Coupling Nut Material Grade/Class Grade 2 Material Steel Finish Zinc Plated Thread Size M16 x 2.00 Thread Style Fully Threaded Hex Width 13/16 in Overall Length 2 1/8 in Dimensional Standards ASME B18.2.2 RoHS Compliant Material Quality Standards SAE J995 System of Measurement Metric Thread Direction Right Hand Pack Size Small Pack