Perhaps the info on the website is incorrect? someone typed a 1 instead of a 2 ???This screw fits an alarm clock made in the early 1900's, so that may be why it no longer shows. It's a decorative screw that attaches the front trim of the clock.
I got the size of the screw from a listing on the website of an expert clock repair and restoration person, who is also a historian on the subject.
Help please! I can't seem to find any supplier that carries 1-56 round head slotted screws. I'd prefer something that can be shined up to resemble nickel plate. Everyone that carries small screws, seems to start at 2-56. Help please!