That is odd. I looked at several pictures of various Crucial M4 drives and a few brands of hard drives and the screw holes aligned perfectly.
I guess your laptop maker chose a custom solution for some reason. You mentioned a laptop install kit, but somehow I do not see that solving this problem unless it was made for that specific laptop. In other words, it may fit the drive, but then not attach to the laptop properly.
I really do not know what to say on this one. hopefully someone will chime in with an idea.