To thoroughly understand it all would require at least 4 specific engineering degrees and 20 years of hands on experience in each. Nothing is forever, but take our word for it, ARP® is the only game in town today. Just about every successful racer today uses their stuff 100%. You can help yourself in reference to material specs, thread lubes and torque techniques, also in fastener maintenance and handling. If you do a good job here, you’ll never lose position in a race from fastener failure