Mystery Object

[Garnfadryn]

Hi!
I'm hoping somebody can help me identify these metal detector finds, assuming I uploaded the photos correctly of course! They look like they are made of brass, and two of them have iron or steel melted or corroded around them.

I found American 30-06 and 50 cal cartridges, a fired bazooka practice shell and the top off a pineapple grenade in the same spot.

Thank you!
Jules

[Garnfadryn]

We found a better example today. You can clearly see a split pin on one side, and what looks like a spring or a button on the other. We also found an interesting tag!

Has anyone got any ideas???

[Garnfadryn]

[UK Cousin]

They look like mine fuses. To which ones I don't know. I would start there.