[Walt Fricke]

These parts only need to be replaced if damaged in some way. Replacing studs is pretty labor intensive, and risks damaging the threads in the aluminum. Aesthetics are a different story. The copper plated nuts with a radial slit are nice to have because the slit distorts the thread and creates a lock effect, but properly torqued regular nuts (or the normal but sometimes problematic barrel nuts) do the job fine.