The lowest price component in this Headlamp (gsf1200st/sv/sw/sx/sav/saw/sax) parts-list fiche is the Screw.
Some items from this specific schematic: Joint,rubber, Cover,socket, Bulb(12v60/55w,h4), Headlamp Assy.
With a quantity of four pieces, the Screw is the most used part in the HEADLAMP (GSF1200ST/SV/SW/SX/SAV/SAW/SAX) diagram.