Crown Bolt 87230 00420 3/8-Inch 16 by 3-1/2-Inch Coarse Thread Zinc Plated Steel Hex Bolts, 25-Pack Zinc Plated 3/8-Inch X 3-1/2-Inch Hex Bolt Coarse USS For General Applications 3/8-Inch-16 Body Diameter And Thread Pitch 3-1/2-Inch Fastener Length Zinc Plated Finish