This schematic depicts all components used in the Nh90m 1988 (j) Japan Hf05-100 / Type 2 F-20 partslist.
Parts such as the F-20: Protector,muffler, Muffler Comp.,ex., Bolt,flange,8x32, Nut,flange,6mm are included in the Nh90m 1988 (j) Japan Hf05-100 / Type 2 F-20 parts fiche.
This F-20 assembly utilises three Bolt,washer 6x6(s) - the highest specified component.