Coupling Nut Reducer Material Steel Material Grade/Class Grade 2 Finish Zinc Plated Thread Size A 1/2 In.-13 Thread Size B 1/4 In.-20 Thread Style Fully Threaded Hex Width 5/8 in Overall Length 1 1/4 in System of Measurement Inch Thread Direction Right Hand Minimum Tensile Strength 10 500 psi Pack Size Small Pack Proof Load 90 000 psi Rockwell Hardness C32 Package Quantity 10