Uh, no, I'm not referring to a regular old nut and a washer. They are the pieces that came with my Moser axles with drag studs. I just measured a shank type lug nut and they measure the same as studs in my axle. As long as there is a flat surface on the wheel for the washer and nut to seat, I don't for see an issue. But, a shank style lug nut isn't going to happen on a 5/8" stud. And the only thing the shank nut is doing over the studs I have are maybe center the wheel, but the studs are doing the same since they are the same size as the shank lug nuts. I guess I'll have to see how it goes because my Cragar 5 stars on the car are set up this way and they have seen many passes above 125mph with no issues.