Mk 41 Thermonuclear Bomb:

Length: 12 feet, 4 inches
Diameter: 4 feet, 4 inches
Weight: 10,600lbs
Weight of Fissionable Plutonium:
Explosive Yield: 25 Megatons - the most powerful nuclear weapon the USA deployed
Configuration: Three stage - Plutonium implosion deuterium boosted primary, lithium deuterided secondary and tertiary stages
Delivery Method: Boeing B-52 Stratofortress, airburst or ground contact fuse retarded by 2 parachutes
Est. # of Mk 41 Nuclear Weapons Produced: 500
Production Date: 1960-1962, retired in 1976