Hex Head Cap Screw Head Type Hex Diameter 1/2 In. Material 18-8 Stainless Steel Thread Size 1/2-20 Thread Type Fine Length under Head 2 In. Thread Length 1-1/4 In. Head Height 5/16 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 Package Quantity 10