The Nut,6mm is the cheapest item from this partsfiche.
Parts such as the Front Master Cylinder: Boot,dust, Cap-brake, Liner,piston, Holder-brake,master C are included in the Kz650f1 1980 Usa Canada Front Master Cylinder parts fiche.
This schematic depicts all components used in the Kz650f1 1980 Usa Canada Front Master Cylinder partslist.