Bolts today are typically Chinese junk. We have a huge list of counterfeit bolts that we cannot use. Not all are the same.
With that said, anyone who can shear a 5/8" bolt in a mild steel tube receiver should get some national recognition.
The reference to the man killed by the flying receiver failed to mention it was a drop hitch that broke at the weld....not the pin.
To put a receiver in perfect shear would require dead even tongue height. Most hitches are some level of drop and that acts much like the sliding side of a pony or bessey clamp.....you're not likely to break even a diamond hard or butter soft one.
Actually, if you see the pics the hitch didn't break at the weld- the drop tube broke in the middle of the tube - complete metal failure. The point is you need to know how to calculate the actual pulling stress- Matt did a quick calculation that the mud suction the Ram was stuck in was causing the 7000 lb truck to create approximately a 13000 lb pulling load. Without proper equipment this is beyond most equipment being discussed here. Whether a proper hitch pin would have handled this I couldn't guess, but it seems they use hitch pins to hold the proper stinger for connecting their pulling straps and kinetic ropes....