I want to get a hitch cover but i need a Locking Pin in order to keep it in place, im not planning on towing anything, wich size is the right one for a 2006 F150? i know Valley, Trimax, Pilot and Masterlock make Locking Pins but i can't find the application, i'm guessing its a 5/16 but i don't wanna go by that lol, any help will be appreciated!

 

they are all the same size just make sure the pin you get is for a class III or IV hitch and you will be good. you can get them just about anywheres

 

5/8"