Stripping a screw head is one of the most frustrating moments in any DIY project. The drive recess rounds out, your bit slips, and the screw refuses to budge. Fortunately, you can often free a stripped screw with simple household items or a few specialized tools. This guide covers the full range of methods, starting with the gentlest approach and moving to more aggressive techniques, along with safety steps for each.
What You Need
Before you begin, gather a few tools and materials. You likely already own most of these:
- Screwdriver or drill with a bit holder
- Set of screwdriver bits in various sizes and drive types (Phillips, flat head, square, star)
- Wide rubber band or a piece of abrasive cloth
- Small hammer
- Manual impact driver
- Screw extractor set (also called a broken screw extractor)
- Center punch
- Pliers or locking pliers
- Rotary tool with a cutting disc (for cutting a slot)
- Safety glasses
Most of these items are standard in a home hand tool kit. If you do not own an extractor set or impact driver, try the household methods first.
Start with the Gentlest Methods
Many stripped screws can be removed without drilling or special tools. Try these steps in order before moving to more invasive options.
Use the Correct Bit Size and Apply Firm Pressure
A common cause of stripping is using a bit that is too small. For a Phillips-head screw, the bit should fit snugly into the recess with no wobble. If the screw is already partly stripped, select a bit that still engages the remaining material. Press the bit into the screw head with as much downward force as you can manage while turning slowly. Steady, heavy pressure often gives the bit enough grip to back the screw out.
Place a Rubber Band Between the Bit and the Screw Head
This old trick works on screws that are only lightly stripped. Stretch a wide rubber band across the screw head, then push your screwdriver bit into the rubber and into the recess. The rubber fills the gaps left by the damaged drive, giving the bit something to grip. While applying firm downward pressure, turn the screw counterclockwise. If the rubber tears, try a thicker band or a piece of abrasive cloth (like sandpaper or a non-slip drawer liner) instead.
Tap the Bit into the Screw Head
For deeper engagement, lightly tap the handle of your screwdriver or the bit itself with a hammer. This drives the bit deeper into the recess and can create enough purchase to turn the screw. Use light taps; you do not want to deform the screw head further. This method works best with a screwdriver that has a solid metal cap at the end of the handle or with a bit held in a bit holder that you can strike directly.
Move to More Aggressive Methods
If the gentle techniques fail, the screw head still has enough material to work with. These methods trade a little more risk for a much better grip.
Switch to a Larger Bit or a Different Drive Type
A stripped Phillips recess often accepts a larger bit from the same drive type. If the screw uses a #2 Phillips, try a #3. You can also switch drive types entirely. A star (six-lobe) bit of the appropriate size can bite into a rounded-out Phillips recess, as can a square (Robertson) bit. Press the bit firmly into the screw head and apply steady reverse torque. Do not force it so hard that you damage the screw head further.
Use Pliers or Locking Pliers on a Raised Head
If the screw head protrudes above the surface, locking pliers can grip the outer rim of the head. Clamp the pliers onto the screw head as tightly as possible, then rotate the pliers counterclockwise. For screws that sit flush or below the surface, you may need to cut a slot (see below) or switch to an extractor.
Cut a Slot for a Flat Screwdriver
When the drive recess is completely rounded, you can create a new slot for a flat-head screwdriver. Use a rotary tool with a thin cutting disc to cut a straight, deep slot across the center of the screw head. Wear eye protection and hold the tool steady. Once the slot is cut, insert the largest flat-head bit that fits the slot and turn counterclockwise. This method sacrifices the screw head but often saves the workpiece.
Advanced Methods for Stubborn Screws
For screws that resist all the above attempts, you will need dedicated tools. Proceed carefully, especially when drilling or using extractors.
Manual Impact Driver
A manual impact driver is a heavy-duty tool that combines a downward strike with a rotational force. Place the correct bit into the driver, engage the screw head, and strike the end with a hammer. The driver automatically twists the bit as you hit it, delivering a strong jarring motion that loosens seized screws. This tool is especially effective on screws that are stuck due to rust or thread-locking compound. Use it only in the reverse (loosening) direction for removal.
Screw Extractor Set
A screw extractor set includes left-hand threaded tapered bits designed to grip the inside of a hole you drill into the screw head. Follow these steps closely:
- Select an extractor whose size matches the screw. The extractor packaging usually lists which screw gauge it fits.
- Use a center punch to mark the exact center of the screw head. This keeps your drill bit from walking.
- Drill a pilot hole into the screw head using the recommended drill bit (often supplied with the set). Drill to the depth shown in the instructions. Wear eye protection throughout this step.
- Insert the extractor into the pilot hole. Use a tap handle or a drill set to slow speed in reverse. The extractor threads bite into the hole and, once tight, begin turning the screw out.
- Apply steady, slow reverse pressure. Do not rush. If the extractor slips, stop and reassess.
Safety note: Extractor bits are very hard and brittle. They can snap if you apply too much force or if the bit is misaligned. A broken extractor embedded in a screw is extremely difficult to remove. Always use slow speed in reverse, keep the extractor aligned with the hole, and never force it. If the extractor does not grip, try a slightly larger pilot hole and extractor size.
Common Mistakes to Avoid
Knowing what not to do can save you time and frustration.
- Choosing the wrong bit size. Using a bit that is too small or too large for the screw drive is the most common cause of stripping in the first place. Always match the bit to the recess as closely as possible.
- Applying too little downward pressure. Without firm pressure, the bit can cam out (jump out of the recess) and strip the head further. Push hard and keep the bit engaged.
- Drilling too deep. When using a screw extractor, drilling too far can damage the threads in the workpiece or go all the way through. Follow the depth guide on the extractor set.
- Using too much speed. High drill speed generates heat and reduces control. Keep the drill or driver at a low speed setting, especially when using an extractor.
- Giving up too early. The first method you try may not work. Move through the list from gentle to aggressive rather than jumping straight to drilling.
How to Prevent Stripped Screws
You can avoid most stripping problems with a few simple habits.
- Use the right bit for the drive type. Do not force a Phillips bit into a Pozidriv screw or a flat bit into a cross-shaped recess. Keep a well-organized set of screwdrivers and bits so you always have the correct tool.
- Drill pilot holes. For hardwood, metal, or any material that resists screw insertion, drill a pilot hole slightly smaller than the screw shaft. This reduces the force needed to drive the screw and protects the drive recess.
- Set the clutch correctly. On a cordless drill or driver, set the clutch to a low or medium setting when driving screws into soft materials. This prevents the driver from camming out when the screw seats fully.
- Apply steady, straight pressure. Keep the bit aligned with the screw axis. Angling the driver makes the bit more likely to slip.
- Replace worn bits. A bit with rounded edges cannot grip the drive properly. Discard bits that show wear and replace them with fresh ones from your hand tools collection.
Troubleshooting
Even with careful technique, you may encounter setbacks. Here is how to handle them.
The screw head is completely rounded and flush with the surface. You will need a screw extractor or a left-hand drill bit. Left-hand drill bits rotate counterclockwise and sometimes catch the screw and back it out during drilling. Try that before moving to a dedicated extractor.
The extractor broke off inside the screw. This is a tough situation. You can try drilling a small hole next to the broken extractor and using a thin punch to break it apart, but this risks damaging the workpiece. Often the cleanest solution is to drill the entire screw out and install a slightly larger screw, or fill the hole and start fresh.
The screw is stuck because of rust or thread-locker. Apply a penetrating oil to the screw and let it soak for several hours or overnight. Then try the manual impact driver. For thread-locker, heat the screw head with a soldering iron or heat gun (be careful around flammable materials) to soften the compound, then attempt removal.
The screw head sheared off completely. If the screw broke below the surface, you will need to drill it out or use a screw extractor in the remaining shank. Center-punch the exact center of the broken shaft, then drill a pilot hole and use an extractor. If the screw protrudes slightly, locking pliers may still grab it.
FAQ
Will a rubber band really help remove a stripped screw?
Yes, a wide rubber band can fill the gaps in a partially stripped drive recess and provide enough grip to back the screw out. It works best on screws that are not fully rounded and when you apply firm downward pressure. If the rubber tears, try a piece of abrasive cloth or a latex glove instead.
Can I use a star bit on a stripped Phillips screw?
Often yes. A star (six-lobe) bit of the correct size can bite into the remaining material of a damaged Phillips recess. Press the bit in firmly and turn slowly. This method works best when the screw is not seized or rusted.
What is the safest way to use a screw extractor?
Start by center-punching the screw head, then drill a pilot hole straight into the center. Use slow speed in reverse (counterclockwise) and keep the extractor aligned with the hole. Stop if you feel resistance increase suddenly; applying too much force can snap the extractor. Wear eye protection throughout the drilling and extraction steps.
How do I keep screws from stripping in the first place?
Match the bit size to the screw drive exactly, drill pilot holes in hard materials, set your drill clutch to a moderate setting, and always push straight into the screw. Inspect bits for wear and replace them when the edges start to round. These habits dramatically reduce the chance of stripping.
Removing a stripped screw takes patience, but the right technique usually gets the job done. Start with the gentlest method that fits your situation, work your way up only if needed, and always wear eye protection when drilling or cutting metal. With a little persistence, you will have that screw out and your project back on track.
