A fitting used with a union nut and thread piece to form a union.
NSN 5910-01-553-2786
NSN 5910-00-263-3630
NSN 5998-00-942-6127
NSN 5965-00-548-7119
NSN 6320-00-115-0883
NSN 5960-01-439-2980
NSN 5998-00-175-9007
NSN 5999-01-137-0635
NSN 5835-01-085-5487
NSN 5905-01-621-4577
NSN 6620-00-351-9949
NSN 5895-01-468-0054