Parts such as the Headlight: Screw, Pin, Lock, 5m/m, Washer,spg.,10mm, Unit, Sealed Beam are included in the Cb500k2 Four 1973 Usa Headlight parts fiche.
On this parts fiche the Washer,head Light is the most specified component.
The thirty-one Cb500k2 Four 1973 Usa Headlight component parts are all listed in this schematic.