A fitting used with a union nut and a tailpiece to form a union.
NSN 6320-00-682-3448
NSN 6620-00-860-1626
NSN 5999-01-483-4198
NSN 6645-01-344-8702
NSN 6620-01-435-7083
NSN 5835-00-660-4523
NSN 5965-01-556-9520
NSN 5945-00-021-9408
NSN 6105-01-462-3627
NSN 6110-00-796-4534
NSN 7035-01-473-3223
NSN 6650-01-371-0500