The Screw M6x12 is the cheapest item from this partsfiche.
Parts such as the 037 Seat: Cable, Seat Lock, Screw, Special, Owners Manual Multilanguage, Seat Lock are included in the M620 2006 Usa (monster 620) 9151-1462e 037 Seat parts fiche.
On this parts fiche the Screw Tcei M5x10 is the most specified component.