Hex Nut Full Low Carbon Steel Finish Ultra Coat Grade 8 Property Class 8 Thread Size 3/8-24 3/8-24 Thread Type UNF Thread Direction Right Hand Width 9/16 In. Height 21/64 In. Rockwell Hardness C24 to C32 Application General Purpose Meets/Exceeds ASME/ANSI B18.2.2 1987 (R1999) SAE J995 Package Quantity 100