Parts such as the Front Fork: Seat,spg.upper, Washer,spl.,8mm, Screw,pan,3x20, Fork,l.fr. are included in the Atc250es Big Red 1985 (f) Canada Front Fork parts fiche.
In this schematic the "Nut,flange,6mm" is used most often.
The Front Fork assembly is constructed from several parts from which the Fork,l.fr. is the most expensive.