The Screw,tapping,5x8 is the lowest priced item on this F-20 schematic.
Of all the components used in this assembly the Swingarm *nh146m* is the most expensive.
Parts such as the F-20: Pin,cotter 2.0x15, Slider Assy.,chai, Spg-washer 10mm, Bolt,rr.fork are included in the Xz100 2008 (8) Japan Hc07-150 F-20 parts fiche.