Hex Head Cap Screw Head Type Hex Diameter 3/8 In. Grade 9 Material Alloy Steel Finish Yellow Zinc Plated Thread Size 3/8-16 Thread Type Coarse Length under Head 5-1/2 In. Thread Length 1 In. Head Height 9/32 In. Head Width 9/16 In. Thread Style Partially Threaded Thread Direction Right Hand Proof Load 150 000 psi Tensile Strength 180 000 psi Rockwell Hardness C38 to C42 Meets/Exceeds ASME B18.2.1 ASTM F1941 FeZn5C Package Quantity 5