188 Stainless steel, 304, 316 Stainless Steel Corrosion
Seawater makes a good electrolyte, and thus, galvanic corrosion is a common problem in this environment. 188 series stainless fasteners that work fine on fresh water boats, may experience accelerated galvanic corrosion in seawater boats, and thus it is suggested you examine 316 stainless.