Crown Bolt 80860 3/8-Inch by 4-1/2-Inch Coarse Thread Hot Dipped Galvanized Steel Hex Bolts, 15-Pack Galvanized 3/8-Inch-16 by 4-1/2-Inch Hex Bolt For General Applications 3/8-Inch-16 Body Diameter And Thread Pitch 4-1/2-Inch Fastener Length Galvanized Finish