99% of the ME fasteners are fully threaded hex head screws rather than bolts with a partial thread, studs are really a case of making your own as the permutations of thread, OA length and unthreaded length as so great suppliers could never hold all in stock. Also no stress grading as they tend to be from a free cutting leaded steel.

EKP do machined BA hex head screws, nuts and a few studs.

J

there are tons of bolts and nuts on ebay – I just bought 100 2ba nuts with 3ba hex and every one was undersize! first problem ive had though. Joe at macmodels sels them also.

I hope I'm not too late for somebody … I have found LAS Aerospace to be a good source of small quantities of 2BA, 4BA, 6BA, as well as lots of UNF sizes. They don't do rockets to the moon, as you might guess from their title, but stuff for light aircraft. Lots of sizes of small rivets, too – real rivets not pop, I mean.

http://www.lasaero.com – they are based in Exeter UK

Cheers, Tim