Lug nut seated inside a rusty socket over a wheel stud on a hub…

A rusty socket sits upright over one wheel stud on a hub, with a lug nut visible down inside the socket bore. The hub is bolted to a machined brake rotor resting on an orange shop rag on gravel pavement, with the splined axle tube rising at left.

AI caption August 2010 · Photo 329 of 824