🔎 UNIDENTIFIED This is a weird iron object any clues?

[savinghistoryalway.s]

 

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[Almy]

I can see thread on the round part. A tapered square shaft like on the other end usually indicates it was forced into a round hole in wood for a snug fit. So think of applications where it would be bolted into something (the threaded end) and something wooden placed on the square end. Wagon maybe? Or part of a building?