Hex Head Cap Screw Head Type Hex Diameter 3/8 In. Grade 8 Material Carbon Steel Finish Yellow Zinc Plated Thread Size 3/8-16 Thread Type Coarse Length under Head 6-1/2 In. Thread Length 1-1/4 In. Head Height 15/64 In. Thread Style Partially Threaded Thread Direction Right Hand Tensile Strength 150 000 psi Rockwell Hardness C33 to C39 Meets/Exceeds ASME B18.2.1 Package Quantity 10