Cap Nut Material Grade/Class Not Graded Material Brass Finish Nickel Plated Thread Size 5/8 In.-11 Overall Height 0.75 in Hex Width 15/16 in Tensile Strength 55 000 psi Material Quality Standards ASTM B16 System of Measurement Inch Color Bright Nickel Pack Size Small Pack Removable Yes Resistance Properties Corrosion Resistant Nonmagnetic Rockwell Hardness B78 Thread Direction Right Hand