On this parts fiche the Bolt,flange,10x20 is the most specified component.
Parts such as the Step/stand: Rubber,step, Hook,m/stand Spg, Bar Comp.,step, Rubber,stand Stop are included in the H100s 1983 (d) Latin America Step/stand parts fiche.
The component with the lowest price in the STEP/STAND schematic is the Bolt,flange,10x20.