A fitting used with a union nut and thread piece to form a union.
NSN 5910-01-408-6305
NSN 6150-01-032-4161
NSN 5985-01-366-0785
NSN 5855-01-144-4837
NSN 6620-01-003-2905
NSN 6645-01-046-4880
NSN 5905-01-598-2185
NSN 5999-01-444-3486
NSN 5910-01-412-5969
NSN 5998-01-543-4652
NSN 5935-01-598-8990
NSN 5935-01-450-2178