The spare part GB/T818-M6X25 is available to order
Delivery time is normally about one month
2 pieces "pan head screw m6x25 GB/T818-M6X25" are being used on the page "F20/F25 upper casing" They are sold one by one, if you need a complete set you need to buy multiple.
This pan head screw m6x25 is used for all these parsun models