The nine Cb600f3 Hornet 2010 (a) France / Cmf St 25k Rear Cushion component parts are all listed in this schematic.
The Nut,u,flange,10mm is the cheapest item from this partsfiche.
Some items from this specific schematic: Collar,cush Conn, Bolt,socket 10x70, Cushion Assy,rear, Dust Seal,17x24x5.