Parts such as the Brake Piping: Washer-plain, Collar, Bracket,fork Under Ho, Bolt-flanged,6x35 are included in the En650dhfa Vulcan S 2017 Europe,middle East,africa Brake Piping parts fiche.
The component with the lowest price in the BRAKE PIPING schematic is the Bolt-flanged,6x16.
On this parts fiche the Washer-seal,10.1x14.5 is the most specified component.