Thanks a lot, I did try standard 6/32 screws from pc cases but because their head is flat i can't rely on them to hold it tight, might collapse. MS24693 is apparently 8-32 thread which i already have, only fit rear. Do you know the front p/n?The Larger screws are 8/32 UNC and the Smaller screws are 6/32 UNC.
Check out - MS24693 MACHINE SCREWS (AN507) from some suppliers.
You will need 1/4" long countersunk, if you are using the standard brackets.