A fitting used with a union nut and a tailpiece to form a union.
NSN 5910-00-515-3586
NSN 5915-00-431-4941
NSN 5935-00-651-5623
NSN 5975-01-413-8351
NSN 5999-01-169-0082
NSN 5965-00-934-3495
NSN 5990-00-524-2293
NSN 6130-00-052-2143
NSN 5950-01-325-7502
NSN 6620-01-477-3720
NSN 6320-01-524-9488
NSN 2925-01-297-2315