A fitting used with a union nut and a tailpiece to form a union.
NSN 5950-01-359-1997
NSN 5905-01-651-0826
NSN 6105-00-655-3083
NSN 6685-00-684-7891
NSN 6220-01-213-6154
NSN 6320-01-445-0325
NSN 6105-01-004-7890
NSN 6145-00-539-9799
NSN 5960-01-196-9203
NSN 6320-01-504-3948
NSN 4140-00-288-9826
NSN 6110-01-213-4973