5/8"-11 18-8 Stainless Steel Finished Hex Nut / THREAD QUANTITY PER INCH: 11 NOMINAL THREAD SIZE: 0.625 INCHES BEARING SURFACE TYPE: FLAT PART NAME ASSIGNED BY CONTROLLING AGENCY: 18-8 STAINLESS STEEL FINISHED HEX NUT SPECIAL FEATURES: 5/8"-11; 18-8 STAINLESS STEEL; PLAIN FINISH; ROHS; ASTM F594; THICKNESS 0.547"; COARSE THREAD; 15/16" WRENCH SIZE; PRODUCT WEIGHT 0.741 POUNDS MATERIAL: STEEL CORROSION RESISTING OVERALL