Brighton-Best 5/16" x 5" Hex Head Lag Screws Hot Dip Galvanized - 50 per Box (487270)5/16" Diameter5" 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...