The Washer,plain, 6mm is the cheapest item from this partsfiche.
The sub assemblies and components that make up this Primary Shaft include this Shaft,primary, the most expensive part.
Parts such as the Primary Shaft: Sprocket,primary, Shaft,primary, Gear,prim.drive, Circlip,17mm are included in the Cb750c 750 Custom 1981 (b) Usa Primary Shaft parts fiche.