Spike? Giant Nail? Help...{New Pics}

[chrisplay2004]

So I started hunting this old park I found on an old map.
The trees are still there and the grass is long gone.
It is hidden by a baseball field.
It became a park in the 1930's and has not been a public park since the 1970s.
I actually collect old nails and railroad spikes but I cannot find anything on this one.
Under the cap seems to be a hex head nut shape.
I will start the electrolysis tonight and post new pics later.
Any ideas welcome...

[Gunrunner61]

I think.....that it may be the spike that holds the bases in place.

[chrisplay2004]

Thanks for the lead it was something I never thought of.
However, I Just spent a lot of time looking at thousands of photos of bases using many types of search criteria with no luck.
Most of them are attached to the base and insert into a tube, usually square, that is sunk into the ground.
In addition, I found this nowhere near the baseball fields in an isolated closed off part of the old park.
There is only one way in and one way out.
It's going to take me months to search it out. Can't wait to see what else I find...
Oh, it is now taking a long electrolysis bath.

[chrisplay2004]

So after 3 days of electrolysis it came out looking great.
Now you can see that there are threads on the spike part.
There are no markings on it anywhere.
I looked at thousands of more pics using many types of search criteria and still nothing.
However, it now part of my collection...and one of my favorite nails, spike or whatever it is.

[GpSnoopy]

Spent way too much time looking for what I thought it may be, but to no avail. On older farm equipment, there were a lot of adjustable components, parts and linkages that needed to be lined up and secured. I'm thinking that this was a pin for such a job, possibly home made to replace one that was lost. Pointed so that one could hammer it in when the holes did not quite match up. I recall a few items that had to be adjusted often. Swing augers on old combines, swing hitches to convert from transport mode to field mode, etc.