I've been saying this is designed for assembly with 6-32 x 1/4 -- common PC case screws -- only[*].
[*] except for different screws[**] to mount the motor/screw assemblies
[**] which are something of a specialty item for mounting 3.5in HDDs in compact sleds
Here's confirming that the qualifier can be reduced to:
[*] and a file
Well, one kind of screw. x100. Of which a dozen need the head thinned and four of those need to be a couple mm shorter. Or spend a few $ of the special screws.