Hex Nut, Hex Type Standard Hex, Finish Plain, Material Grade/Class 316 H5, Material Stainless Steel, Thread Size 5/16 In.-18, Hex Width 1/2 in, Hex Height 17/64 in, Dimensional Standards ASME B18.6.3, System of Measurement Inch, Thread Direction Right Hand, Pack Size Small Pack, Removable Yes, Thread Type Coarse