A fitting used with a union nut and thread piece to form a union.
NSN 5985-01-052-6473
NSN 6110-01-044-6350
NSN 6105-01-476-7470
NSN 5996-01-265-8621
NSN 7035-01-331-5614
NSN 6645-00-780-5260
NSN 6610-01-354-7963
NSN 6610-00-288-5655
NSN 6105-01-145-2681
NSN 5910-00-900-6059
NSN 5996-01-414-4317
NSN 4140-01-400-3610