Being from New England, I've seen, and suffered many rust problems with various cars. I must state that the pics you posted don't appear to be rust.
I could be wrong, but if you're that concerned about it, I would suggest lightly grinding the offending area, cleaning it with denatured alcohol, and then spraying with truck bed paint, as suggested by a previous post.
Or just WD-40 the crap out of it.
Just sayin'..............
TO
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