In this schematic the "Bolt,flange,10x35" is used most often.
Check out any of the eleven Steering Stem components enlisted.
Parts such as the Steering Stem: Washer, Dust Seal,strg.hd, Stem Comp,strg, Bolt,flange,sh 6x10 are included in the Cbr600f Hurricane 1993 (p) Germany / Kph 27p Steering Stem parts fiche.