This E-1 assembly utilises four Screw Cross 6x28(s) - the highest specified component.
The component with the lowest price in the E-1 schematic is the Screw,flat,5x12.
Parts such as the E-1: Gasket (mca), Screw 4x5, Screw Cross 6x28, Screw,cross,6x10 are included in the Cb450k3 Japan E-1 parts fiche.
