Jam Nut, Hex Type Thin/Low Hex, Finish Plain, Material Stainless Steel, Material Grade/Class 18-8, Thread Size 1/2 In.-20, Hex Width 3/4 in, Hex Height 5/16 in, Manufacturer Location Globally Sourced, Dimensional Standards ASME B18.2.2, System of Measurement Inch, Thread Direction Right Hand, Pack Size Small Pack, Rockwell Hardness B95 to C35, Thread Type Fine, Package Quantity 50