A fitting used with a union nut and thread piece to form a union.
NSN 5905-01-331-9675
NSN 5998-00-446-3318
NSN 5950-00-321-8419
NSN 6620-00-345-3456
NSN 6650-00-840-9758
NSN 5960-01-632-6576
NSN 6150-01-116-6895
NSN 6620-01-433-7952
NSN 6650-01-256-9151
NSN 2925-01-353-3928
NSN 6610-01-065-1073
NSN 5950-00-180-9943