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For the Fallout: New Vegas miscellaneous item, see Isotope-239 igniting agent.

Nuclear material is a crafting component in Fallout 4.


A catch-all term for the various radioactive substances found in the Commonwealth. The nuclear material is a rare and valuable item used to craft weapon modifications as well as various explosives.


Miscellaneous object (see below)
Icon range
Icon level
Nuclear material (varies)
Item Yield* Weight Yield/Weight*
Alarm clock 1 1 1
Biometric scanner 2 3 0.67
Blast Radius board game 1 1 1
Distress pulser 1 1 1
High-powered magnet 1 5 0.2
Ichor sac 1 0.5 2
Inactive distress pulser 1 1 1
Mini nuke beryllium cap 1 0
Mini nuke detonator shell 2 0
Mini nuke hemisphere core 1 0
Nuclear material 1 0.1 10
Shipment of 25 units 25 0
Prototype biometric scanner 2 3 0.67
Radioactive gland 2 0.5 4
Radscorpion stinger 2 0.5 4
Recorder 1 0.7 1.43
Wakemaster alarm clock 2 1 2
* Nothing is gained if one does not have at least level 1 of the Scrapper perk. At level 3, yields are at least doubled.


  • Can be looted from dead super mutant suiciders if they've detonated their mini nuke, otherwise they will drop the mini nuke.
  • Can be looted from any glowing creature.
  • Occasionally found in bags of meat.
  • Can often be looted from the bodies or goo piles when enemies are killed by plasma weaponry or any weapon with the plasma infused modifier.
  • Shipments can be bought from Alexis Combes in Vault 81, but only at certain times are they available.
  • Gained from scrapping the uranium deposits in Vault 88.
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