Hillman 1/4 In. - #14 3/4 In. Washer Head Self-Drilling Sheet Metal Screw (100 Ct.) Taste Of The Wild 5/16-18 x 1"

5/16-18 x 1"

Tighten with a wrench or drill

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Hillman 1/4 In. - #14 3/4 In. Washer Head Self-Drilling Sheet Metal Screw (100 Ct.) Taste Of The Wild 5/16-18 x 1"Self drilling screws are manufactured for use in wood, fiberglass and metal. They possess a drill point which enables the screw to drill its own hole in thin gauge steel; no pre drilled holes are necessary. The sharp threads create their own mating thread when drilled into the material, and provide a stronger grip to your surface. Perfect for roofing construction, these screws have a neoprene washer that provides a water tight seal, and prevents