The nine Nps50 Zoomer 2008 (8) Japan Af58-170 F-17 component parts are all listed in this schematic.
The Pin Cotter 2.5mm is the cheapest item from this partsfiche.
Parts such as the F-17: Bolt,flange,8x20, Bolt,flange,6x22, Stopper Rubber,st, Spring,main Stand are included in the Nps50 Zoomer 2008 (8) Japan Af58-170 F-17 parts fiche.