I am wondering whether a typical mechanic can break a bolt using a wrench.
For example, let's say the wrench is 15" long and the force is applied at a radius of 13". The mechanic applies a force of 40 pounds. Imagine the thread of the bolt is 3/8" in diameter and has 16 threads per inch. The bolt has an ultimate tensile strength of 150,000 PSI.
Will the bolt fail and break apart?