A fitting used with a union nut and thread piece to form a union.
NSN 5998-01-262-2193
NSN 5950-01-128-6575
NSN 6610-01-257-5808
NSN 6610-00-881-1189
NSN 5999-01-029-3025
NSN 5998-01-389-7028
NSN 6685-01-018-5353
NSN 5855-01-085-5354
NSN 5998-00-473-2035
NSN 5855-01-033-1375
NSN 6105-00-492-6159
NSN 5935-01-415-0887