Coupling Nut, Material Grade/Class 18-8, Material Stainless Steel, Finish Plain, Thread Size 5/16 In. -18, Thread Style Fully Threaded, Hex Width 1/2 in, Overall Length 1 3/4 in, Dimensional Standards ASME B 18.2. 2, System of Measurement Inch, Thread Direction Right Hand, Pack Size Small Pack, Package Quantity 5