17-03-2020, 08:29 PM
Not sure the size but I recently had to undo the nut and spent far to long trying to find the right spanner only to find out that someone had fitted a none standard A7 nut on the hub right thread but head to big. I was lucky as on looking at the other hub I could spot the nut was wrong, may be worth having a look to see if the wrong nut is fitted.