Hillman No. 10 X 1-1/2 in. L Hex Washer Head Self-Piercing Screws 2500 lb 1 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 se