I am glad to see that my question was not as "dumb" as I thought it might be.

The problem remains though. I have a little bag of several sizes of Hobie rivets with no way of really identifying them.

I wondered if the second number was a millimeter measurement, but I just don`t know and it seems silly to guess - there must be a measurement correlation.

I looked through past posts and it seems the question has never been answered fully and the issue has been carefully "danced" around on several occassions. Apparently, I`m not the only one reluctant to admitt that they don`t know what those little numbers (ie. 6-6) actually mean. Hopefully we can "crack the code" of the rivet here! And, what an accomplishment it would be!


Dave