Find a shop that sells Gorilla Nuts (
https://www.gorilla-auto.com/) or McGard (
McGard)
Gorillia offers HT (Heat Treated) nuts that are supposed to be tougher.
They are solid steel chromed. I used to have an off-road shop and that's all I sold because they are good. Eventually they all rust, but you can polish them up every now and again.
Oz