an example would be 

Robert - just to prolong this I noticed in my local Ace hardware store, which has a wide selection of fasteners, the smallest wing nuts were #6. Of course a regular 4-40 nut would work too, but they

Also, the hole in the Twine is practically the same size as the #6 machine screw and had to be threaded though. It fits, but it is tight. So for the ability to easily slide on and off, a #4 screw ma