Originally posted by brasspick
If your talking about the screws that join the neck to the coordinator rods, the proper name for them is "Hanger Bolts". The good news is, you can find them at Lowe's, probably Home Depot, etc. Most Banjos use 10-24 hanger bolts, but I think SAGA uses a bigger bolt. You should be able to find either, pretty cheap.
Some banjos use 10-24 threads, old GIbsons used 10-32 (or 8- 32 on some really old ones) and thus newer Gibsons, in an effort to be like older Gibsons use 10-32 threads. Furthermore, many builders, in a effort to be like older Gibsons, do too.
I've never been able to find 10-32 lags (OK, hanger bolts. (the banjo vernacular is "lags")) at Lowes, Home Depot, or even specialty fasteners shops. Apparently that is why First Quality and other suppliers of banjo parts stock and sell so many of them.