3a 1st end bulkhead thread class 12 1st end bulkhead thread quantity per inch passivate inside surface treated flared w/ bulkhead thread unj 1st end bulkhead thread series
2a 1st end thread class 3 2nd end bolt hole quantity 12 1st end thread quantity per inch 0.070 in. dia hole at inside of 90 deg bend unf 1st end thread series
3a all ends thread class 12 1st end thread quantity per inch supports grumman A10a aircraft; weapon system essential anodize surface treated unj 1st end thread series
Used on sikorsky cargo transport helicopter avenger class mcm. 3a 3rd end bulkhead thread class cadmium surface treated unjf 3rd end bulkhead thread series
Used on grumman a10a aircraft. 3a 1st end bulkhead thread class 12 1st end bulkhead thread quantity per inch cadmium surface treated unj 1st end bulkhead thread series
Used on grumman aircraft model a-10. 3a 1st end bulkhead thread class 12 1st end bulkhead thread quantity per inch passivate surface treated unj 1st end bulkhead thread series