5/8"-11 Grade 2 Zinc Finish NTE Steel Jam Nylon Insert Lock Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.535 INCHES MINIMUM AND 0.559 INCHES MAXIMUM END ITEM IDENTIFICATION: (C93) FIVE TON TANKER TRAILER,MODEL M967A2,2330-01-495-0040 (C94) FIVE TON TANKER TRAILER,MODEL M969A3,2330-01-495-0043 WIDTH ACROSS FLATS: 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 11 NOMINAL THREAD SIZE: 0.625 INCHES BEARING SURFACE TYPE: ANY ACCEPTABLE PART NAME ASSIGNED BY CONTROLLING AGENCY: LOCKNUT,NYLON INSERT,CAD(ZINC)PLT AND EMPERGRD MATERIAL: STEEL NUT SURFACE TREATMENT: CADMIUM OVERALL AND ZINC