Don't Have A Drill On Hand? Here's How You Can Remove Broken Bolts Without Drilling

Broken bolts are a common mechanical problem caused by a combination of stress, corrosion, improper installation, and fatigue over time. Removing a broken bolt can be a frustrating task, whether you're working on a car, machinery, or household project. When a bolt snaps off — especially below the surface — it can be difficult to access or grip the remaining piece, and conventional drilling or extractor tools aren't always available or appropriate to use. 

Many people instead choose to use simpler techniques with zero drilling. In some cases, drilling can risk damaging internal threads or the surrounding material. Techniques like using vice grips to ease a broken bolt out or the double-nut method to create a makeshift handle are effective because they use leverage and grip instead of power tools. You can also apply penetrating oils like WD-40, PB Blaster, or Kroil before working to help loosen up any rust and corrosion that bind the bolt in place. For many situations where the bolt still has some thread exposed, these non-drill approaches are effective, preserve the original threads, and require only basic tools that you likely already have in your basic household tool kit.

This first method works if the broken bolt has threads sticking out of the material. You'll need a good pair of vice grips with sharp, intact teeth. Clamp your vice grips tightly around the threads of the broken bolt and turn them counterclockwise to back the bolt out. This works because you're getting direct torque on the bolt threads. If the bolt threads are still sticking out but can't be gripped easily, there's another method you can try. For this method, you'll need two wrenches and nuts. First, thread a nut onto the broken bolt until it's flush with the surface. Thread a second nut on top of the first and tighten them together. Using two wrenches, one on each nut, turn them together counterclockwise to remove the bolt. The two jammed nuts act as a handle you can grip with wrenches. 

If neither of those methods work, you can use a hammer and chisel as a last resort. First, place the chisel against the side of the bolt head. Then, strike the chisel with your hammer to drive the bolt counterclockwise. Whichever method you choose, there are a couple of ways to help make removing rusty or damaged bolts a breeze. Spraying a penetrating oil on the bolt helps loosen any corrosion or rust. You should also make sure your tools are in good condition — worn tools can slip easily, and you need a secure grip for this task.