Re: [Amel Yacht Owners] what type of product to put on bolt attaching the windlass to deck?
Bill Kinney <greatketch@...>
James,toggle quoted messageShow quoted text
Yes, bronze and stainless threads are pretty much always happy together. Which is why I have always thought that using stainless steel turnbuckle bodies (rigging screws) was such a dumb idea. Running on the stainless threads on the rigging studs under high load, if you weren’t really careful (and sometimes where you are!) they can lock together--forever. Bronze bodied turnbuckles are readily available, and if you need the “shiny” look, just get the chrome plated ones.
As for the why, I am not sure at the molecular level, but I suspect that the surface of the bronze just is not hard enough to scrape off the very hard chromium oxides on the surface of the stainless. But that is just a guess, and a real metallurgist will have a better, and probably mush more complex, answer
When I install something on deck like this, I typically use butyl tape rather than silicon sealant. It provides a lasting seal that is easily removed when needed, works with any materials, does not make a mess, it’s very inexpensive, and it has a long shelve life. All nice things for inventory on a cruising boat.
SM #160, Harmonie
Narragansett Bay, RI, USA
“Ships and men rot in port."