Z Axis Nut Mount 8mm Traped Nut

I am waiting for a lead screw and have to use 8mm threaded rod in the mean time.
So i have edited the z holder to use a trapped m8 nut.
If you use this method you should use stainless steel threaded rod and a steel nut.
This will stop the two binding also the nut will wear not the threaded rod.