Parts such as the Frame: Screw(3xv), Down Tube Comp., Nut(4kg), Bush are included in the Xg250 2005 4d62 Sweden 1d4d6-332g1 Frame parts fiche.
In this schematic the "Nut(4kg)" is used most often.
The most reasonably priced component used on the Xg250 2005 4d62 Sweden 1d4d6-332g1 Frame is the Bolt, Flange(4my).