The Nut,flange,6mm is the cheapest item from this partsfiche.
Parts such as the F-10-1 Seat(ar,b,e,f,h,po): Bag,service Book, Rubber Set Stop, Seat Comp.double Sh7, Bolt, Flange,6x12 are included in the Sh50 1987 (h) Austria F-10-1 Seat(ar,b,e,f,h,po) parts fiche.
This schematic depicts all components used in the Sh50 1987 (h) Austria F-10-1 Seat(ar,b,e,f,h,po) partslist.