This no-longer-lever-up basin 'plug' seems to be made of a curious collection of metals. The main chromed body is heavy, and I thought is was iron based, but it is not magnetic. The screw that has corroded is also non magnetic but too far gone for me to tell what it was made of. The lock nut on it is brass, but the threaded part was grey; and the lever below is iron.
What, if anything, should I try to do with this. A stainless screw perhaps? A messy prospect: or are there standard replacement plugs like this? But why was it made from mismatched metals in the first place?
Cheers, S