A fitting used with a union nut and thread piece to form a union.
NSN 5925-01-102-8482
NSN 6150-01-062-0728
NSN 6150-01-519-2182
NSN 6110-00-081-0927
NSN 5985-00-089-0531
NSN 6610-00-176-5486
NSN 5925-00-728-2290
NSN 6685-01-024-9508
NSN 5910-00-216-4726
NSN 6610-01-300-1789
NSN 5895-01-119-3942
NSN 6620-01-095-8937