Product Info Catalog Hardware Fasteners Nails Pressure-Treated Lumber Nails, Ring-Shank, 16D, 3.5-In., 5-Lbs. Pressure-Treated Lumber Nails, Ring-Shank, 16D, 3.5-In., 5-Lbs. Request a Quote UPC: 98342024990 SKU: 440112 Model Number: T4491A530 Maze ptl, 5 lb 16d, ring shank pressure treated wood nail, double hot dipped zinc coated, 3-1/2" length, 9 gauge, 5/16" head, 54 nails per lb. Double hot-dip galvanized nails are recommended by wood treaters