A fitting used with a union nut and thread piece to form a union.
NSN 5985-01-588-8267
NSN 5990-01-132-3059
NSN 5915-01-563-4161
NSN 5996-01-234-1138
NSN 6105-00-497-2873
NSN 6150-01-165-9422
NSN 5975-01-406-6596
NSN 6610-01-599-4462
NSN 5855-00-149-0766
NSN 6685-01-443-9723
NSN 5925-00-772-8168
NSN 6240-00-905-6050