Hot answers tagged pressure-treated
In general, the codes require fasteners to be of hot-dipped, zinc-coated galvanized steel in accordance with ASTM A153, type 304 or 316 stainless steel, silicon bronze or copper. [source] FWIW, everything you ever wanted to know about pressure treated wood here.
Stainless is the most reliable way to go, though hot-dipped galvanized is also an option. It wasn't an issue until CCA was phased out a few years back.
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