This is a minimalistic and at the same time effective fastener for two samsung ssd 870/850/860 drives and more. The case is mounted on a 140 x 140mm cooler. A primitive rendering and a reference drawing for the disc is attached.

I use 10 millimeter screws, 5mm threaded part.
The air passes under and above the disk.

SSD 2.5 rack & 140 x 140mm Cooler