Jam Nut, Hex Type Jam Hex, Finish Zinc-Plated, Material Grade/Class Grade 5, Material Steel, Thread Size 5/8 In. -18, Hex Width 15/16 in, Hex Height 25/64 in, Dimensional Standards ASME B 18.2. 2, System of Measurement Inch, Thread Direction Right Hand, Pack Size Small Pack, Thread Type Fine, Package Quantity 5. This item has been restricted from sale in the following state (s): []