Manufactured for quick and easy installation, electro-galvanized roofing nails are ideal for attaching roof shingles, insulation board and felt to wood framing. The large, flat head provides large bearing surface and strong holding power for a secure finish. These nails have been electro-galvanized for corrosion resistance with a smooth, more aesthetically pleasing finish. Do not use in treated lumber or where corrosion is a concern.