If you're not going to redo the connection often, just run the bare wire through the hole and tighten it down hard. As long as it's really tight, it won't oxidize at the actual contact point. Don't tin it; that will just make it oxidize faster. Crimped spades are the best if you want to spend some money.
5 way binding post connection advice
looking for advice on hooking up 12 awg wire to binding posts. My speakers have a large enough hole in the post to run the bare wire through, so I dont need a secondery contact point as with an adapter. My amplifier and suwoofer have 5 way binding posts that I will need a connector. Locking banana pins sound solid, but I am looking for advice from someone who may have tryed the options. Thank You, and enjoy your holidays, Guycom