A fitting used with a union nut and thread piece to form a union.
NSN 2925-01-106-3552
NSN 6645-01-310-7348
NSN 5975-01-659-3587
NSN 5975-01-136-1198
NSN 5930-00-024-2405
NSN 5855-01-369-4192
NSN 6610-00-522-7670
NSN 5975-01-077-5525
NSN 5835-00-874-1085
NSN 6135-00-866-2311
NSN 5895-01-310-3526
NSN 7035-01-429-0431