On this parts fiche the Bolt,flange,6x28 is the most specified component.
The Honda OIL FILTER/OIL PAN/ OIL PUMP has thirty products enlisted in the schematic.
Parts such as the Oil Filter/oil Pan/ Oil Pump: Washer,plug,drain 12, Pan,oil, Washer, 6x2.3, Bolt,flange,6x28 are included in the Vfr750f Interceptor 1988 (j) Australia / Kph Oil Filter/oil Pan/ Oil Pump parts fiche.