7/8"-9 A-563 Grade C Plain Finish Heavy Hex Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.833 INCHES MINIMUM AND 0.885 INCHES MAXIMUM WIDTH ACROSS FLATS: 1.394 INCHES MINIMUM AND 1.438 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 9 NOMINAL THREAD SIZE: 0.875 INCHES BEARING SURFACE TYPE: FLAT THREAD TOLERANCE CLASS: 2B INTERNAL PART NAME ASSIGNED BY CONTROLLING AGENCY: PLAIN FINISH HEAVY HEXAGON NUT SPECIAL FEATURES: METRIC DIMENSIONS: 22.2 MM X 101.6 MM MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A563 ASSN STD SINGLE MATERIAL RESPONSE OVERALL