Kail
New Member
I am running all pex in our home that I am plumbing but I have purchased all copper stub ells for coming out of the walls. The ells that I purchased have a 4 hole flange for nailing or screwing the ells to studs. I have always been told that steel and copper should not come in contact with each other because of the chemical reaction that occurs. Can I use steel screws or nails on these cooper flanges and ells or is that a big no no?