Originally Posted by
rob_s
If, as you say, nobody is dimensionally checking their bolts, and if, as you imply, a dimensionally incorrect bolt is a problem, we would be hearing about mass failures due to.. well due to whatever the specific failure is that this would induce. But we don't.
What we do hear about, all the time but less so recently, is bolts cracking. Miraculously as it turns out, when any one brand has had an epidemic of cracking bolts it turns out to be a company that is not HPT/MPI. Do all companies that skip HPT/MPI have massive failures? No, but to this point every company I've ever heard of with massive failures has been one that skipped the process.