The thirty-one Sv650a 2004 (k4) Usa (e03) Steering Stem (sv650k3/k4/k5/k6/k7/ak7) component parts are all listed in this schematic.
Some items from this specific schematic: Washer, Bolt(8x40), Washer, Bolt(8x40).
The Nut is the cheapest item from this partsfiche.