6.1 Hemi Internals.

You don't have to agree. I'll just refer you to "machine design" where you can study up on fastener stresses.

The shank of the bolt is elongating. Not all fasteners were talking about are necessarily torque to yield. I'd tend to agree that a bolt that's not torque to yield can generally be reused. However it possible that the torque specs on traditional fasteners are based on yield point in which case it's still torque to yield.

Many a broken off stud in an engine block or cylinder head. Just Google how do I get this broken off bolt out...