Also replace any rubber hoses with new. The car has to be 20+ years old by now. They are tired, worn and likely cracked and ready for an accident to happen... assuming of course they haven't already been replaced.
As for the drums; I'm not sure if the studs are pressed into the drum, or the drum rides on a central hub? My guess would be the latter. If concerned about the nuts, order from a local dealer, or from an online source. If they are a wear/throw-away part, they should be readily available.