On Mon, 17 Sep 2012 19:46:24 -0400, Ed Pawlowski wrote:

It is one of the strongest bolts available for tensile strength.

That's good it's strong on tensile strength because I want to use it to
remove brake drums.

Based on the charts, it seems that the word "Class" is merely the metric
(i.e., ISO) set of standards while the SAE uses "Grade" and the ASTM uses
"Type" and "Grade" - but it seems they all connotate the same thing.