The cataloging is hit and miss on fasteners. Sometimes they show them as not serviced separately. Sometimes dimensions are listed, sometimes not. What I used to do when I was a parts guy at the dealer was to just go through all of our parts bins/drawers to find something. Was usually successful doing that. You will not find listings at all at parts stores for dimensions, locations, quantities etc for vehicle fasteners. The closest I ever came up with, when working at the stores, was head bolt and wheel stud listings in the Dorman catalog.