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Hillman
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 corrosion between surfaces. Zinc. 100-piece per package.
Hillman Yellow Dichromate Grade 8 Hex Cap Screw 1/2" x 2-1/2"
Hillman Yellow Dichromate Grade 8 Hex Cap Screw 1/2" x 6"
Hillman Yellow Dichromate Grade 8 Hex Cap Screw 3/8" x 4"
Hillman Zinc Flat Head Phillips Sheet Metal Screw #4 x 3/4"
Hillman Zinc Hardened Nylon Insert Grade C USS Coarse Stop Nut 1/4"-20