Well, I might bet nuts, but when you can't buy what you need, you'll have to make it!
One annoying problem I have had för at least a couple of years, is the lack of tubular nuts in M3 dimention. M4 and larger, no problem, but M3... Nope. They are needed to fasten the light switch on my Italian bikes, due to CEV being a bit, shall we say, eccentric. Follow the link, and you'll see how they do it
http://www.pillondorino.com/index.php?_r=2511&id=81&cat=15The lower picture is the complete holder, and the switch is screwed to it with the nuts from below, and the screws from above;
So I made some nuts.
It's one of the first things I have made from metal (ok, so I have made som bushings, but nothing more), and I had to hold a certain length...
Happy Bunny!
Kjelle