A fitting used with a union nut and thread piece to form a union.
NSN 5975-01-472-2194
NSN 6135-01-131-9352
NSN 5975-01-441-4199
NSN 6610-00-456-0485
NSN 5835-00-055-0953
NSN 6685-00-363-1701
NSN 6620-01-374-0592
NSN 5915-01-307-0867
NSN 6620-01-367-0844
NSN 5945-01-388-1997
NSN 6685-01-095-0278
NSN 5985-01-029-7319