A fitting used with a union nut and a tailpiece to form a union.
NSN 4140-01-511-0744
NSN 5855-01-433-2220
NSN 6685-00-253-9997
NSN 6645-01-344-4184
NSN 5930-01-286-5853
NSN 5990-01-322-9781
NSN 6685-01-634-0611
NSN 5960-00-266-6741
NSN 6130-00-177-3142
NSN 7035-01-128-7431
NSN 5905-00-485-4554
NSN 5910-01-089-9201