In this schematic the "Washer" is used most often.
Parts such as the Headlamp: Washer (10.5x22x2.3), Washer,lock, Plug ,drain, Bolt are included in the Ts125 1971 1972 (r) (j) Usa (e03) Headlamp parts fiche.
The Screw is the cheapest item from this partsfiche.