The most reasonably priced component used on the A100 1976 1977 (a) (b) Usa (e03) Crankcase Cover is the Gasket(6.2x11x1) (nas).
Parts such as the Crankcase Cover: Screw, Hose(3x5x600), Screw, Screw are included in the A100 1976 1977 (a) (b) Usa (e03) Crankcase Cover parts fiche.
This CRANKCASE COVER assembly utilises four Screw(s) - the highest specified component.