A fitting used with a union nut and thread piece to form a union.
NSN 6685-01-601-2691
NSN 5960-01-335-1622
NSN 4140-01-224-7662
NSN 6645-01-500-0827
NSN 6610-00-061-7882
NSN 5996-00-127-3325
NSN 2925-00-436-9837
NSN 6320-01-422-1212
NSN 5895-01-472-2476
NSN 5855-01-191-3404
NSN 5905-00-725-7244
NSN 5985-01-112-0735