Parts such as the Rear Wheel: Spring(l:35.8), Tube Assy,wheel Inner, Seal,oil(25x40x6), Nut are included in the A100 1976 1977 (a) (b) Usa (e03) Rear Wheel parts fiche.
With four applications this Bolt(8x33.5) is the most specified part.
The lowest price component in this Rear Wheel parts-list fiche is the Washer(12.5x20x1).