Is this a crack in Rod cap?

[rothfm]

Hope pic posts, havent had luck with pics lately.

Was reusing my rods and caps on a rebuild, and noticed this line. It was dark so I lightly sanded it so I could see it better. Not sure if its a crack, or what?
I can just barely feel it with my fingernail. But the others sure dont look like this.

 

[rothfm]

trying the pic again. Geeze, done lots of pics in the past. What Gives?

 

[81 Checkmate]

Try photobucket.....the site picture host is down

 

[rothfm]

Looks like the pic went up...Anyone have any thoughts on this Rod cap. Looks funny. Going to use another tomorrow anyway. I'm guessing this is a hairline crack on the surface. Cant take the chance on it.

 

[rothfm]

Trying again, "upload from URL" pointed it to my photobucket Direct address.