The part GB/T6170-M6 is available for purchase and is in stock
Ships from Sweden next business day and should be with you within a week
3 pieces "nut, hexagon m6 GB/T6170-M6" are being used on the page "F30/F40 bottom cowling" They are sold one by one, if you need a complete set you need to buy multiple.
Nut, hexagon m6 GB/T6170-M6 can be found as number 7 on the exploded view below
This nut, hexagon m6 is used for all these parsun models