Hex Nut Hex Type Heavy Hex Finish Black Oxide Material Grade/Class Grade 2H Material Steel Thread Size 5/8 In.-11 Hex Width 1 1/16 in Hex Height 39/64 in Manufacturer Location Globally Sourced Dimensional Standards ASME B18.2.2 System of Measurement Inch Thread Direction Right Hand Pack Size Small Pack Removable Yes Rockwell Hardness HRC 24/35 Thread Type Coarse Package Quantity 420