edison machine screw type

Does anybody know were I can find an 6-40 thread type machine screw for an edison.That bolts down the gear cover, carriage rod, etc. I went to my local bolt store and they told me that a 6-40 thread type is an old timie thread that they don't make any more. I can see why (1915 Edison Amberola 75).

You could try George at Great Lakes Antique Phonographs at http://www.victroladoctor.com/

I'm sure he's have the screws, and his prices are always more than reasonable. I'm in Australia, and have ordered from George, and got the stuff in less than a week.