Parts such as the Crankcase Cover (model D): Bolt 6x35, Bolt 6x50, Cap(od:36), Bolt 6x30 are included in the Gsx250 1982 (z) General Export (e01) Crankcase Cover (model D) parts fiche.
This schematic depicts all components used in the Gsx250 1982 (z) General Export (e01) Crankcase Cover (model D) partslist.