A fitting used with a union nut and thread piece to form a union.
NSN 5996-01-228-5334
NSN 5910-01-109-5784
NSN 5905-01-267-3737
NSN 5999-01-062-6401
NSN 7035-00-803-3056
NSN 7035-00-631-3782
NSN 5960-00-926-2637
NSN 5925-00-081-9135
NSN 6135-00-574-1204
NSN 6240-01-298-6618
NSN 5920-00-119-1406
NSN 5975-01-430-3421