Fruit – Do raisins have a maximum shelf life

After that long, the beans are almost certainly stale. While it's true that aged coffee is a thing, four to ten years is very long time to age coffee and the opinions on aged coffee seem to be mixed at best. I say toss 'em, although you could compost them or even use them for arts and crafts, I wouldn't recommend them for human consumption. It's doubtful that anyone would be harmed, seeing as caffeine is a natural pesticide and that would keep any 'ick' from developing, it probably wouldn't be a very enjoyable cup of coffee.

Yes, nuts are very fatty, and they will eventually go rancid— if this is the case, they will taste very poor. They can also dry out, or in more rare cases (especially if stored improperly) be infested with insects or molds.

Generally, they should be good for six months to a year at their best flavor, depending on the variety (in the shell).

Five years is a little long. I am not sure I would want to eat nuts that old.