Screws for Fastening Wood to Concrete-HILLMAN No. 10 X 1-1/2 in. L Hex Hex Washer Head Self-Piercing Screws 2500 lb 1 pk
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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