Swivel Flange Nut, Material Grade/Class 12L14, Material Steel, Finish Black Oxide, Thread Size 5/8 In. -11, Hex Width 1 1/16 in, Hex Height 21/32 in, Flange Diameter 1 3/8 in, System of Measurement Inch, Color Black, Dimensional Standards RoHS Compliant, Flange Thickness 0.25 in, Overall Height 29/32 in, Pack Size Small Pack, Rockwell Hardness Nut - 25 Rokwell, Collar - 85-90 Rockwell on 15N Scale, Tensile Strength 78, 300 psi, Thread Direction Right Hand, Thread Fit 2B. This item has been restricted from sale in the following state (s): []