Rail coupler hitch pin?

[canes2016]

Detecting at an old railroad station site and came across this 12” pin. My inclination is to assume it’s a hitch pin used to prevent couplers from opening.... However, the diameter wouldn’t appear to be hefty enough to stand up to the torque?

Any guidance would be appreciated.....

Bill

 

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[bowwinkles]

Much to small in diameter to be used as a train coupler. It does appear to be a double tree pin for a horse drawn wagon.

 

[ticndig]

part of a turn buckle .

or eye bolt

 

[desertexplorer]

Here’s a 5/8” x 1 ft long telephone guy-wire lag eye screw: