@R9000 Yeah, as much as I would like to do that, the wheels have a larger bore than the nuts in question, so there's a gap between nut and wheel. I filled the gap with as much epoxy resin as logical, and, like I said, the resin along with the nut just started to spin inside the bore.

@Maxamuslead I have no heating apparatus nor do I have any way to press the nut into a wheel. And I tried to cut wheels out from HDPE and they looked more like demented discuses.

So if there's any wheels that I can use... max I'd say'd be 5 inches diameter, with a bore that can take a 3/8 UNF nut, as said before, any advice would be a great help. Or if you can make them and such.