Parts such as the Fender: Bolt,8x20, Bolt,6x12, Nut,flanged,6mm, Bolt-upset-wp are included in the Zr400b1 1984 Europe Uk Fr It Wg Fender parts fiche.
With four applications this Bolt,8x20 is the most specified part.
The lowest price component in this Fender parts-list fiche is the Nut,flanged,6mm.