I think square nuts were good with the ole “monkey wrench” before the “crescent wrench” was invented. I dunno though, like me, a lot of folks just take old parts that they replaced and throw them in a box just in case, or whatever. I’d say some kind of old front end component if it weren’t for the ratchet issue. Can we be sure about that? Could the ratchet just be to position it and then tighten it down so it doesn’t move? We only have a short number of years before anyone that knows anything about this stuff will not be with us anymore, so we’d better hurry.