Hex Head Cap Screw Head Type Heavy Diameter 1 In. Grade B7 Material Alloy Steel Finish Plain Thread Size 1-8 Thread Type Coarse Length under Head 3-1/2 In. Thread Length 2-1/4 In. Head Height 39/64 In. Head Width 1-5/8 In. Thread Style Partially Threaded Thread Direction Right Hand Tensile Strength 125 000 psi Rockwell Hardness C35 Meets/Exceeds ASME B18.2.1 ASTM A193 Package Quantity 5