Data Quality85%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the nuclear warheads category.
01 / Overview
Mark 4 nuclear bomb
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
NUCLEAR WARHEADS · EARLY COLD WAR
8
PERFORMANCE/PRICE
50
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the nuclear warheads category, regardless of era.
02 / Specs & Design
◎General6MOD.6
- Warhead TypeFission bomb
- Service Entry Year1949
- Weight10,850 kg
- Length3.251 m
- Diameter1,524 mm
- In ServiceYes
◈Yield6MOD.6
- Yield13.581
- Yield Range1–31 kt
- ThermonuclearNo
- Boosted FissionNo
- Variable Yield (Dial-a-Yield)Yes
- Enhanced Radiation (Neutron)No
▣Delivery5MOD.5
- Delivery SystemsStrategic bombers (air-dropped)
- MIRV-CompatibleNo
- Missile WarheadNo
- Gravity BombYes
- Artillery ShellNo
◇Safety & Security3MOD.3
◆Production4MOD.4
- Number Built550
- Designer / LabLos Alamos Scientific Laboratory (Z Division)
- First Test1945
- Operators1
03 / History
SERVICE LIFESPANRetired
- 1945First deployment: Cold War
- 1949Production started
- 1953Production ended
77
years in service
4
years in production
550
units produced
0
countries operating
ⓘ 1 countries retired it.
05 / MASS Score
NUCLEAR WARHEADS RANKING Nuclear Warheads · Early Cold War
MASS RANKINGSMASS ↗
39NUCLEAR WARHEADS8EARLY COLD WAR · NUCLEAR WARHEADS1367UNITED STATES · ALL WEAPONS45PERFORMANCE/PRICE · NUCLEAR WARHEADS
ⓘ Rankings are within theNuclear Warheadscategory.
📖 TERMS ON THIS PAGE2terms
A gravity bomb is a type of bomb that relies on gravity to guide it to its target, using no thrust or lift during its descent.
A nuclear warhead feature allowing adjustable explosive yield, typically via selectable charge configurations, to optimize effects for different targets.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources