Hello all! Was hoping someone can give me a hand in finding the part number for these screws, there are 8 of them on the top portion of the tailgate, they screw into these rubber covers/boots that are on the top part of the tailgate assembly. The screws seem to be self locking or something...

I have a long screw - maybe about 12 inches long that has dropped from under the dash. Have only had the car for about 1 week. Searched the forums but cannot find any info. Does anyone know what this could be? Thanks....