Roofers and DIYers, these Fas-N-Tite roofing nails are professional-grade for all your roofing projects! The hot dipped galvanized finish provides excellent corrosion protection, making them perfect for exterior applications and safe for use with treated lumber. The 1-3/4 inch length is ideal for attaching shingles, insulation board, and felt to wood framing. The wide, flat head design gives you a broader bearing surface for more secure holding power. Conforms to ASTM F1667 and ASTM A153 standards, so you know you're getting quality that meets industry specifications. The 5lb box gives you plenty of nails for substantial projects without constant resupply. Whether you're doing a full roof replacement, minor repairs, or installing new insulation, these nails provide reliable performance that stands up to weather elements. Much better than cheap nails that rust and fail prematurely, causing leaks and damage down the road.