ID this object I pulled out of my tire.
 

This thing has no sharp edges or points and was buried all the way into my driver's side front tire. Took forever to pull it out of there, but I did and the plug seems to be holding up. WTF is this?

https://live.staticflickr.com/65535/...e29e90e3_c.jpg

Its close. 1881 Double Ended Silver Scent Bottle Sampson Mordan

http://forums.pelicanparts.com/uploa...1699411348.jpg

Looks like one of the receiver cross pins from a 10/22 to hold the trigger group in place.... diameter to length is wrong for the same parts on an AR (2 of 'em.... unless you have some paperwork and the 3rd hole)

It’s a quarter ffs. ��

Just a guess. From a chain. The bit that the side pieces attach too.

Something that was spinning or rotating for a good part of its life.
Maybe a pivot rod of some sort off of a motorcycle?

Judging by the size, I vote for a piece of motorcycle chain.

Bicycle hub?

It's gotta be a motorcycle chain rivet. Something with double side plates. You can also see two areas of light wear on the centre consistent with holding a roller or going over a sprocket.

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Too long for motorcycle chain.

I'm thinking some sort of industrial/agricultural chain pin. Somebody replaced it and set it on the frame of the machine and left it there to fall off on the freeway. Looks like it was hammered, pushed or worn apart on the one end. Like a chain that was not running true or had a sideways load.

Someone took a lot of effort to stand it on it's edge on the asphalt.
A nickel would have been easier.

Some sort of release pin from a shackle or hitch lock component....

Yes, there are many hitch locking pins that look very similar. The wear marks are consistent with that.

That was my first thought as well.

A pinky finger distal phalanges from a model T-100 series terminator.

IMS from a 996. Did you find any ball bearings near it?

I agree that it looks like part of a master link from a big Ass chain