Nailed it.

I’d say this is fastenating but obviously it’s not!

I work in a manufacturing environment and keep all the weird anomalies that turn up in our hardware inventory. I have screws and carriage bolts with either half-formed or non-existent threads, keps nuts without the built-in washer, fiberlock nuts without the nylon, washers that didn’t get the center hole stamped through all the way, screws with off-center heads, Phillips screws with a ghost of where the Phillips hole should be, zinc-plated screws that only got half-dipped, a pop rivet that had the pin pressed cross-wise through the shank, and my favorite piece is a ball bearing that was packaged with a bee nestled inside the hole.