Hex Nut Hex Type Standard Hex Finish Black Oxide Material Grade/Class Grade 5 Material Steel Thread Size 1 3/8 In.-6 Hex Width 2 1/32 in Hex Height 1 11/64 in Dimensional Standards ASME B18.2.2 System of Measurement Inch Thread Direction Right Hand Pack Size Small Pack Removable Yes Rockwell Hardness HRC 32 Thread Type Coarse Package Quantity 5