On this parts fiche the Screw-washer,5x12 is the most specified component.
Parts such as the F-12: Clip,tube 5.0mm, Element,air/c, Cover,a/c., Clamp,pipe are included in the Crf50f 2009 (9) Japan Ae03-190 (jdm) F-12 parts fiche.
The Honda F-12 has eighteen products enlisted in the schematic.