Simple screw question

[oceancyc]

Right now my raptors are being held in with only 3 screws each. I'd like to make sure they have all 4. The problem is they're being held in place by thre diifferent sized screws. Some are coarse thread and some are fine thread wich perplexes me because they all fit fine What size screw should they be so I can go down to Ace to pick some up?

 

[tdg]

They should be using the coarse threaded ones, the fine threaded are for floppys and optical drives.

 

[dandragonrage]

Just take one of the kind that fits (the same kind that should be holding in your expansion cards and probably motherboard as well) and ask them.