I should also mention that standard analysis procedure around here is to ignore friction (and therefore bolt tension) on bolted joints that are in shear, so they are not expected to be super tight anyway. Having tight bolts is "gravy" in the conservative stress guy's mind, because his design does not count on it, because you can't count on it staying tight forever...
Mark Langford, Huntsville, Alabama see KR2S project N56ML at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.net
