I have pontoon boat and I want to mount a fishfinder on my console. I believe the console is fiberglass that is about 1/8 inch thick. The fishfinder mount is a bracket with four holes in it to insert screws (no screws came with the bracket). The holes can take a #8 or #10 screw.
After a quick check of the hardware store, I see that I could use (a) machine screw with nut, (b) thread forming screw, or (c) thread cutting screw. The thread forming and thread cutting screws interested me. When do I use them?