Hy Guys, I did some research on the 9/16" rear wheel studs, and I did find one that is correct in all respects except it is too long, I think most of us have some sort of tool that can adjust the length. Any way here are the p/ns
Raybestos 27813B
Napa NOE6412181
F@#d E5TZ1107B
Dorman 610-303
I did purchase one of these and installed it in a hub and it fit perfectly, hope that helps.