I compared the pic of the new tank to my old tank and it looked the same vint_mow .
The threads were all checked and I know they are 6 mm x 1mm ,I would not buy nuts online if you can go to Bunnings or a bolt place etc as they are usually under $1. each, a pack of 16 at Bunnings is $3.90.
Your first tank image is for an EY20 motor and the EY28 tank has 4 studs that are 6mm x 1mm ,the standard 6mm bolt is usually 1 mm pitch.
