A fitting used with a union nut and thread piece to form a union.
NSN 2925-00-902-3881
NSN 6320-00-149-7570
NSN 5930-01-182-2290
NSN 6645-00-042-9587
NSN 6645-01-599-2311
NSN 2925-01-603-2033
NSN 5985-01-312-7504
NSN 6650-01-096-6803
NSN 5960-00-869-7404
NSN 5996-00-699-4468
NSN 5855-00-951-6483
NSN 5905-01-232-0420