Coupling Nut Reducer Material Steel Material Grade/Class Grade 2 Finish Zinc Plated Thread Size A 5/8 In.-11 Thread Size B 3/8 In.-16 Thread Style Fully Threaded Hex Width 13/16 in Overall Length 1 1/4 in System of Measurement Inch Thread Direction Right Hand Minimum Tensile Strength 5 750 psi Pack Size Small Pack Proof Load 90 000 psi Rockwell Hardness C32 Package Quantity 10