Brighton-Best 3/4" x 4" Hex Head Lag Screws Hot Dip Galvanized - 20 per Box (487767)3/4" Diameter4" Length (Length is measured from under the head)Grade 1 Low Carbon Steel Hex Head Lag Screw (Meets SAE J429 & ASME B18.2.1)Hot Dip Galvanized (HDG) to...