The B46 nuclear bomb (or Mk-46) was a tested but never deployed American high-yield thermonuclear bomb which was designed and tested in the late 1950s. Though originally intended to be a production design, the B46 ended up being only an intermediate proto

Internal components of the Medium Atomic Demolition Munition setup. W45 warhead is to the right of the casing.

The W44 was an American nuclear warhead used on the ASROC tactical anti-submarine missile system.

In December 1957 the Army requested the Atomic Energy Commission to develop a nuclear warhead for the HAWK low-to-medium altitude surface to air missile. In July 1958 the military characteristics were approved for the new warhead and the design released.