Since I’m a newbie, I needed a few quick references. I made the first one awhile ago to put in the shop, and the rest I found on the internet. All good information. Of note: While the rule of two times the rivet diameter is frequently used as a rule of thumb, the MILSPEC tables below are slightly less than 2D. I use a pair of digital calipers to see if I’m within spec. Anyways, enjoy.