A fitting used with a union nut and a tailpiece to form a union.
NSN 6610-00-803-0722
NSN 2925-01-545-2717
NSN 6135-01-534-3007
NSN 5915-00-446-4143
NSN 6220-00-496-8592
NSN 5965-01-121-0580
NSN 6685-01-190-0871
NSN 7035-00-111-4389
NSN 5960-01-503-0362
NSN 6610-00-557-8271
NSN 6105-01-074-9074
NSN 5930-00-728-6603