Used on pershing missile. 2b internal thread class right-hand internal 20 internal thread quantity per inch passivate or zinc surface treated cap unef internal thread series
3a thread class right-hand 0.500" err default 1.188" overall length head slot 0.188 in. deep followed by a 0.188 in. deep 30 deg seat int round slotted, external thread, boss
Used on aircraft application. 3a all ends thread class 2.540" overall length 6 bolt hole quantity anodize body surface treated male coupling half unjf all ends thread series
3a first fluid end connection thread class 4.190" overall length anodize surface treated coupling assembly unf first fluid end connection thread series
Used on boeing vertol cargo transport helicopter, model ch-47. 3b 1st end thread class grumman corp, a-10 aircraft anodize surface treated unf 1st end thread series
