3a 2nd end thread class 20 3rd end thread quantity per inch first end bulkhead, unf, 0.438 in. thd size, 3a thd class passivate inside surface treated unf 1st end thread series
3a all ends thread class 2.551" overall length bulkhead threads on fluid end connection cadmium body or zinc body surface treated male coupling half unf all ends thread series
3a 2nd end thread class first end per MS33515 style s, second end per MS33515 style s, third end per MS33649 passivate inside surface treated unf all ends thread series
3a all ends thread class 3.560" overall length 12 all ends thread quantity per inch anodize body surface treated male coupling half un all ends thread series
Used on combat system support equipment; palletized loading system; communications terminal, satellite; water purification unit, reverse osmosis; 485l tacs; family of medium tactical vehicles-medium; aircraft, galaxy c-5; support equipment f-16 aircraft; air conditioner (a/e 32c-39). weapon system essential zinc surface treated nptf 1st end thread series
