Quote Originally Posted by wakina View Post
Well professor, the reason that I used a thread locker instead of lock nuts would be the fact that the screws fasten directly into the threaded holes in the base of the upright riser tube the holder sets in. They go through the base plate from the bottom into counter sunk predrilled holes then are threaded into the predrilled threaded holes in the riser tube. Open the link that accompanied the old 2015 post you brought up again and take a look at the riser in question. There is no way to use the lock nuts you recommended. Class dismissed!!!!!

One question does come to mind and that is are you here to help or to nitpick?
I know exactly what you used. I'm here to educate you of what will not work. Expanding Nut certs like you used will not work in that application no matter how much thread locker you use because you need spread out the load with a backing plate with a minimum of 1/4 aluminum plate or maybe a rail mount system made by Cisco or Traxtech. I suggest you don't go into the mechanical engineering discipline. Guys like you are why warning labels are put on lawn mowers not to put your hands and feet near spinning blades. You can pick up a repeat class next semester when I'm available in your area.