With a quantity of two pieces, the Screw is the most used part in the CAM CHAIN (MODEL Z) diagram.
The most reasonably priced component used on the Gs1100gl 1982 (z) Usa (e03) Cam Chain (model Z) is the Screw.
Some items from this specific schematic: Bolt, O Ring(d:2.4,id:20.8), Screw, Seal,oil(10x16x4).