Jam Nut, Hex Type Jam Hex, Finish Plain, Material Grade/Class 18-8, Material Stainless Steel, Thread Size 5/16 In. -18, Hex Width 1/2 in, Hex Height 3/16 in, Dimensional Standards ASME B 18.2. 2, System of Measurement Inch, Thread Direction Right Hand, Pack Size Small Pack, Thread Type Coarse, Package Quantity 100. This item has been restricted from sale in the following state (s): []