Hillman No. 10 X 1 in. L Hex Hex Head Screws w/Washers 100 pk

Self Piercing sheeters are specifically designed to fasten metal sheeting with out drilling and have self tapping threads to provide a stronger grip to your surface. These screws puncture the metal roofs and have a neoprene washer provide a water tight seal. These screws have a ceramic finish that is corrosion resistant and recommended for use for treated woods. *