Knowledge of this makes me uncomfortable.
If you screw it too hard, it will definitely crack it as the hole is tapered.
If you don't screw it enough, the drive will move around.
At first I felt good about it. I took it out of packaging, cool, aluminum. At least some of it. When I opened it up, painted plastic. Why the fuck is that part plastic?
Product shame: https://www.aliexpress.com/item/1005006193051123.html
Also, the fan is missing.
As Goldilocks says, it has to be juuuust right!
Do you have room to use a pan head screw?
I am not sure, I don't have screws to try with. Well, at least not ones long enough, the DVD drive came with a set too, but those assumed a flat piece of metal.
I've also thought of a more... shitty solution.
It can only slide in and out, so if I don't really tighten them, and fill the void with something, it should be fine.
So... maybe hot glue to fill the gaps.
Or, since I'd already need longer screws, I could probably drill holes through the metal that's right below, currently just covering the plastic. Though that would probably stick out too much.
Meh, if I could think of more good solutions, I'd still go with the laziest one.