8.4 Other Corrosion-Resistant Fasteners

Manufacturers supply some fasteners with coatings other than galvanization and should be evaluated to ensure their corrosion resistance. ICC Evaluation Service (ICCES) produces acceptance criteria that manufacturers use to demonstrate that product performance is consistent with I Code requirements. ICC-ES published AC257, Acceptance Criteria for Corrosion-Resistant Fasteners and Evaluation of Corrosion Effects of Wood Treatment Chemicals (ICC ES, 2015), which provides criteria for alternative fasteners. The criteria outline requirements for testing fasteners in preservative-treated lumber in various types of accelerated corrosion environments. There are also evaluation reports regarding this acceptance criterion that provide information so that fasteners that are not galvanized or stainless steel can be considered for applicability in coastal environments. Without an evaluation report, manufacturers can often provide some information to allow comparisons with other more common methods of fabricating corrosionresistant fasteners.