Strong-Point 86MZ 8 x 0.75 in. Phillips Modified Truss R-W Head Screws Zinc Plated Box of 8 000 Meets ASTM A 510 for carbon steel manufacturing. Multipurpose sheet metal screw for light to medium gauge applications. Zinc plating meets ASTM B 633 for electrodeposited zinc coatings. Material Application - Attaches wire lath to wood or light gauge metal. Family - Drywall Screws.