The lowest price component in this Rear Case parts-list fiche is the Bolt,flange,6x16.
In this schematic the "Bolt,flange,cap,8" is used most often.
Parts such as the Rear Case: B/brg Rad N/com, Case Comp,rear, Bolt,flange,6x16, Bolt,special Flan are included in the Gl1500c Valkyrie 2000 (y) Switzerland Rear Case parts fiche.