wheel nuts keep loosening

[Robl45]

The 23mm hexes that I put on my lst2 keep loosening the wheel nuts. mostly left front but all of them loosen up. I can't even get through one run. the dude racing sells bellville washers or wave washers that are supposed to stop this by keeping tension on the nut. Does anyone know where I could buy something like this locally?

I've read that people say to use blue loctite, but from my experience loctite eats through plastic so i'm trying to stay away from that idea. Plus my wheels are chrome as well.