Size of screws (thread and length) that fit the bottom panel of TP500L

Hi all,

I got my hands on an ASUS TP500L missing a hard drive, I replaced that and it's now working fine.

One problem is that the bottom panel screws were missing when I got it from the thrift shop. It clips closed but I'd like a more secure fit using the 10 screw holes.

Any advice on what the thread and length of the screws are or where I could find that info would be much appreciated.

Thanks,

SWW