A fitting used with a union nut and a tailpiece to form a union.
NSN 5960-00-104-5955
NSN 5965-01-501-7987
NSN 5998-01-029-8398
NSN 5920-01-377-0116
NSN 5905-01-634-0595
NSN 5998-01-605-0116
NSN 5985-00-081-9836
NSN 6110-00-544-2527
NSN 5910-01-336-8440
NSN 4140-00-640-6811
NSN 5999-01-115-0100
NSN 5905-00-974-5435