![Laughing :lol:](./images/smilies/icon_laughing01.gif)
Well, at least it took a couple hours for you guys to get this one. Yes, this is the rear cab hold-down plate for trucks with the behind-the-seat storage compartment. There are two holes drilled into the bottom of the storage compartment that are a hair smaller than the diameter of the acorn nut on this plate, and the compartment sets down on these acorn nuts.
I think I'm gonna call two winners on this one. ezernut9mm kinda called it...I suppose you might loosely call this a clamp, though it was 4x4x4crewcab who positively identified it, so they get to share this one.
![Thumbs up :thup:](./images/smilies/icon_thumright.gif)