Hey y’all, I dug this little brass screw on an old house site. It could be modern contamination, but I have never found anything like it. It is square headed. Could it have gone to furniture? Could it have gone to a firearm? I have found melted lead and gunflint before, though I think it likely to have come from furniture rather than a firearm, but I will be interested to hear y’all’s thoughts. Thanks!