Ok. Here is a fastener I see about every day working with my big inventory of fasteners, and thought it was worth posting as trivia. If you saw my post on Facebook (I do sell them), wait to see if others get it first.

Here it is. What is this nut called and what is it used for?

ps. For extra credit and another cigar name another nut that is similar in design and function, but still quite a bit different.