Square Cage Nut

thingiverse

I needed cage nuts for installing hardware into my server rack without delay. Shipping was out of the question. These cage nuts use standard M6 bolts with M5 hex nuts. Leaving the nut cavities loose was a deliberate choice in case problems arose; gluing them in place is an option. The square fits tightly into typical square rack post holes (9.5mm). A small chamfer was added to provide minimal extra strength, although its effectiveness remains uncertain.