A fitting used with a union nut and a tailpiece to form a union.
NSN 6110-00-617-5497
NSN 6645-00-404-1785
NSN 5835-00-240-9838
NSN 5925-00-054-0616
NSN 5999-00-905-7673
NSN 5960-00-140-9583
NSN 6145-01-620-0986
NSN 5935-01-562-2543
NSN 5965-01-050-1020
NSN 5945-01-279-9140
NSN 6135-01-292-1071
NSN 5855-00-177-3529