how to remove a screw that is stripped

Yum Al Zember

4 min read

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27-11-2024

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Dealing with a stripped screw is a frustratingly common problem for DIY enthusiasts and professionals alike. Whether it's a stubborn cabinet screw, a recalcitrant bolt on your car, or a vital component in your electronics, a stripped screw can quickly halt a project. This article explores various techniques to remove stripped screws, drawing on practical experience and referencing relevant research where applicable. We will cover everything from simple fixes to more advanced methods, ensuring you have the knowledge to tackle most stripped screw situations.

Understanding the Problem: Why Screws Strip

Before diving into removal techniques, let's understand why screws strip in the first place. Over-tightening is the most common culprit. Applying excessive force, especially with the wrong tool, can damage the screw's head and the surrounding material. Using the wrong size screwdriver is another significant contributor. A poorly fitting screwdriver slips, damaging the screw head and potentially the surrounding material. Corrosion and wear also weaken screws over time, making them more susceptible to stripping.

Simple Solutions: For Minor Stripping

For screws with only minor damage to the head, these simple solutions might suffice:

• Improved Grip: Try using a screwdriver with a better fit. A higher-quality screwdriver with a precise tip and a magnetic head often provides a better grip. Consider using a specialized screwdriver like a Torx or Robertson type if the screw's head is designed for one. Sometimes, a tiny amount of firm grip can be enough to turn it.

• Increased Friction: Applying pressure to the screwdriver while trying to remove the screw increases friction. This can be achieved through various methods:

  • Rubber Band: Placing a rubber band over the screw head provides increased friction, enhancing the grip of the screwdriver.
  • Grip Enhancers: Commercially available grip enhancers such as those made from rubber or plastic can also be helpful.

• Impact Driver (for minor damage): If the screw head is not severely damaged, an impact driver can provide sufficient torque to loosen it. The impact driver delivers small but repeated blows, helping to break the bond between the screw and the material.

Intermediate Techniques: When Simple Methods Fail

If the simple methods don't work, you'll need to employ more advanced techniques. These approaches often require specialized tools or a bit more finesse.

• Screw Extractor: Screw extractors are specially designed tools with reverse-threaded bits that bite into the stripped screw. They're available in various sizes and styles; selecting the right size is crucial for success. Drill a pilot hole slightly smaller than the extractor's diameter, then carefully screw the extractor into the stripped screw and turn it counter-clockwise. (Note: Always check the screw extractor's instructions carefully before attempting to use it).

• Dremel/Rotary Tool: A Dremel or similar rotary tool can create a new grip surface on the stripped screw. Using a small grinding bit, carefully create a new, straight slot in the screw head. This new slot will allow you to use a flat-head screwdriver. This method requires precision and patience to avoid further damage.

Advanced Methods: For Stubborn and Deeply Embedded Screws

For extremely stubborn screws, or those deeply embedded, you may need to resort to more advanced methods:

• Penetrating Oil: Applying penetrating oil (like WD-40 or PB Blaster) before attempting any removal technique can help loosen the screw. Allow the oil to penetrate for several minutes or even hours for stubborn cases. This loosens the corroded material which makes the screw less likely to strip.

• Easy-Out: Similar to screw extractors, easy-outs are specialized tools designed to remove broken or stripped screws. However, easy-outs often are more robust and designed to handle more difficult extractions. They typically involve drilling a precise hole and then using a specialized tool to engage and remove the screw.

• Drilling Out the Screw: As a last resort, you can completely drill out the screw. This requires precision and the right drill bit size to avoid damaging the surrounding material. You'll need to drill a pilot hole slightly smaller than the screw's diameter, then gradually increase the bit size until the screw is removed. This method might damage the material and will likely require repair or replacement afterwards.

Preventing Stripped Screws:

Prevention is always better than cure. Here are some tips to avoid stripped screws in the first place:

• Use the Right Screwdriver: Always use a screwdriver that matches the screw head perfectly. Avoid using worn-out or damaged screwdrivers.
• Avoid Over-Tightening: Tighten screws only to the point of snugness. Over-tightening increases the risk of stripping.
• Lubrication: Apply a small amount of lubricant (such as WD-40 or specialized thread lubricant) to the screw before tightening. This reduces friction and the risk of stripping.
• Proper Technique: Apply consistent pressure while tightening or loosening screws; avoid jerky movements.

Conclusion:

Removing a stripped screw can be challenging, but with the right tools and techniques, it's manageable. Start with the simpler methods and progressively move towards more advanced techniques if needed. Remember safety precautions, and don't hesitate to consult a professional if you're unsure about any of these methods. By understanding the causes of stripped screws and adopting preventative measures, you can minimize the chances of encountering this frustrating problem in the future.

(Note: This article provides general guidance. Always refer to the manufacturer's instructions for any specialized tools used.)