Coated with Blue Climaseal, ITW Red Heads Tapcon Phillips Star-Torx-Head Masonry Screws are corrosion-resistant and rated for use in treated lumber and interior or protected exterior environments. This added layer of durability makes them a practical choice for projects involving sill plates, furring strips, or structural attachments to masonry. Designed to meet building code requirements and simplify installation, these Tapcon screws are a dependable fastening option for residential, commercial, and light industrial construction.