OT trying to move some systems to a rack

[lerninlinux at comcast.net]

I am trying to move some systems to rack cases, but I need to find a local supplier of cage nuts,  
anyone know anywhere?  A while back someone had talked about a computer junk store in Raytown 
(someone else told me they had racks)  and I know it started with a M, but I can't remember the 
name.  And I heard they may have changed names.

Thanks