This CLUTCH COVER assembly utilises seven Screw Cross 6x28(s) - the highest specified component.
Some items from this specific schematic: Screw,oval, 6x16, Washer,head,8mm, Oil-seal,18x29x7, Screw,pan,6x28.
The most reasonably priced component used on the Cb750f2 750 Super Sport 1977 Usa Clutch Cover is the Screw Cross 6x28.