Some items from this specific schematic: Bolt,side Stand,black, Screw-pan-cros,6x10, Screw-csk-cros, Washer-plain-small,6m.
The most reasonably priced component used on the Z550g1 Gt550 1983 Europe Uk Fr Fg It Sd Stand(s)(z550-g1) is the Washer-plain-small,6m.
On this parts fiche the Bolt-flanged,8x40 is the most specified component.