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The most powerful currently in the US stockpile is the 1.2 megaton B83 freefall gravity bomb.

The most powerful ever designed in the US was a 35 megaton warhead for the Titan ICBM, but never built. The Titan ICBM carried a 9 megaton W-53 warhead, the most powerful on a US missile. The most powerful ever built in the US was the 25 megaton B41 3-stage freefall gravity bomb.

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10y ago
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6mo ago

The most powerful nuclear weapon in the US arsenal is the B83, a thermonuclear bomb with a maximum yield of 1.2 megatons. It is designed to be carried by strategic bombers like the B-52 and is one of the largest and most destructive nuclear weapons currently in service.

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Q: What is the most powerful nuclear weapon in the us?
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