Coupling Nut, Material Grade/Class 18-8, Material Stainless Steel, Finish Plain, Thread Size M4 x 7.00, Thread Style Fully Threaded, Hex Width 7/16 in, Overall Length 7/16 in, Dimensional Standards ASME B18.2.2, Material Quality Standards ASTM A582, System of Measurement Metric, Thread Direction Right Hand, Pack Size Small Pack