5/8"-11 Grade F Zinc Finish Steel Flange Top Lock Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND WASHER OUTSIDE DIAMETER: 1.330 INCHES NOMINAL OVERALL HEIGHT: 0.690 INCHES NOMINAL NUT STYLE: A294 HEXAGON WASHER THICKNESS: 0.100 INCHES NOMINAL END ITEM IDENTIFICATION: 3825-01-577-2713 DISTRIBUTOR, WATER, TANK TYPE WIDTH ACROSS FLATS: 0.922 INCHES MINIMUM AND 0.940 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 11 NOMINAL THREAD SIZE: 0.625 INCHES PART NAME ASSIGNED BY CONTROLLING AGENCY: NUT, HEX FLANGE TOP LOCK MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941, FE/ZN 3 AT ASSN STD SINGLE TREATMENT RESPONSE OVERALL