- Family: Delta
- Length: 35 m
- Diameter: 2.44 m
- Launch Mass: 118 T
- Low Earth Orbit Capacity: 600 kg
The Delta 1604 was manufactured by McDonnell Douglas with the first launch on 1972-09-23. Delta 1604 has 2 successful launches and 0 failed launches with a total of 2 launches. The Delta 1000 series (also referred to as Straight-Eight) was an American expendable launch system which was used to conduct eight orbital launches between 1972 and 1975. It was a member of the Delta family of rockets. Several variants existed, differentiated by a four digit numerical code.
