A fitting used with a union nut and thread piece to form a union.
NSN 5950-01-157-8425
NSN 6105-01-188-1524
NSN 4140-01-654-1341
NSN 5996-01-163-1768
NSN 6220-00-839-1485
NSN 6220-00-100-4392
NSN 5945-01-102-5722
NSN 6610-00-451-3325
NSN 5945-01-272-9579
NSN 5895-00-503-2551
NSN 6135-01-220-7193
NSN 6645-01-644-8376