would turn into a shop project? Even though APC, who shipped rack
rails with the UPS, and BlackBox, who makes the rack enclosure, both
claim to use #10-32 screws, I was only able to make APC's screws fit
in about 1/10 holes in BlackBox's rack. Other screws of this size from
lab supply didn't fare any better. Luckily, we have a whole pile of
BlackBox screws that came with the enclosure. Their own screws fit in
about 1/2 the threaded holes in their own rack. It took a powered
driver to get them all in, too, sometimes taking multiple tries to get
part of the way in, back out and blow off all the metal shavings, then
go a little farther.
Like I said, I'm not impressed BlackBox.