Even if it does come loose, it’s going to take a lot for the bolt to slide out while under pressure of the shock, but the threads on it are tight, and the nut itself is a nyloc nut. The torque is somewhere in the 400sIm betting most shops just hit it really well with a strong impact gun. Many guys who have worked on these trucks probably have a feel for it with there big gun. Would hate for this to come loose!