Civil War finds?

[acm3]

I have a spot I pull a lot of CW items from. Here are 3 items I am not sure what they are. All are iron.

 

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[acm3]

I have received so much help on items I have found over the years. No responses? Really? Come folks...I know you can do it !!! . PLEASE

 

[Joe-Dirt]

My guess would be iron wagon parts and horse tac, but am noooooooo expert

 

[Tony in SC]

The fourth looks like a cinch eye for a strap. The rest look smith made and could be one-of type stuff?