5/8"-11 Plain Finish Grade 8 Finished Hex Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.538 INCHES MINIMUM AND 0.562 INCHES MAXIMUM END ITEM IDENTIFICATION: 3990-01-588-3373; LOGISTICS SUPPORT VESSEL WIDTH ACROSS FLATS: 0.925 INCHES MINIMUM AND 0.941 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 11 NOMINAL THREAD SIZE: 0.625 INCHES BEARING SURFACE TYPE: FLAT OR CHAMFERED PART NAME ASSIGNED BY CONTROLLING AGENCY: 5/8-11 PLAIN FINISH GRADE 8 FINISHED HEX NUT SPECIAL FEATURES: NUT IS COVERED IN A LIGHT PROTECTIVE OIL MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: SAE J995,GRADE 8 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL