The W76 is a United States thermonuclear warhead. It was manufactured from 1978-1987, and is still in service as of 2015.
The W-76 is carried inside a Mk-4 re-entry vehicle. U.S. Trident I and Trident II SLBM/Submarine Launched Ballistic Missiles may carry W76 warheads as one warhead option, along with W88 warheads in the Trident II.
The dimensions of the W76 and Mk-4 reentry vehicle which carries it are not known; only the warhead's weight of 362 pounds (164 kg) has been disclosed.
- Kristensen, Hans. "British Submarines to Receive Upgraded US Nuclear Warhead." FAS, 1 April 2011.
- Pincus, Walter, "Strategic Plan Extends Life Span Of Nuclear Arsenal", Washington Post, 19 May 2011, p. 17.