In this schematic the "Bolt, With Washer (30x)" is used most often.
Parts such as the Fender: Plug(4bp), Bolt, With Washer (30x), Bracket License, Stay 1 are included in the Xt660r 2006 3s62 Portugal 1e3s6-300e2 Fender parts fiche.
The most reasonably priced component used on the Xt660r 2006 3s62 Portugal 1e3s6-300e2 Fender is the Bolt, Flange(4my).