3/4-10 CASTELLATED (CASTLE) NUT, 18-8 STAINLESS STEEL / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND LOCKING FEATURE: FREE-RUNNING ALL METAL DESIGN NUT STYLE: A1 CASTELLATED, HEXAGON NUT HEIGHT: 0.611 INCHES MINIMUM AND 0.640 INCHES MAXIMUM END ITEM IDENTIFICATION: 01-615-9020 WIDTH ACROSS FLATS: 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 10 HARDNESS RATING: 80.0 ROCKWELL B MINIMUM NOMINAL THREAD SIZE: 0.75 INCHES BEARING SURFACE TYPE: CHAMFERED PART NAME ASSIGNED BY CONTROLLING AGENCY: CASTLEN.SS MATERIAL: STEEL CORROSION RESISTING NUT