What is an easy out tool? An easy out tool, also called a screw extractor, helps pull out broken bolts or screws when their heads are stripped or snapped off. It is a vital tool for mechanics and DIYers when standard tools fail.
This guide will show you exactly how to use this important tool. We cover everything from picking the right size to the final extraction. Fixing a broken fastener seems hard. However, with the right steps, you can remove that stuck piece easily. This detailed guide offers broken bolt extractor instructions that anyone can follow.
Why Fasteners Break and When to Reach for an Extractor
Fasteners break for many reasons. Over-tightening causes stress. Rust and corrosion seize threads. High heat can weaken the metal. When a bolt head rounds off, you cannot use a wrench. If a bolt snaps flush with the surface, you are in a real bind. This is when a damaged screw removal guide becomes essential. You need a tool that bites into the metal and turns it out.
Common Scenarios Needing an Extractor
- Stripped Phillips or flat-head screw slots.
- Bolts that snap off during removal.
- Studs broken off inside an engine block or frame.
- Corroded fasteners fused by rust.
Gearing Up: What’s in an Easy Out Set?
A typical screw extractor kit tutorial begins with knowing your tools. An easy out set guide shows several key parts. These sets usually contain extractors and specialized drill bits.
Key Components of an Extractor Set
| Component | Primary Function | Material |
|---|---|---|
| Extractors (Easy Outs) | Grip the inner wall of the drilled hole. | Hardened Steel (Often high-speed steel) |
| Reverse Drill Bits | Drill a pilot hole that rotates counter-clockwise. | High-Speed Steel (HSS) or Cobalt |
| Drill Guides/Stops | Ensure drilling is perfectly centered. | Plastic or Metal |
| Tap Handle | Used to turn the extractor manually. | Steel or Cast Iron |
Extractors come in different types, but the two most common are the spiral flute type and the straight flute type. The spiral flute extractor technique is often favored because the helical flutes wedge tighter as you turn them counter-clockwise.
Step One: Selecting the Correct Easy Out Size
Failure to pick the right size is the biggest mistake people make. Using an extractor that is too large can crack the surrounding material. One that is too small will just spin or break inside the hole. Selecting the correct easy out size is crucial for success.
Guidelines for Sizing
- Measure the Broken Fastener: Use calipers to measure the diameter of the remaining broken shaft or the hole it was in.
- Consult the Chart: Every good set comes with a sizing chart. Match your measurement to the recommended drill bit size and extractor size.
- Pilot Hole First: Always start with the smallest recommended drill bit for that size. You can always drill a little more, but you cannot drill less.
Tip: If you are extracting a bolt, the drill bit size should be slightly smaller than the minor diameter of the bolt’s threads. This leaves enough material for the extractor to grip.
Step Two: Preparing the Work Area for Extraction
Preparation prevents further damage. Take your time here. A good setup ensures the removal process goes smoothly.
Safety First
Always wear safety glasses. Metal shards fly when drilling hardened steel. Work in a well-lit area. If working near fuel lines or hot engines, ensure everything is cool.
Center Punching and Marking
You must drill perfectly in the center of the broken shaft. If you drill off-center, you risk damaging the surrounding threads, making the problem much worse.
- Place a center punch directly on the center point of the broken fastener.
- Tap the punch firmly with a hammer. This creates a small dimple. This dimple keeps the reverse drill bit for stuck bolts from wandering when you start drilling.
Step Three: Drilling the Pilot Hole
This is perhaps the most critical technical step. You are creating a path for the extractor.
Choosing the Right Drill Bit
For tough, broken fasteners, standard steel bits might dull quickly. You need bits designed to cut hard metal. Use reverse drill bits if possible. These drill backward. Sometimes, the drilling action itself catches the stuck bolt and spins it out without even needing the extractor.
The Drilling Process
- Lubrication: Use cutting oil on the drill bit, especially if drilling steel or iron. This cools the bit and helps it cut.
- Slow Speed is Key: Use a slow speed on your drill. High speeds generate excessive heat, which can harden the fastener even more, making it nearly impossible to remove.
- Shallow Passes: Drill only a short depth at a time (about 1/8 inch). Pull the bit out frequently to clear chips and check your alignment.
- Depth Check: Drill deep enough for the extractor to gain a solid bite, but not so deep that you risk hitting internal engine parts or components behind the bolt. Consult your broken stud removal method documentation if removing something complex like a manifold stud.
Important Note: If using a standard (forward direction) bit, drill slowly and carefully. The goal is just to create the hole, not necessarily to penetrate fully through the bolt, depending on how deep it is broken.
Step Four: Inserting and Engaging the Extractor
Once the pilot hole is ready, it is time to use the actual extractor. This is where the spiral flute extractor technique comes into play.
Preparing the Extractor
If you are using a new extractor, ensure it is clean and slightly oiled.
Engagement Methods
There are two main ways to turn the extractor:
Method A: Using a Tap Handle
For precise control, especially in tight spots, the tap handle is the best choice.
- Insert the square or hex end of the easy out into the matching opening on the using a tap handle with easy outs.
- Place the tip of the extractor into the pilot hole you drilled.
- Apply firm, steady, inward pressure.
- Slowly turn the tap handle counter-clockwise (lefty-loosey). You should feel the extractor begin to wedge and grip the inside walls of the drilled hole.
- As the grip strengthens, continue turning slowly. The broken piece should start backing out.
Method B: Using a Wrench or Pliers (For larger extractors)
Some larger extractors have a built-in wrench shape or a hex head.
- Fit an appropriately sized wrench or locking pliers onto the extractor head.
- Apply steady turning pressure counter-clockwise.
Dealing with Stubborn Fasteners
If the bolt won’t move, do not force it violently. This often leads to the extractor snapping off inside the hole, which is a much harder problem to fix.
Tips for Increased Grip:
- Heat Cycle: Carefully apply localized heat (like from a small torch) to the material surrounding the broken bolt. Heat expands the outer material, which can break the corrosion seal on the threads. Let it cool slightly, then try the extractor again.
- Lubrication Soak: Apply a penetrating oil (like Kroil or PB Blaster) and let it soak for several hours before attempting to turn the extractor again.
Step Five: Extracting Stripped Screws (A Specific Technique)
When the head is stripped but the shaft is still intact, the process for extracting stripped screws differs slightly from a snapped bolt.
Using Specialized Extractor Bits
Many modern sets include double-ended bits or specialized bits for extracting stripped screws. One end drills a small conical depression; the other end has deep, aggressive reverse threads.
- Drill/Create a Seat: Use the drilling/burnishing end to create a clean, centered seat in the stripped screw head.
- Flip the Bit: Turn the bit over to the extractor side.
- Reverse Drill: Put the drill in reverse. As the reverse bit spins, its aggressive threads bite into the metal depression you made.
- Extraction: Keep the drill in reverse at a slow speed. The screw should spin right out. This method works exceptionally well for wood screws and some machine screws where the head is merely rounded out.
Troubleshooting Common Problems When Using Easy Outs
Even with perfect preparation, things can go wrong. Knowing how to react is key to completing the job.
Problem 1: The Extractor Snaps
This is the worst-case scenario. Easy outs are made of very hard, brittle steel. If they snap, you now have a hardened steel piece stuck inside your pilot hole.
Solution:
- Do Not Drill: Standard drill bits will not cut hardened tool steel.
- Use Carbide Bits: If you have access to carbide-tipped drill bits, you can carefully try to grind away the broken extractor. This requires extreme slowness and specialized bits.
- Electrical Discharge Machining (EDM): For professional shops, EDM is the safest way to burn out the broken piece without damaging the parent material threads.
Problem 2: The Extractor Spins Without Turning the Bolt
This means the grip is insufficient. You did not drill deep enough or the drill hole is slightly too large for the extractor size chosen.
Solution:
- Remove the extractor.
- If possible, carefully increase the pilot hole size slightly, following the easy out set guide for the next size up in extractors.
- If you cannot drill larger, try applying more downward force when turning the extractor to wedge it harder.
Problem 3: The Bolt Breaks Again Deeper
This happens if the original bolt was heavily corroded and the extractor torque fractured the remaining stub further down.
Solution:
- If the new break is flush or below the surface, you must start over. You might need to drill out the entire shaft piece using progressively larger bits until you reach the original thread size, essentially destroying the old fastener completely. This often requires re-tapping the hole afterward.
Maintenance and Storage of Your Extractor Kit
Proper care extends the life of your tools. High-quality extractors are expensive, so protect your investment.
Cleaning
After each use, clean all grease, metal shavings, and debris from the extractors and bits. Use a stiff brush.
Storage
Store the set in its original case. Keep bits and extractors organized by size. Moisture is the enemy; wipe down any steel parts with a light coat of oil before long-term storage to prevent rust.
Advanced Application: Using a Tap Handle Effectively
The tap handle is more than just a handle; it provides the necessary leverage and control. Using a tap handle with easy outs maximizes your success rate.
When turning the tap handle, think of it like tightening a tap into a clean hole. You are applying slow, rotational force. Keep the handle perpendicular to the extractor shaft. Any wobble introduces side pressure, which can snap the extractor or pull it out of its own grip. Maintain constant, even pressure until the resistance breaks.
Summary of Best Practices
To recap the path to successful extraction, remember these fundamentals:
- Measure Twice, Drill Once: Accurate sizing is paramount.
- Use the Center Punch: Never skip marking the center point.
- Go Slow and Cool: Use slow drill speeds and cutting oil.
- Apply Pressure Steadily: Avoid jerky motions when turning the extractor.
- Know When to Stop: If you feel excessive binding or hear cracking, reassess your approach before breaking the tool.
Mastering the spiral flute extractor technique and knowing the steps for broken stud removal method will make you proficient in fixing these frustrating mechanical failures.
Frequently Asked Questions (FAQ)
Can I use an easy out on a stainless steel bolt?
Yes, you can use an easy out on a stainless steel bolt, but it is much harder. Stainless steel is very strong. You absolutely must use high-quality cobalt or carbide drill bits to drill the pilot hole. Go even slower than normal to manage the heat generated.
What is the difference between a spiral flute and a straight flute extractor?
Spiral flute extractors have threads that taper in a corkscrew shape. As you turn them counter-clockwise, these flutes dig deeper into the pilot hole wall, giving a progressively stronger grip. Straight flute extractors have vertical grooves. They rely more on friction and are sometimes easier to remove if they do not grip well, but they are generally less reliable in very tight situations compared to the spiral flute extractor technique.
What if my reverse drill bit gets stuck before the extractor is needed?
If the reverse drill bit for stuck bolts gets stuck while drilling, stop immediately. If the drill is set to reverse, it might start extracting the piece right there! If it doesn’t, try gently wiggling the drill while maintaining slow, reverse rotation. If that fails, switch to a smaller standard bit and carefully drill just a tiny bit deeper to relieve pressure, then try the reverse bit again.
How deep should I drill for a broken bolt?
Generally, you want the pilot hole to be deep enough so that the gripping section of the extractor can fully engage the metal—usually about 1/2 to 2/3 the depth of the broken piece, provided you are not drilling into an obstruction on the other side. The specific depth is dictated by the dimensions in your screw extractor kit tutorial.
Is it better to use an easy out or weld a nut onto the broken bolt?
Welding a nut onto the broken bolt is often a superior method for larger, accessible, rusted, or seized bolts, especially in automotive repair. The heat from welding often breaks the corrosion bond, and the large surface area of the new nut provides excellent turning leverage. However, welding is not practical or safe if the area is near sensitive plastics, electronics, or fuel lines, or if the bolt is too small. For small fasteners, the easy out is the preferred choice.