The lowest price component in this Seat/seat Cowl (cb600f3/4/5/6) parts-list fiche is the Bolt,flange,6x14.
The sub assemblies and components that make up this Seat/seat Cowl (cb600f3/4/5/6) include this Seat,assy Double, the most expensive part.
In this schematic the "Cap,soc.bolt 8mm" is used most often.