A fitting used with a union nut and thread piece to form a union.
NSN 6240-01-217-8287
NSN 6320-01-544-6447
NSN 5915-00-669-6824
NSN 6220-01-449-2807
NSN 5965-01-378-7096
NSN 5998-01-605-1982
NSN 6220-00-366-1670
NSN 5895-01-053-0896
NSN 5855-01-041-9392
NSN 5965-01-456-3936
NSN 5975-00-761-0206
NSN 5855-00-688-9954