A fitting used with a union nut and a tailpiece to form a union.
NSN 5895-01-136-3808
NSN 5998-00-358-2471
NSN 5930-01-159-7839
NSN 5975-01-542-3871
NSN 6685-01-035-5337
NSN 5915-01-275-5874
NSN 5960-01-311-5817
NSN 5999-00-421-4139
NSN 6135-00-351-8606
NSN 5855-00-560-0110
NSN 5935-01-370-0359
NSN 5950-01-014-4905