Hex Nut Hex Type Standard Hex Finish Plain Material Grade/Class Grade 5 Material Steel Thread Size 3/8 In.-16 Hex Width 9/16 in Hex Height 21/64 in Dimensional Standards ASME B18.2.2 System of Measurement Inch Thread Direction Right Hand Pack Size Small Pack Rockwell Hardness C19 to C30 Thread Type UNC Package Quantity 100