Used on 2350-01-513-4793 carrier,personnel,full tracked. 2b thread class right-hand 16 thread quantity per inch steel in accordance with sae J995, grade 8, cadmium plated
Used on 2350-01-513-4793; mrap - rg-33 and rg-33 auv. 2b thread class right-hand 32 thread quantity per inch nut, self locking, hex, non-metallic locking feature, unc/unf-2b zinc surface treated
Used on 2350-01-513-4793; m915a1 armor kit nsn 2540-01-527-1418; mrap rg-33. 2b thread class right-hand 13 thread quantity per inch zinc surface treated
Used on v-22 lrip 1. 3b thread class 56 thread quantity per inch nut, self-locking, hexagon non-metallic insert, low height, 250 deg f MS21083N4 has been replaced by NASM21083 dated july 19, 2000 cadmium surface treated