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 and 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 watertight seal and prevents corrosion between surfaces.
- Self-drilling screws designed for power driving wood or metal to metal
- Drill point drills its own hole, taps mating threads and fastens firmly in one operation
- Steel backed neoprene washer for water proofing
- Zinc finish for moderate corrosion protection
- No need to pre-drill a hole
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