Originally Posted by
juvela
If they have a groove in the area just outboard of right flange and just inboard of the threads they are BSC/ISO dimension. If this area is smooth/ungrooved they are metric/french threaded. This manufacturer does not offer italian thread.
Thanks! That's a great tip to tell if it is French or ISO. I've had a look at the hub on the wheel I removed and there isn't much of a space at all between the thread and flange, certainly not enough for another groove. It's much like the French example you have given and smooth.
Great advice, thank you.