This has to do more with fabbing than repair.
I want to find some #6 nylon machine screws and nuts. This would make
my life much easier when screwing down TO-220 transistors. I can't use
clips on the stuff I make because the transistors attach to the
enclosure, not individual heatsinks. I have my own insulating sheet
material and I don't want to buy a mounting hardware kit for each
transistor, it would cost more than the transistors. I need
nonconductive fasteners.