Flange Nut Material Grade/Class 18-8 Material Stainless Steel Finish Plain Thread Size 5/8 In.-11 Hex Width 1 1/16 in Hex Height 5/8 in Flange Diameter 1 3/8 in System of Measurement Inch Flange Thickness 0.188 in Hex Type Flange Nut Overall Height 13/16 in Pack Size Small Pack Rockwell Hardness 27 Rockwell Thread Direction Right Hand