Iron Fist

Iron Fist is a Fallout 3 Perk.
 * Requirements: Level 4, Strength 4
 * Ranks: 3
 * Benefit: With the Iron Fist perk, you do an additional 5 points of Unarmed damage per rank.


 * This perk takes effect even if you're using Unarmed weapons (like the Deathclaw gauntlet, etc...).

Opinions
You can max 3 lvls of Iron Fists (+15 dmg bonus) by lvl 7, which is nice and powerful early on, with powerfists you can do 41 dmg.