Wood screws conform to ANSI/ASME B18.6.1. Screws shall be corrosion resistant by coating, galvanization, stainless steel, nonferrous metal or other suitable corrosion-resistant material. The corrosion resistance shall be demonstrated through one of the following methods:
- Corrosion resistance equivalent to ASTM A641, Class 1;
- Corrosion resistance in accordance with TAS114, Appendix E; or
- Corrosion-resistant coating exhibiting not more than 5 percent red rust after 1000 hours exposure in accordance with ASTM B117.