When nothing but the best will do, Grip-Rite MAX Stainless screws are the preferred premium exterior construction fastener on job sites - especially those located in areas with high humidity, around pool areas or near the coasts. Grip-Rite 302, 305 & 316 grade stainless steel screws are ideal for fastening decking, siding, roofing, finish & trim and are the best choice for use in cedar and redwood construction. Deep cut threads and T-15 & 30 star drive heads are standard on all Grip-Rite MAX Stainless Exterior Screws, increasing holding power and quick engagement for a solid connection.