Arm your deck or dock with heavy duty, corrosion resistant 316 stainless steel marine fasteners from TackleDirect! Common stainless steel fasteners are not meant to stand up to harsh saltwater environments. That's why industry professionals rely on 316 stainless steel nails and screws when building in coastal areas. 316 stainless steel contains molybdenum, a chemical element not found in other stainless steel alloys, which provides increased corrosion resistance. If your building materials are designed to battle the elements for decades to come, it only makes sense to use a marine grade 316 stainless steel fastener that will stand the test of time.