A fitting used with a union nut and a tailpiece to form a union.
NSN 5920-01-534-7042
NSN 5985-01-167-7708
NSN 6320-01-313-8306
NSN 5965-01-128-3944
NSN 5960-01-098-8437
NSN 5895-01-506-3755
NSN 6685-01-017-2797
NSN 6135-01-313-1948
NSN 6620-01-525-8648
NSN 4140-01-624-9057
NSN 5990-01-264-9759
NSN 5835-01-546-2008