The Nut,hex.,8mm is the lowest priced item on this Steering Handle - Top Bridge schematic.
Parts such as the Steering Handle - Top Bridge: Pipe,r.steering H, Washer, 10.3m/m, Panel Side Stand, Nut,hex.,8mm are included in the Z50jp Monkey Japan Steering Handle - Top Bridge parts fiche.
The fifteen Z50jp Monkey Japan Steering Handle - Top Bridge component parts are all listed in this schematic.