So are you putting a truck back together? Do you have any of the original hardware? Do you just want to go and buy a bunch without knowing the size, the length.......? Not trying to be a hard A, but tell us what you are actually doing and what pieces you are assembling. You are, at present, being too general. Answer my questions so I can help you get done with whatever you are wanting to do. I could guess, but what good is that? Every part has a different size, finish, pitch, length and head. Sheet metal screws also. Bed bolts could mean holding bed sides and bulkhead together or it could be holding the wood on or the crossmembers or ..........
Hardware is not that hard to figure out. I want to help you, in a general way, to be able to do that. For the future. Truck people need to know how to figure out their own hardware and not try to get a magic list. There is none.
You could, I guess, study a giant old parts manual if it states the full size. Factory Assembly Manuals show the size most times.
But better to learn a few simple ideas.


Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn