Quoted from Wescobar:This whole thing started because I was looking for a colored lock nut for personal use and could only find metric nuts available. Using a conversion chart I ordered the closest nut available and was disappointed to find they didn't fit. After thinking about it for a while I went ahead and had some #6 nuts made. I've got a new batch of #6 and #8 coming in the next few days
I think that is how most of us end up with "little businesses" associated with the pinball hobby. Need something - can't find it - figure out a way to get it - then decide to try selling it to others who might be looking for the same thing. Sadly over time this seems to take some of the fun out of a hobby.
I think the nuts are a neat idea but if I put them on most of my machines the nuts would look nicer then my machine.
Best of luck to you with this!