5/8"-11 Grade 8 Zinc Finish NE Steel Nylon Insert Lock Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.765 INCHES NOMINAL END ITEM IDENTIFICATION: MRAP-COUGAR WIDTH ACROSS FLATS: 0.938 INCHES NOMINAL THREAD SERIES: UNEF THREAD QUANTITY PER INCH: 11 NOMINAL THREAD SIZE: 0.625 INCHES BEARING SURFACE TYPE: FLAT PART NAME ASSIGNED BY CONTROLLING AGENCY: 5/8 IN ZINC FINISH NE GRADE 8 MYLON INSERT LOCK NUT MATERIAL: PLASTIC NYLON LOCKING INSERT MATERIAL: STEEL OVERALL EXCEPT INSERT SURFACE TREATMENT: ZINC OVERALL EXCEPT INSERT