Flange Nut Material Grade/Class 18-8 Material Stainless Steel Finish Plain Thread Size 1/2 In.-13 Hex Width 7/8 in Hex Height 1/2 in Flange Diameter 1 1/8 in System of Measurement Inch Flange Thickness 0.188 in Hex Type Flange Nut Overall Height 11/16 in Pack Size Small Pack Rockwell Hardness 27 Rockwell Thread Direction Right Hand