Used on 5419-01-539-7180. 2b thread class right-hand 18 thread quantity per inch hex nut with lock washer per mcmaster carr part number has multiple sources zinc surface treated
3b thread class right-hand 20 thread quantity per inch nut, self-locking, extended washer, double hexagon, cres, 180 ksi, 450 degrees lubricant is solid film lube iaw mil-l-46010, ty i; lubricant shall be space compatible, kal-gard "fa" only passivate surface treated
