The Washer,plain, 6mm is the lowest priced item on this F-21 Step schematic.
With four applications this Pin,cotter 1.6x15 is the most specified part.
Parts such as the F-21 Step: Collar A,step, Washer,main Step, Washer,plain, 6mm, Rub.b,step Mtg. are included in the Ft500 1982 (c) F-21 Step parts fiche.
