The Screw-wash,5x10 is the lowest priced item on this Fan Cover schematic.
Parts such as the Fan Cover: Sponge,fuel Cap B, Collar,fan/c, Clip B8,tube, Clip B10,tube are included in the Gsv190a\n2g7\14z2d403 Fan Cover parts fiche.
In this schematic the "Bolt,stud (fan/c)" is used most often.