Hex Head Cap Screw Head Type Hex Diameter 7/8 In. Material 316 Stainless Steel Thread Size 7/8-9 Thread Type Coarse Length under Head 9 In. Thread Length 2-1/4 In. Head Height 35/64 In. Thread Style Partially Threaded Thread Direction Right Hand Tensile Strength 85 000 to 150 000 psi Rockwell Hardness B80 to C32 Meets/Exceeds ASME B18.2.1