The Bolt, Flange (5f9) is the lowest priced item on this Cylinder schematic.
With ten applications this Bolt, Stud (31k) is the most specified part.
Parts such as the Cylinder: Bolt (5f7), Holder 1, Nut (3n8), Joint 1 are included in the Rd350lcf 1986 1wu Switzerland 261wu-361e1 Cylinder parts fiche.