:dodging monkey wrenches:
They might be Carl, but zinc works for corrosion protection also. Cadmium plating probably needs nasty chemicals, and cadmium is toxic as well. I'm not going to mess with that. Nuts and bolts are zinc plated, even the ones you buy today. I think these will last my lifetime.
Finished up that hood support today. Here's some more pics. There are a few shadows, but I expect them to disappear as the zinc weathers a bit. There are also a few spots where the zinc flaked off when scrubbing after the first dip, especially on the arm opposite the mounting bracket. The second coating pretty much fixed that. I think it was because of the smoothness of the metal. So a light blast might help avoid that.
on edit: that's a tiny aquarium pump in the bucket to keep the electrolyte stirred up.