An ideal choice for fastening a variety of materials, the 12-24 x 1 1/2 Hex Washer Head TEKS® Self Drilling Screw (T5) Climaseal® (4000) is designed for superior corrosion protection. The screw features a Climaseal® coating that provides maximum protection against rust, tarnish, and corrosion, making it reliable in the toughest conditions.