Welcome cian.
According to
Table/cabinet interchangeability??? generic Singer to Pfaff 360 and
Pfaff 130 - My mama's machine It looks like the Pfaff 130 hinge pins are the same as Singer.
I believe that it is the Necchi that has different size holes and pins. There may be others that are different sizes.
I saw
https://www.instructables.com/id/How...-Machine-Case/ that has instructions about making the hinge pins. I don't remember it saying anything about the different sizes, but I know there are different size hinge pins.
I have a plastic case from the 1970s that the hinge pins seemed smaller so it would fit more machines.
Janey - Neat people never make the exciting discoveries I do.