The thirty-two Gsf1200s Bandit 2005 (k5) Usa (e03) Steering Stem (gsf1200k1/k2/k3) component parts are all listed in this schematic.
The Nut is the lowest priced item on this Steering Stem (gsf1200k1/k2/k3) schematic.
Of all the components used in this assembly the Stem,steering is the most expensive.