@80Nomad
Sorry, I couldn't tell exactly where your fasteners were, so I gave you all of them I thought you needed.
For the (5) per side you need 90119-06420 (replaced/supercedes 90119-06186). M6 x 1.0, 20-mm long; note this is a machine thread fastener. This screws connects to 90467-11028, Clip.
All the other screws I gave you are self–tapping screws.
I have running boards, so my setup may be different from yours. There are three different fastener pairs (screw/grommet) in rear lowest edge of the flare:
(a) one pair (90159-60510/90189-06196) for the mudflap,
(b) one pair (90159-60416/90189-06196) for the mudflap and running board (these screw/grommet pairs use the longest screws), and
(c) one pair (90159-60182/90189-06005) not covered by either.
» You could use 90159-60182 screws, if you use 90189-06005 grommets with them. Those are one of the three pairs of fasteners I have on my flares, and they are the ones that are not covered by either the mudflap or running board.
» Note: the other grommets, in both positions on the rear lowest edge of the flare are the same. I haven't tried the self–tapping screws with the 90189-06005 grommet.