Brighton-Best 3/8" x 2-1/2" Hex Head Lag Screws Zinc Plated - 50 per Box (486336)3/8" Diameter2-1/2" Length (Length is measured from under the head)Grade 1 Low Carbon Steel Hex Head Lag Screw (Meets SAE J429 & ASME B18.2.1)Zinc Plated to meet ASTM F1941...