Sorry for the bad news... No, they can not be interchanged. The posts are different lengths from the shell. I work at a music store, and we tried to order the metal ones to resurrect his stage custom nouveau snare. The different length posts angle the lug inward, causing binding of the tension rod, and doesn't sit quite right on the tongue/groove part, and pops off under vibration. I agree with what's on your mind right now. That's a corner that should not have been cut.