Used on submarine armament and fire control systems. underwater torpedo tubes. submarine ship control sys. ssbn mk-118 fire control sys. ohio class ssn (trident) ship.. weapon system essential
3a thread class right-hand 1.250" thread length flat chamfer head style 0.061" hole diameter 24 thread quantity per inch cadmium surface treated unrf thread series
2a thread class right-hand 0.662" thread length flat countersunk head style 20 thread quantity per inch navy special project zinc surface treated unf thread series
3a thread class right-hand 0.313" thread length dished hexagon head style 5.615" grip length 32 thread quantity per inch cadmium surface treated unjf thread series