The Washer, Nylon 6x12x0.5 is the cheapest item from this partsfiche.
Parts such as the 030 Frame: Washer, Nylon 6x12x0.5, Cover , Frame Rh, Screw, Frame are included in the M620s 2002 Eu (monster 620) 9151-1461a 030 Frame parts fiche.
Of all the components used in this assembly the Frame is the most expensive.