Gibraltar's 1-1/2 in. wood screw fasteners are specifically designed to install metal roof panels and trim to wood decking. The color-coated fastener head matches panel colors and protects against corrosion for a long-lasting life. The built-in neoprene washer provides a weather tight seal. This screw includes a high-low thread pattern that provides superior pull-out strength and strip resistance. Recommended for roof slope of 3/12 pitch or greater.