Spherical Flange Nut Material Grade/Class 18-8 Material Stainless Steel Finish Black Oxide Thread Size 3/4 In.-10 Hex Width 1 1/4 in Hex Height 3/4 in Flange Diameter 1 5/8 in System of Measurement Inch Compatible Washer Manufacturer Part Number 47745 Maximum Rotation 2 Degrees Nut Finish Plain Pack Size Small Pack Rockwell Hardness 27 Rockwell