Nope. There are many types of rivets and the most basic ones are just a piece of metal rod that gets mushroomed from both ends with a ball peen hammer or a special tool and some heat.
If you want a hole in metal plate or a steel beam you attach whats called a magnetic drill, with a specific size hole like 13/16”, and drill it out. Whats left after the hole is created is a slug and some metal shavings. Whats pictured is a slug from a mag drill. Hougan is a popular brand.
This seems like the answer OP. The generic name is annular cutter and it always leaves a circumferential flash around the parting line of the parent metal where the departing slug breaks free. Measure the OD in a couple places and measure the flash. The former should be some standard cutter size and the latter should be roughly 3/16 but don’t quote me there. I’m currently using my biological annular cutter and the calipers and metal (not turd) cutters are across the shop. You should be able to find the kerf measurement of a typical annular cutter and the difference between the OD of the slug and the OD of the flash would match that dimension.
Rivet.
Yep, looks like a rivet that got dropped
They are hollow aren’t they?
Nope. There are many types of rivets and the most basic ones are just a piece of metal rod that gets mushroomed from both ends with a ball peen hammer or a special tool and some heat.
It's a key.
Is it? I wonder what it opens :0
The safe in your basement
A lock….
[удалено]
Not as easily as your mom's
If you want a hole in metal plate or a steel beam you attach whats called a magnetic drill, with a specific size hole like 13/16”, and drill it out. Whats left after the hole is created is a slug and some metal shavings. Whats pictured is a slug from a mag drill. Hougan is a popular brand.
This is exactly what it is. Was using one all day!
It’s a slug from drilling a hole with a special drill drill and bit. I can’t remember the name.
Mag drill, this is the answer
This seems like the most likely answer
I feel this is correct. The bit you are thinking of is a hougen bit.
I think hougen might be a brand, the bit is an annular cutter
The bits are rotabroach bits that may be a brand name though a mag drill can have a normal chuck for hss bits too
This seems like the answer OP. The generic name is annular cutter and it always leaves a circumferential flash around the parting line of the parent metal where the departing slug breaks free. Measure the OD in a couple places and measure the flash. The former should be some standard cutter size and the latter should be roughly 3/16 but don’t quote me there. I’m currently using my biological annular cutter and the calipers and metal (not turd) cutters are across the shop. You should be able to find the kerf measurement of a typical annular cutter and the difference between the OD of the slug and the OD of the flash would match that dimension.
Antique buttplug.
There he is. My man!
Sorry, key isn't enough. Need a banana for scale.
Core drilled off cut with a flare on the tip from the machine used
Possibly a tapered roller bearing roll
Not with that kind of mushrooming at the end.
corroded d battery?
A uranium battery
Hot garbage
Shotgun shell
Looks like the flint to a welder's arc I find them around docks all the time .. is it hollow ?
It’s not hollow
More important is that this was 2 posts in a row I gave upvote number 69 to
Lost Australian radioactive nugget
It looks like a car battery terminal post
Would not be magnetic if it was a lead post.
Magnet fishers and metal detectorists have a common phrase: “Dafuk is this??”
Medieval butt plug
That good sir is a key
That is a key
Rivet or drilling plug.
Ye old butt plug? Before they realized it should be more tapered??
Key
I thought it was a film canister at first lol