After firing up the Indian Chief a few times and having got it running, I was cleaning up and apparently this fell off or out of the motorcycle. It is 2-1/8" long, about 5/16" round, threaded on one end and unthreaded on the other. The hole does not go thru. The threaded end depth is about 7/8" deep and the unthreaded end the hole is just over 1/2" deep.
I don't know where it fell from but it landed just behind the centerstand left leg.
Any idea what this is - is it even a motorcycle part?