Hex Head Cap Screw Head Type Flange Diameter 1/2 In. Grade 8 Material Alloy Steel Finish Plain Thread Size 1/2-13 Thread Type Coarse Length under Head 3 In. Thread Length 1-1/4 In. Head Height 33/64 In. Head Width 3/4 In. Flange Dia 1-1/16 In. Thread Style Partially Threaded Thread Direction Right Hand Proof Load 120 000 psi Tensile Strength 150 000 psi Rockwell Hardness C33 to C39 Meets/Exceeds SAE J429 IFI-111 Package Quantity 25