Nissan sells them: 08530-71690 SCREW

It is per NES:
08 NES hardware
53 Tapping screw, Oval head
07 3.5 mm diameter
16 5/8" long
90 unknown finish

Thanks DD you are a life saver.

I have a very hard time understanding those codes.

I would buy one from Nissan, less than a buck then you can match it up exactly.

I have tried all the online nissan stores, they are not available.

but i have not tried Nissan directly

Yes, its just general hardware they get out of typical hardware trays. I've bought from Nissan and they don't look it up, the open the cabinet and start looking.

From the part number you can't tell the thread pitch.

I could tell you the size of mine, but all I did was find some fat self tapers that weren't to long haha.

Have given the specs. To the laser cutter but they still want to know what type of oval head on the screw (is it pan head) and diameter of the head .

All that i really need is for someone to be kind enough to remove the factory screw from their ute vents and photograph the head next to a tape measure or digital measuring device. From top and side view.

Thanks.

A is pan head
F is oval head