Depends on application. Fasteners are typically used in applications where something could need to be removed in the future, like a door panel. Screws are more permanent.
You are exactly backwards. You are much more likely to use a screw for something that will be removed because they come out a lot easier and with less damage than digging out nails.
Nails aren't considered fasteners. Nails are meant for applications where something shouldn't come apart. Nails work best when weight and other items are used to prevent movement.
What? That's simply not true. Nails are used to frame houses and hold on sheathing. There are no weights used to hold it in place or keep it from moving or any silliness like that. Yes, nails are used for stuff not meant to come apart, you got that part right, and that's exactly what I said in my comment.
What? Is "unscrew" not a word anymore?
That only really works when screwing metal to metal and you've tapped it. When you remove a screw holding two dissimilar materials together (plastic to wood), the screw will never hold the same once removed because you'll be cross threading when driving the screw back in, and making the hole bigger. The risk of cross threading is also why you should hand start nuts, bolts and machine screws.
You are correct sir. If it is something that may be removed at some point you would use bolts and nuts instead of screws. Once a screw has been removed it will never hold as good as it originally did. The threads will not be as tight.
Wasn't aware of that distinction. TIL
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