Wraparound bridge studs 60's Epiphone/Gibson

[jeffreylucky1]

I am trying to restore a vintage 65-66 Epiphone Coronet to factory specs. Someone replaced the wraparound compensated bridge (which only acted as a normal bridge since the tremelo held the strings) wit a floating wooden bridge. The factory stud bushings are still there. I need to know what threads they take and where to find studs. I purchased a bridge and the studs appear the same size and will start to thread in, but the threads are not quite correct. I am told thet these are Gibson parts also used on LP Jr's, Specials, TV models, etc.