A fitting used with a union nut and a tailpiece to form a union.
NSN 6150-01-276-2069
NSN 6685-00-611-9915
NSN 5990-01-249-2060
NSN 5905-01-065-2449
NSN 5999-01-472-6248
NSN 5950-01-359-1997
NSN 5905-00-644-0381
NSN 5998-01-303-7984
NSN 5895-00-006-6366
NSN 5998-01-184-0264
NSN 6620-00-510-5162
NSN 5905-01-342-3918