I got asked if I could make these so I made a prototype and the answer is yes.
It's made of brass, and I made this one thick just in case it needed more threads engaged (steel being stronger), but after installing it it seems a lower profile, more matching the original, will work.
Guaranteed not to rust:
$10 for one, $15 for two, posted anywhere in NA.
Let me know if you want thick as shown or thinner...