<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Charley Lillard</div><div class="ubbcode-body">Steve...Only 1 with the hex head. The rest are round. The hex looks the same as used on door weatherstrip.

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Just an observation, but those look like the typical RPO B96 Wheel Opening molding screws, used across multiple car platforms as well as trucks to install the chrome molding.
In fact, in the truck plant, if the screw hit torque without being fully seated, the repair guys would simply smack them with a hammer rather than drive them in the rest of the way with a screwdriver. Hence, their more preferred name:
"B96 nails".
(lol)
K