There are ten banjo bolts on each side of the banjo (20 total).
These are special bolts; examine them to be sure they are original. They should have a space between the head of the bolt and the threads. This is to prevent oil from spiraling up the threads and causing an oil leak. The head of the bolt will also appear to be thicker than a normal bolt....From Tom Endy's informative article
found here.....
http://www.santaanitaas.org/wp-conte...vised-2014.pdf Also, do not chase the female threads on the banjo as it will affect their ability to seal oil.