A fitting used with a union nut and thread piece to form a union.
NSN 5945-01-317-3193
NSN 5910-01-386-1152
NSN 5999-01-053-5499
NSN 6685-01-654-2341
NSN 5990-01-529-8433
NSN 6650-01-514-9139
NSN 6105-01-067-8377
NSN 6135-01-495-0933
NSN 5895-01-045-0328
NSN 5930-01-458-8484
NSN 5905-00-774-8331
NSN 5950-00-794-0432