Some items from this specific schematic: Screw,beam Adjust, Bolt,flange,6x25, Stay, Headlight, Case,hd/lt *r-23*.
The Screw,tapping,4x8 is the lowest priced item on this F-1 Headlight schematic.
The F-1 Headlight assembly is constructed from several parts from which the Case,hd/lt *r-23* is the most expensive.