A fitting used with a union nut and thread piece to form a union.
NSN 5999-01-065-8124
NSN 6320-00-433-2773
NSN 5996-01-499-9749
NSN 6145-01-012-2098
NSN 6135-00-708-0892
NSN 4140-00-489-3020
NSN 5960-01-103-5476
NSN 5895-01-123-6815
NSN 6620-01-083-4672
NSN 5950-01-650-8135
NSN 5835-00-825-2512
NSN 5996-01-181-7057