Looking for thread/pitch specifics

[Silentbob343]

Looking for thread and pitch info so I can get the appropriate tap to chase the threads. I need to clean two holes on a lian-li case. The holes are on the HDD cage and are the std. HDD/Optical Drive screws.

 

[Silentbob343]

Looking around it seems as though it could be 4-40 or 3Mx5. Anybody know if that sounds right?

 

[rkatapt]

Just get yeah a cheap thread pitch gage. Then you won't waste money on taps.

Link

Here's a thread pitch chart.