"Bob Lowe" wrote
in message
roups.com...
...And as you may surmise, I should surely understand the
strength of a bolt to get anywhere with this.

You can make a quick guesstimate of tensile strength from 100,000 PSI
times the area of the thread root or the tap drill. Shear strength is
about half of that, for the shank or thread root, whichever applies.
For better numbers:
http://www.ti64.com/v/vspfiles/asset...ners%20101.pdf
Ksi = KiloPSI.

jsw