Used on rotor assembly,propulsor. right-hand 4 thread quantity per inch nut, self locking hexagon heavy hexagon nylon insert self locking made from monel
Used on mrap - unique nsn - maxxpro cat i. 6h thread class right-hand nut-lock these are the dimentions in mm : width accross flats, 45.7; from point to point on the hexagon, 52.2; height, 18.3; outside diameter of shaft, 39.8; inside of shaft, 33.0; this has a countersink of 90 degrees
