The contract term is for five years and includes an option for an additional 263 aircraft, which if exercised would push the overall award value to $11.7 billion.
Sikorsky said year-by-year production quantities will be based on funds allocated by Congress and the Department of Defense.
"By buying a five-year quantity of four helicopter models in a single joint-service purchase, the two services have enabled Sikorsky and our suppliers to aggressively control our long- term costs," said John Palumbo, Sikorsky's vice president for Black Hawk aircraft production. "Furthermore, by ordering a similar number of aircraft year-over-year, the Army and Navy have ensured that we can stabilize our supply base over the same period of time."
The baseline aircraft to be produced include the UH-60M utility and HH-60M MEDEVAC helicopters for the Army and MH-60R and MH-60S helicopters for the Navy.
Deliveries begin this month.