A fitting used with a union nut and thread piece to form a union.
NSN 5920-01-329-6224
NSN 5990-01-257-2476
NSN 5925-01-093-9455
NSN 5975-01-627-0853
NSN 4140-01-276-0949
NSN 6135-01-595-4779
NSN 6620-00-877-3266
NSN 6135-00-209-6918
NSN 5910-01-362-1942
NSN 6135-01-433-2062
NSN 5985-01-177-1724
NSN 5998-00-869-4036