The semi-circular cutout at the edge of the SSD has a semi-circular patch of yellow metal around it. The head of the mounting screw should contact that but NOT any other metal outside it. Make sure the screw head is small enough to comply with that.
Another point: Screws of the same external diameter do not always have the same thread pitch. Make sure the screw goes in smoothly without having to be forced.
If you observe these two requirements, you should be OK.