[N0tt0N]

I can't seem to find any information on why 9x6/9x7s use crap exhaust screws instead of studs with nuts. Seems like another case of aluminum not being the best material to screw things into repeatedly but I don't see anyone offering studs. Is it because exhaust components are expected to deteriorate and a screw is easier to replace than a stud? The crap screw twists off before you can damage the aluminum through over torqueing? Is it the chemistry between a stainless stud and the aluminum? Now I am curious and someone here knows!