Another nut oddity... You may recall me writing here not long ago about changing a bearing on the rear of my yellow Fiero. The new bearing, which I got from TFS, came with a nut, but I didn't know it would, so I also bought a nut from TFS. While the two nuts were the same thread, they weren't the same outside diameter. The separate nut was the same outside diameter as the old one, but the one packed with the bearing was smaller, and would have required a different socket. So I used the one that was the same size as the old one.