Check out any of the nineteen Rear Wheel components enlisted.
Parts such as the Rear Wheel: Flange Comp.,driv, Wheel Set,rr., Bolt,stud Ii,12x2, Weight,bal.20g are included in the Nas750m Rc39 Japanese Domestic Rear Wheel parts fiche.
The Bolt,stud Ii,12x2 is the cheapest item from this partsfiche.