To get the final torque AND stretch on the bolt, you tighten the bolt a given number of degrees of rotation. This is what the torque angle guage is for, accurately measuring the degrees of additional rotation (typically accurate to a degree or so). The Reason For Not Re-Using Stretch Bolts.
T. rex had a mouth full of serrated teeth; the largest tooth of any carnivorous dinosaur ever found was 12 inches (30 centimeters) long. But not all of the dinosaur's teeth served the same function, according to a 2012 study in the Canadian Journal of Earth Sciences.
Megalodon didn't earn its name (giant tooth) for nothing. The teeth of this prehistoric shark were serrated, heart-shaped, and over half a foot long (by comparison, the biggest teeth of a Great White Shark only measure about three inches long).