A fitting used with a union nut and a tailpiece to form a union.
NSN 5910-01-243-6166
NSN 6130-01-590-1288
NSN 6650-01-022-9523
NSN 5996-01-073-2332
NSN 5945-00-419-2600
NSN 5960-00-005-7132
NSN 5996-01-356-0875
NSN 4140-01-146-3524
NSN 5910-01-181-0015
NSN 6220-01-507-1537
NSN 5975-00-426-0657
NSN 5990-01-468-1292