The Bolt-washer,6x12 is the lowest priced item on this Seat/seat Cowl schematic.
In this schematic the "Cap,soc.bolt 8mm" is used most often.
This part-list fiche shows all the components that make up the Cb600f2 Hornet 2001 (1) European Direct Sales Kph 34p Seat/seat Cowl .