Self-piercing sheeters are engineered to fasten thin pieces of metal to wood, fiberglass or metal primarily through a pre-drilled or own generated hole in light gauge metal. Perfect for roofing construction, the featured neoprene washer provides a water-tight seal and prevents corrosion between surfaces. These screws have a ceramic finish that exceeds the 1000 hrs salt spray test and is recommended for use for treated lumber.

• Self piercing screws penetrate metal and tap their own mating threads
• Steel backed neoprene washer for water proofing
• Gray hue to match metal sheeting
• Ceramic coat provides superior rust and corrosion protection
• No need to pre-drill a hole in thin metal