Asking the question with a new slant and diagram. I have an original set of rims. When I put on the Branda lug nuts for 5 spoke MagStar rims, the male cone of the lug nut sits nicely mated to the female cone of the rim. The hole doesn't look elongated. But, the sharp edges of the lug nut also fit into the same female cone in the rim. There isn't much material for the lug nut to grab onto. It is grabbing only that surface where the female and male cones touch. The sharp edges of the lug nut do not extend beyond the hole edges. I am not sure if this is the way they were meant to be. Should I be safe and add a conical stainless washer to add some material to grab onto?