Used on radar set, semitrailer mounted nsn 1430-01-418-4396. 28 thread class nut/screw cap, stainless steel nut/screw cap with threaded seat for 1/4-28unf screw, 300 series stainless steel, passivated per astm a 967, lot testing required, practice optional or per sae-ams-2700 class 2, passivation method optional, test method optional
2b thread class right-hand 32 thread quantity per inch nut, sleeve material:steel, carbon.1010 thru 1026, or 1117 thru 1119 or 1211 thru 1215, spec astm a 108 or a 576; dimensions are after zinc coating zinc surface treated