N56912-S2

These are Ford #N56912-S2, which is Auevco #13026 and Fastenal #0162759, and they are #8x18 sheet metal screw with a 15/32" Phillips washer-head and they are 3/4" long. The MPC shows the screws holding the fender liner ("apron" to Ford) to the fender as being #55927. And in Ford's MPC that equates to a #8x18x1/2" pan head machine screw, meaning that it has a head without the washer. But all of the early trucks I've seen use this screw, while later trucks had a hex-head screw. (DSCN7443)