front wheel nut size
 

Can any one confirm the size for the nut for the front wheel of a 600ss please?

I think it's 28mm

Cheers!

600SS didn't have a nut. it had a captive threaded spacer in one fork and the solid 20mm diameter spindle had a 14mm Allen/hex socket

The later bikes with a hollow 25mm diameter spindle indeed had a 28mm Nut