Not one, but two head scratchers...

[Btoots]

Hello all, been detecting for awhile and have no clue what these are. The big piece is almost a pound and the holes are not threaded. The other is toast of course, and I've seen many chunks of this type of corroded metal, but this one is strange. Has a square hole in the back, but the holes for the screws appear to be such that the screws are supposed to be mounted from behind. Thought it might be from a vending machines but otherwise, got no clue. Any info would be helpful. Thanks for looking.

 

[ANTIQUARIAN]

The piece on the right looks to be made of zinc and was likely part of a cabinet or door lock.
The round piece with the holes strikes me as being either automotive or electrical in nature.

Dave

 

[ARC]

The piece ANTI is referring to appears to have been found on beach due to its signature salt corrosion... is this correct ?

IMO Aluminum.

 

[Btoots]

Thanks Dave, it appears to be made for some heavy duty use but without threaded holes, I can't see how it could stay in place unless it was pounded in place. I'll keep thinking.

 

[Btoots]

Not in slat water AARC, but in Florida soil.

 

[Red James Cash]

It could of been press fit.

 

[A2coins]

scratch scratch

 

[Gare]

The piece on the left could be some type of roller bearing holder . maybe it could go over a spindle ?

 

[Doubter in MD]

The piece on the right may be sacrificial zinc anode from an outboard motor or an outdrive.