The Nut,flange,5mm is the lowest priced item on this Carburetor (assy.) schematic.
The Carburetor (assy.) is made up of components including this Carburetor Assy which is the most expensive.
This Carburetor (assy.) diagram displays the required parts for the Cbr900rr Fireblade 1992 (n) Austria Carburetor (assy.).