The screws listed above are unavailable but these 6209043082 look the same and are listed as the same size and in stock also, they have 2 versions of the #2 x 5/16 in silver in stock (6101100516 & 6208314516), not sure if they are exact replacements. If you are ordering $28 in trucks it is worth adding 2 each of these screws. If the silver versions work, as long as you are replacing the trucks and if you are concerned that they are not black, a little black pain or magic marker and another $1.80 you are good to go.
Or you you can buy 100 from MicroFasteners, I have done this (they are fantastic to do business with, sent him my screw and he matched it).
Mike
PS: now if I can only find the screw size of the 4 screws that hold the center span of the 213 Center Lift Bridge in place when it is in the box!!!