The lowest price component in this Headlamp parts-list fiche is the Spacer,headlamp Unit.
The Screw is the most widely applied product in the TC100 1974 (L) USA (E03) HEADLAMP ( two times ).
Some items from this specific schematic: 01204-08207, Cushion,headlamp Housing, Spacer,headlamp Housing, Washer.