Parts such as the Turn Signal: Lamp-assy-signal,fr, Nut,flanged,10mm, Washer,plain,4mm, Washer,10.5x37x1.6 are included in the Zr400b1 1984 Europe Uk Fr It Wg Turn Signal parts fiche.
The Washer,plain,4mm is the lowest priced item on this Turn Signal schematic.
This TURN SIGNAL assembly utilises eight Screw,tapping,4x25(s) - the highest specified component.