Rivets

["3liter" <saltfever@comcast.net>]

Get a copy of Mil-Spec MIL-R-47196A (or latest rev).  "Rivets, Buck
Type, Preparation For Installation Of". It will tell all you want to
know about rivets.  There are some very good tables for all the critical
dimensions you need.  Avery Enterprises (817-439-8400) was an excellent
source of all things for riveting.  They made up tool kits for
experimental aircraft builders. Many builders raved about their quality
and service.  My last contact with them was about 10 years ago so don't
know current status.  Aircraft Spruce, as already mentioned, is also
good.  -Elon