Coupling Nut Material Grade/Class Grade 8 Material Steel Finish Zinc Plated Thread Size 1 In.-8 Thread Style Fully Threaded Hex Width 1 1/2 in Overall Length 2 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 Rockwell Hardness C26-C36