Hey,
got my parts and put them in now.
Axle nut is HMN128. Can't find the specs, but you can get them from SJS cycles or amazon/ebay etc.
Also got myself the specialty washers (Sturmey Archer 13/32 inch Serrated Lock Washer 7.9mm slot - HMW155) and they are like the old ones I had, but broke a...