Dick Hosmer wrote on Nov 18^th, 2009 at 2:05pm:

I've never tried to use a TD screw on a Krag, but I'm fairly sure the threads are identical. I looked at one of those ads - think it says something about emergency? If that is the one, I believe it was some sort of Bubba-fix, like my brass suggestion.  :-) What one really should do is go a legitimate parts dealer (there is a good list at trapdoorcollector.com) and buy the proper screws, even if they are $10 (or whatever) apiece. It is not like they are totally unobtainable. Absolutley no promises as to when, could well be a year or more, but, since I am about done collecting, my 40-year stash of spares should probably be distributed around. Having said that, I do not think I have any Krag sight screws.

I think I might have found a source for some OEM Krag screws but I'm still missing a front sight blade. The screws seem to be harder to find than the sight! This rifle was a wreck but it headspaced on a No-go gauge, so I'm trying to get it back into service. It's coming along, slowly but surely...