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

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.

View attachment 1192145319_7DaysToDie2020-12-2704-07-04.mp4