This is an overview article, focusing on background information and cross-game comparisons.
Mini nuke expanded
mini nuke is an ammunition type found in , Fallout 3 , Fallout: New Vegas and Fallout 4 . The Fallout 76 mini nuke grenade is found in .
Fallout: Brotherhood of Steel
Fort Strong as part of the M42 Fat Man project, the mini nuke project took over a year. Despite setbacks during development, the project was completed in September 2077.  The M42s were subsequently shipped to soldiers fighting overseas.     
Found in both the
Capital and Mojave Wastelands as well as surrounding areas.
A mini nuke consists of four principal components. The
detonator shell, four stabilizer fins, a hemisphere core, and beryllium cap. Striking the mini nuke or using other explosives around it will not result in its detonation, as it can only be utilized by firing from a Fat Man.
Mini nuke grenade
The mini-nuke grenade is a mini nuke packed into a hand-held explosive device.
Behind the scenes
The following is based on unverified behind the scenes information and may be inaccurate.
The mini nuke resembles the American
W54 miniature nuclear warhead.
End of information based on unverified behind the scenes information.