The lowest price component in this Carburetor parts-list fiche is the Screw-washer,4x10.
Of all the components used in this assembly the Carburetor Assy is the most expensive.
Parts such as the Carburetor: Screw-wash. 5x12, Screw-washer,4x16, Screw Set C, Float Set are included in the Cb400nc 1983 (d) European Direct Sales Carburetor parts fiche.