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The heavy spiked is a weapon mod for the sledgehammer in Fallout 76.


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Attaching the mod to a sledgehammer results in the following changes to the weapon:

  • + ? armor penetration
  • 25% damage bonus multiplier
  • 25% extra limb damage
  • 20% increased chance to cripple
  • 30% increased Caps value
  • 50% increased weapon weight


Weapon modifications will modify an existing weapon, and any modifications previously equipped on the weapon will be destroyed, not unequipped. Loose mods cannot be crafted. For modifications unlocked through scrapping, the corresponding weapon must be scrapped in order to learn how to craft it.

Lead (2)
Steel (7)
Wood (2)
Build at:
Learn Method:
Learned when scrapping object
Chance: 20%
Heavy spiked (1)


Crafted at a weapons workbench.

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