You asked if they were rated class III. I stated they are not rated anything.
I've talked to 3 separate steel suppliers about getting the material. Everyone one has said they can't get it, two said Reese has a patent on it. I'm not a steel supplier, so I am going by what I am told.
The local trailer place has 2.5 x .25 wall powder coated material in 4 foot lengths. Great besides the fact we buy it 20 feet at a time, and would have to grind the powder coat off before we welded it.
Why do you keep assuming from the picture it's a "class III hitch"? We claim it's a receiver hitch, nothing more nothing less.
There is NO safety issue with this receiver hitch. None. It can be annoying that is rattles more than a standard Class III hitch depending on trailer and tongue load, but if that is an issue there are plenty of ways to fix it.
It's 3/16 wall tubing surrounded by two welds spaced 2" apart, then surrounded by 3/16 box tube. What is going to happen?