Fox Mike said:
Another good source is Fastenal if there is one near you.
Well, there is one near me, in Rice Lake, WI and, they will no longer sell fasteners or cutting tooling to small businesses like myself. What these guys now do, is contract with manufacturers whereby they come in and restock their tool cribs with whatever fasteners and cutting tools they are getting low on.
I used to take my endmills and cutting tools to them and they would send them to their facility that does cutter grinding and sharpening, even on the step-drills I use for barrel lining. Not any longer. Now I need to send those out to a place near Madison, WI, and wait a week or three, until they come back.
They never had the fine pitch threads for guns that I needed, and when restoring old Stevens Favorite rifles, I tried like mad to get a #6-26 threading die from them. Would've had better luck finding a blond 19 year old gal in Afghanistan.