316 vs 304
Hardware Graded by Distance From the Water
Coated deck screws rust inside a joint, leave dark streaks down the legs and eventually lose their hold. Pieces for homes east of the Intracoastal get 316 stainless, while 304 goes everywhere else. Carriage bolts with nylon insert nuts let you tighten things up years later, and every joint is a glued mortise and tenon, so the metal serves as backup instead of carrying the whole load on its own.






