I have two of these that were dropped at some point. The plastic is broken out where the nuts that hold them together were. I can redo the area, but I need to replace the "nut and bolt". Any sources for really small hardware out there?
I am not familiar with those switches, but you might try here for small nuts & bolts - Micro-Fasteners
The nuts are part number 022-69, 5132-69 or 6SP-5132-069. The screws are 4-36, 1/4 inch.
Have you tried Chuck Sartor for the parts?