1/2"-20 Grade 8 Yellow Zinc Finish NE Steel Nylon Insert Lock Nut / THREAD DIRECTION: RIGHT-HAND LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT NUT STYLE: A12 HEXAGON END ITEM IDENTIFICATION: 611-01-547-6738 WIDTH ACROSS FLATS: 0.750 INCHES NOMINAL THREAD QUANTITY PER INCH: 20 NOMINAL THREAD SIZE: 0.500 INCHES BEARING SURFACE TYPE: FLAT PART NAME ASSIGNED BY CONTROLLING AGENCY: NYLON INSERT LOCK NUT SPECIAL FEATURES: WEIGHT IS 1.075 LBS MATERIAL: PLASTIC NYLON LOCKING INSERT MATERIAL: PLASTIC NYLON NUT SURFACE TREATMENT: ZINC NUT