The word you're probably looking for is "grommet"; you might want to look it up and see if that's what you meant or not.
jump rings
steel towers
Probably the same people who make the pencils.
The proper way to hold an American Flag is over the shoulder or in the air, but not touching the ground.
transmission line tower
The metal support used in a fireplace is called a "fireplace grate." It is placed inside the fireplace to hold logs and allow airflow for a better burning fire.
No. It does not have enough gravity to "hold" onto rings, let alone a moon.
Epoxy itself is glue that will hold to metal.
to hold up a flag so it wont fly away
TO give Britain a flag to hold
Tend the flag means to hold the flag stick and attend to the flag in golf. You will remove the flag pole after a stroke has been made by a player.
To hold multiple keys.