Ultrabase x3 security screw size

[Phil62]

Hi there!

I bought an x31 2884 bru with an ultra base x3. It running well with win xp sp3 and pc dos 2000 dual boot.

The security screw to block the ultra bay tray is missing.

Does anybody know what type of screw I could use?

I’m also looking for the recovery cd set ISOs for that x31 2884 bru in French

Regards,

Philippe