“Hardware” is used to support or connect wood or engineered wood products to one another. Metal hangers are designed for various applications.
Connectors are tested and evaluated by all governing agencies to ensure that they meet published design loads. In regards to engineered wood systems, the connectors are chosen based upon loads of each condition and are included in the package provided by EWSolutions.
Simpson Strong-tie is clearly the leader in hardware, especially when it comes to new pressure treated wood and corrosivity.
This is a great publication: Simpson corrosion info.pdf