Quck answer
When faced with a bolt with a rounded head, there are several methods you can try to remove it:
1. Use a rubber band or an elastic band: Place the band over the rounded head and press the screwdriver firmly into the bolt. The rubber band will provide extra grip, allowing you to turn the bolt.
2. Try using pliers: If the bolt is sticking out enough, you can use a pair of pliers to grip and turn it. Make sure to apply steady pressure and avoid stripping the bolt further.
3. Apply heat: Heat the bolt with a blowtorch or a heat gun for a few minutes. The expansion from the heat can help loosen the bolt, making it easier to remove.
4. Use a bolt extractor: If the above methods fail, you can try using a bolt extractor. These specialized tools are designed to grip onto rounded bolts and extract them. Follow the instructions carefully when using a bolt extractor.
Remember to always use caution and take safety measures when attempting to remove a bolt with a rounded head.
It’s a common problem to encounter a bolt with a rounded head, but it can be frustrating to deal with. As you try to remove it, the smooth and rounded surface resists any attempt to grip it with a regular wrench. However, there are simple tools you can use to remove it.
Cause and Effect
The most common cause of rounded-off bolt heads is attempting to remove them using the wrong wrench, such as an adjustable wrench. This may also happen when using a metric wrench on an American bolt, or vice versa. This mismatched wrench will round the corners of the bolt head.
Removing the Bolt
Start with simple solutions, and if they don’t work, try other options.
Step 1: Tap the Bolt
If the bolt is stuck due to heat expansion, tap the head of the bolt lightly with a hammer to break it loose.
Step 2: Lubricate the Bolt
If the bolt is stuck due to rust, corrosion, or cross-threading, spray it liberally with penetrating oil and allow it to soak in for at least 10 minutes, or overnight if possible.
Step 3: Use Locking Pliers
Locking pliers, or vice grips, are a common tool for removing stuck bolts. Lock the pliers to the rounded head tightly and twist them in a counterclockwise motion, 1/4 turn at a time, to back it out. Repeat as needed.
Step 4: Use Channel-Lock Pliers
Channel-lock pliers have more leverage than locking pliers and are helpful for removing stubborn bolts. Grasp the head of the bolt with the pliers, squeeze the handles together tightly with both hands, and push counterclockwise.
Step 5: File the Bolt
If the previous steps don’t work, use a file to flatten opposing sides of the bolt. Repeat twisting the bolt counterclockwise with locking pliers or channel locks, using the flattened sides to grip the bolt.
Step 6: Grind the Bolt
If the file won’t work, switch to an oscillating tool with a small cutting wheel and grind flat spots on the head. Use an adjustable wrench, standard wrench, or pliers to remove the bolt.
Step 7: Use an Impact Wrench
If the previous steps don’t work, use an oscillating tool to cut a groove across the top of the rounded bolt head. Place a flat screwdriver tip on the impact wrench, push down, and pull the trigger to back out the bolt.
When All Else Fails
If none of the above steps work, there are other tools available to remove the bolt.
Locking Sockets
Locking sockets have a setscrew. Place the socket on the rounded head, if there’s enough left, and tighten the setscrew to grip the head. Use the socket normally to remove the bolt.
Bolt Splitters
Bolt splitters look like a socket but have a sharp point that cuts into the rounded head. Tap the sharp point into the head with a hammer and use the socket normally.
Tools for Removing Studs and Cutting Bolts
To remove a bolt, use an oscillating cutter to cut off the head as closely as you can. Stud extractors, or easy-outs, are designed to drill into the visible stud of the bolt. Follow the recommended drill bit size to create a hole in the stud, then use a wrench to twist the extractor counterclockwise into the hole. As the extractor goes deeper, it will grip and remove any remaining part of the bolt.
FAQ
1. How did the bolt head become rounded?
If a bolt head becomes rounded, it is usually due to the improper use of a wrench or socket. Applying excessive force or using the wrong size tool can cause the edges of the bolt head to wear down and become rounded.
2. What tools do I need to remove a bolt with a rounded head?
To remove a bolt with a rounded head, you will need a few specialized tools. A bolt extractor or a set of left-handed drill bits can be used to grip the rounded edges of the bolt and rotate it counterclockwise. Additionally, a pair of locking pliers or a pipe wrench can provide extra leverage when attempting to loosen the bolt.
3. How do I use a bolt extractor?
To use a bolt extractor, select an extractor that is slightly smaller than the bolt head. Insert the extractor into a drill and position it over the rounded bolt head. Apply steady pressure and rotate the extractor counterclockwise. The reverse threads on the extractor will grip the bolt and help remove it.
4. Can I use heat to remove a bolt with a rounded head?
Yes, heat can be used as a last resort to remove a bolt with a rounded head. Applying heat to the bolt can cause it to expand, breaking the rust or corrosion that may be holding it in place. However, be cautious when using heat as it can damage surrounding components or cause injury. Use a heat-resistant material to protect nearby parts and always wear protective gloves.
5. What should I do if I can’t remove the bolt with a rounded head?
If you are unable to remove a bolt with a rounded head using the methods mentioned above, it may be necessary to seek professional help. A skilled mechanic or technician will have the experience and tools required to safely remove the bolt without causing further damage to the surrounding components.