What is this piece called?

What is the piece attached to the grounding wire called?

twoleftears Details Discussions Posts This discussion Message User 5,331 posts 05-23-2022 at 02:22pm Copy Comment URL Report Comment Edit Delete Geez. It's terminal con ojal. And terminal is masculine. Sorry.
antigrunge2 Details Discussions Posts This discussion Message User 1,485 posts 05-23-2022 at 04:30pm Copy Comment URL Report Comment Edit Delete Anular terminator?
theexaltedarchduke OP Details Discussions Posts This discussion Message User 8 posts 05-23-2022 at 10:16pm Copy Comment URL Report Comment Edit Delete Hringur in Icelandic (apparently)
geof3 Details Discussions Posts This discussion Message User 1,129 posts 05-23-2022 at 10:41pm Copy Comment URL Report Comment Edit Delete Sorry, everyone is just wrong. That is indeed the flux capacitor. Use it wisely, it will serve you well!