Gdetrailer wrote:
As far as strength of the hitch pin goes, don't know exactly, but the same diameter pin is used for 2x2 and 2.5x2.5 hitches.. Just the length of the pin is longer for the 2.5 hitches.. Can't say for sure on the 3x3 hitches but I suspect most likely the same diameter to allow compatibility for using an smaller hitch accessory like a bike rack or lighter weight hitch via adapter sleeves.
Nope, the 3" uses a 3/4" pin. I think that most are using a 5/8" and that is unsafe. Those using adapters would need to drill the holes larger on the adapter and the shank, do you think that ever happens?