A fitting used with a union nut and a tailpiece to form a union.
NSN 5950-00-861-8375
NSN 5930-01-265-9316
NSN 5835-01-512-4834
NSN 5998-01-211-5389
NSN 6645-00-816-1707
NSN 6135-00-165-3756
NSN 5950-01-350-4462
NSN 5925-00-969-3090
NSN 5925-01-145-4305
NSN 6685-00-726-2538
NSN 6685-01-462-3116
NSN 5965-01-381-4879