Used on nsn 2320-01-097-0260 hemtt (heavy expanded mobility tactical truck); 2320-01-304-2277 and 2320-01-304-2278 pls (palletized loading system). 2b thread class right-hand 14 thread quantity per inch weapon system essential
2b thread class right-hand 20 thread quantity per inch as differentiated by material which must conform to ships parts control center special quality control provisions