Me: "Okay, I guess I'll mount this VESA transposition plate so I can mount a 100x100 monitor on this 75x75 arm I found in the "might need it one day" cellar box"
The transposition plate's supplied screws & nuts: "Ha. Ha. Ha. Fuck you."
I dunno what the hell their problem is, but I was always taught "if the nut doesn't travel smoothly along the thread, for fuck's sake don't try to force it", so... hm.