Coupling Nut, Material Grade/Class Grade 2, Material Steel, Finish Zinc Plated, Thread Size 1/4 In.-20, Thread Style Fully Threaded, Hex Width 3/8 in, Overall Length 3/4 in, Dimensional Standards ASME B18.2.2, RoHS Compliant, Material Quality Standards SAE J995, System of Measurement Inch, Thread Direction Right Hand, Pack Size Small Pack, Sight Hole Yes, Package Quantity 5