The Screw is the lowest priced item on this Front Caripers (gs1000c schematic.
Of all the components used in this assembly the Pad Set (mca) is the most expensive.
Parts such as the Front Caripers (gs1000c: Axle No.2, Lock Washer, Pad Set (mca), Holder,caliper are included in the Gs1000en 1978 (c) Usa (e03) Front Caripers (gs1000c parts fiche.