The nineteen Ar50c8 1990 Europe Uk Nl Gr Sa Step component parts are all listed in this schematic.
The component with the lowest price in the STEP schematic is the Pin-cotter,2.0x15.
Some items from this specific schematic: Bolt-upset,10x25, Bar-rear Footrest, Bolt-upset,10x22, Nut-hex-fine.