Use the Iron Breaker mod in your wrench/ratchet/impact driver

[MechanicalLens]

I know for certain this is a common piece of knowledge, but for anyone who happens to not be in the know, if you put the Iron Breaker mod in your wrenching tool then it'll add the +15% damage bonus to anything you attempt to wrench that counts as iron-based. (Bed frames, cars, radiators, fridges, ovens, etc.)

 

Here's a basic demonstration.