The name on the metal disc (4)

'the name' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'the metal disc' is the wordplay.
I cannot really see how this works, but
'metal' could be 'tin' (tin is a kind of metal) and 'tin' is located in the answer.
'disc' could be 'o' and 'o' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...

'on' is the link.

Can you help me to learn more?