The four SS brackets we got to go onto the dodger frame came with different fasteners. Two had Philips screws and two had bolts. We plan on changing all to bolts and adding SS lock washers, and not using the plastic washers that come with them.
The screws that came with the “Helm” clamps are SS and are two short to go through the aluminum. They need to be about 1\2 longer, maybe 1\4 inch. You could use the plastic washers that came off the SS clamps for under the SS screws when attaching to the aluminum. I am going to the fastener shop today after work to see if I can get longer aluminum screws if not then longer SS ones. So the bottom of the black plastic clamps are missing as you can see.
There is a dock mate who has installed his Solar panel (SP) and used the clamps this way. I will take a picture tonight. He also had to get longer screws. Hep put the SS bracket that came with the clamps on the bottom for strength as the aluminum will take care of the top for strength. You will see in the final install. Also get some egcorn nuts for covering the open threads.
Because we did not have the correct fasteners we could not finish. We were able to get the height set up and the distance to install the aluminum plate on the SP bottom. This would vary on each dodger frame. We did get all the holes drilled the mounting aluminum cut and drilled and the SS 1” cut and installed.
The use of two 1” pvc pipes bungied to the dodger frame to start out with was handy for holding the SP and sizing things up.