A fitting used with a union nut and a tailpiece to form a union.
NSN 6610-01-633-8931
NSN 5985-01-484-3334
NSN 5930-01-335-0379
NSN 5965-01-563-0489
NSN 5996-00-062-8338
NSN 5895-01-303-5770
NSN 5990-01-147-5225
NSN 5999-01-090-7685
NSN 5998-01-415-2525
NSN 5910-01-600-0199
NSN 5935-01-359-8960
NSN 4140-01-364-0109