The lowest price component in this Fuel Tank (model K3) parts-list fiche is the Screw.
In this schematic the "Screw" is used most often.
The seventeen Rm85l 2002 2003 2004 2005 '06 (k2) (k3) (k4) (k5) (k6) Usa (e03) Fuel Tank (model K3) component parts are all listed in this schematic.