"Do you think I'm a fool? That the Commander doesn't know every bolt- every weld- in his ship?"Galaxy Quest (1999) Did you know you can get a general idea of how strong a bolt it just by looking at the head? It may not apply to every bolt, but it does apply to most. Depending on whether you go by American or metric standards, the process can range from arbitrarily complicated (American) to actually pretty straight forward (metric). SAE The Society of Automotive Engineers created a standard called SAE J429 Mechanical And Material Requirements for Mechanical Fasteners. This applies certain rules and regulations to the…