Compaq 9000 Rack Thumb Screw

Slightly off topic for list although the rack and equipment are almost 20 years old now.... I got me a hand me down Compaq Proliant StorageWorks UE Rack. Basically it is a rack case that can hold 14 drives. The case is secured to the cabinet with two thumb screws (see attached pictures). These are like standard thumb screws except there is a spring component to them as well (I assume to give wiggle so it is easier to match screw to cage nut). You can see pictures of the screws in this VCF post: www.vcfed.org/forum/showthread.php?68556-Compaq-Rack-Thumb-Screws&p=559… ost559354 On my hand me down the one on the left is missing. I have looked and there doesn't seem to be a Compaq part number (I think the screws are press fitted into the metal frame so not really user replaceable). I don't think there is anything special about the screw and I can always use a standard M6 screw for the missing side. However, I'd like to try and match/restore the original. I have tried googling for theses screws but I am not coming up with the right item. I am guessing I am not using the right terms or names for the screws. So does anyone have some broken/parts Compaq rack equipment where I can have the screws? Or can point me to a source online to get a replacement? TIA! -Ali