The lowest price component in this Wire Harness / Ignition Coil parts-list fiche is the Bolt, Flange,6x12.
This part-list fiche shows all the components that make up the Cb750c 750 Custom 1981 (b) Usa Wire Harness / Ignition Coil .
In this schematic the "Bolt,flange,6x20" is used most often.