Thanks for posting that. Great reference web site for that sort of thing. I didn't go that deep in to the web site, but I wonder if they carry some of the specialty screws and bolts, such as those we need for locks?
I've been restoring several of my suppository guns (such as my old lever and slide action Winchesters), and I've been struck by the fact that on each gun, no two screws are the same. Same thing with the pins. That makes it practically impossible to reassemble the gun incorrectly. And, just about impossible to find replacements for them! Because of the unique nature of so many of the screws, it's my guess that the gun manufacturers made them all themselves within their production facilities rather than buying them as "standard configuration items" from other manufacturers? That makes sourcing odd size replacement parts 100 years later somewhat more problematic.