Since I did so well the last time I posted a weird object too identify, I thought I'd try another one.
When I found this a couple of years ago, I assumed it was a tooth in an ore crusher or boring machine. Now I don't think so. I saw another one just like it, and it was nowhere near any sort of mine, road, or for that matter any other man-made object. I'm now thinking it is related to the WWII California desert training, if that's any sort of clue. The threaded stem is hollow, probably a pipe nipple. It seems heavy for its size. Is it a tank part? A bomb part? Any ideas what this is?