eleven components are shown in this Gsx600f Katana 2002 (k2) Usa (e03) Steering Stem (model K3) exploded diagram.
The lowest price component in this Steering Stem (model K3) parts-list fiche is the Bolt.
Some items from this specific schematic: Seal,steering Lwr, Nut,cap, Bolt, Bearing(25x47x15).