Spherical Flange Nut, Material Grade/Class 18-8, Material Stainless Steel, Finish Black Oxide, Thread Size 1/4 In. -20, Hex Width 1/2 in, Hex Height 7/32 in, Flange Diameter 1 5/8 in, System of Measurement Inch, Dimensional Standards RoHS Compliant, Flange Thickness 0.094 in, Material Quality Standards 303 SS, Pack Size Small Pack, Rockwell Hardness 27 Rockwell, Tensile Strength 100, 000 psi, Thread Direction Right Hand, Thread Fit 2B. This item has been restricted from sale in the following state (s): []