Hex Nut Hex Type Standard Hex Finish Black Oxide Material Grade/Class Grade 8 Material Steel Thread Size 1 3/4 In.-12 Hex Width 2 5/8 in Hex Height 1 1/2 in Dimensional Standards ASME B18.2.2 System of Measurement Inch Thread Direction Right Hand Pack Size Small Pack Removable Yes Rockwell Hardness C26 to C34 Thread Type Fine