A fitting used with a union nut and thread piece to form a union.
NSN 5945-01-170-6666
NSN 6135-01-220-7193
NSN 5855-01-391-7077
NSN 6110-01-268-4737
NSN 5975-01-352-0574
NSN 6650-01-011-9093
NSN 5996-01-323-5326
NSN 5925-01-295-3416
NSN 4140-01-551-0825
NSN 5915-00-063-3689
NSN 5835-01-059-5535
NSN 5999-01-500-4877