A fitting used with a union nut and thread piece to form a union.
NSN 5855-01-122-9418
NSN 7035-01-151-0265
NSN 5999-01-147-5317
NSN 5950-00-590-4255
NSN 2925-01-013-0413
NSN 7035-00-007-0584
NSN 6650-00-172-7519
NSN 5925-00-941-8522
NSN 5915-00-919-7604
NSN 6145-01-326-8531
NSN 5920-01-528-7196
NSN 6105-01-492-8243