but that went extinct sometime in the '80s.
Your hub will work fine with any freewheel, though I would consider it a bit of a downgrade to go from a Shimano to a Regina. You'll likely suffer a deterioration in shifting quality.
Sheldon "Interchangeabilitude" Brown
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