On this parts fiche the Bolt,flange,6x28 is the most specified component.
The lowest price component in this Oil Filter/oil Pan/ Oil Pump parts-list fiche is the Washer,plug,drain 12.
thirty-one components are listed in the schematic for this Vfr750f Interceptor 1987 (h) Sweden / Kmh Oil Filter/oil Pan/ Oil Pump .