Brighton-Best 5/16" x 6" Hex Head Lag Screws Hot Dip Galvanized - 50 per Box (487276)5/16" Diameter6" 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...