Stainless steel wood screws for use with all chemically treated materials, plywood applications and all wood applications which are exposed to weather, high moisture, and other caustic conditions. Provides extra corrosion resistance & works excellent on projects where staining is required. Silver Star 305 Star Drive stainless steel wood screws are manufactured from the finest stainless steel alloys. Highest nickel content of the 18-8 stainless steels, delivers superior corrosion resistance, eliminates discoloration and staining around screw heads and is unaffected by tannic acid and other extractives found in cedar and redwood.