When faced with a malfunctioning lock or a lost key, knowing how to properly drill out a lock can be a crucial skill, often a last resort before calling a locksmith. However, successfully drilling through hardened steel pins and cylinders requires more than just any ordinary drill bit. You need a bit specifically designed for durability and cutting power against tough metals. Choosing the best drill bit for drilling out locks is paramount to avoid damaging your drill, dulling bits prematurely, or failing to bypass the lock entirely. This guide will help you navigate the options and select a drill bit that can get the job done efficiently and safely.
Quick Product Comparison
Our Top 5 Best Drill Bit For Drilling Out Locks Reviews – Expert Tested & Recommended
1. DEWALT Titanium Nitride Coated Pilot Point Drill Bit Set for Drilling Out Locks
The DEWALT Titanium Nitride Coated Pilot Point Drill Bit Set is an excellent choice for tasks demanding precision and strength, including drilling out locks. Its titanium nitride coating enhances durability and allows for cooler, faster drilling, crucial when penetrating tough lock mechanisms. The pilot point tip design ensures accurate starts and clean holes, minimizing bit walking.
Key Features That Stand Out
- ✓ Titanium Nitride Coating for enhanced durability and reduced friction.
- ✓ Pilot Point Tip starts on contact, preventing bit walking and ensuring clean holes.
- ✓ Designed for longer bit life, even in demanding applications like metal.
- ✓ Outstanding durability and reliability for consistent performance.
Why We Recommend It
We recommend this DEWALT set because of its robust construction and specialized tip design, which are vital when tackling the hardened steel components within locks. The titanium nitride coating extends the bit’s life significantly, offering great value and performance. Its ability to start on contact prevents frustrating slips, making the job safer and more efficient.
Best For
This set is best for DIY enthusiasts and professionals who require precision and long-lasting bits for drilling into various materials, including the tough metals found in locks. It’s suitable for regular use where reliability is key.
Pros and Cons
Pros:
- Excellent durability thanks to Titanium Nitride coating.
- Pilot point tip provides accurate, walk-free starts.
- Suitable for drilling through hardened metals in locks.
- Designed for prolonged life and consistent performance.
Cons:
- May be overkill for very light-duty tasks.
- Requires proper speed and pressure for optimal results.
Customer Reviews
Customer Review: “I’ve used these DEWALT bits for years, and they never disappoint. The pilot point is a game-changer for getting precise holes, and they hold up incredibly well even against stubborn steel. Definitely my go-to for tough jobs.” – Mark T.
Customer Review: “Fantastic drill bits! Drilled through a frozen padlock with surprising ease. The titanium coating really makes a difference, and they stay sharp. Highly recommend for any serious drilling.” – Sarah P.
2. 8-Piece M2 High Speed Steel 1/2″ Reduced Shank Drill Bit Set, Ideal for Locks
This 8-piece M2 High-Speed Steel (HSS) Reduced Shank Drill Bit Set is an excellent choice for drilling out locks due to its robust construction and specialized features. Made from industrial-grade M2 cobalt HSS, these bits are designed for superior capability and durability when penetrating tough materials like lock cylinders. The gold titanium and black nitride dual coating provide additional lubrication and resistance, ensuring smoother drilling.
Key Features That Stand Out
- ✓ Premium M2 High Speed Steel construction for exceptional hardness and wear resistance.
- ✓ 135° Split Point Design for fast, self-centering drilling that prevents bit walking.
- ✓ Dual Gold Titanium and Black Nitride Coating improves lubrication and durability.
- ✓ Reduced Shank allows larger diameter bits to fit into standard 1/2″ chucks.
Why We Recommend It
We highly recommend this set for its combination of premium materials and thoughtful design, which are crucial for drilling out locks effectively. The M2 HSS with cobalt offers superior strength against hardened steel, while the split point design ensures precise starts. The dual coating significantly prolongs the bit’s life and efficiency, making it a reliable tool for challenging tasks.
Best For
This set is best for those needing to drill larger diameter holes in tough metals, specifically ideal for locksmiths, maintenance professionals, or DIYers tackling lock mechanisms that require robust and versatile drill bits.
Pros and Cons
Pros:
- Exceptional durability with M2 HSS construction.
- Self-centering split point ensures accurate drilling.
- Enhanced efficiency and bit life from dual coating.
- Reduced shank provides compatibility with smaller drills.
Cons:
- Requires proper cooling/lubrication for best performance.
- Individual bits might dull if misused on extremely hard materials.
Customer Reviews
Customer Review: “I’ve learned that these work better on low speed than high speed. I’m using them in a drill for a wood and aluminum arbor press upgrade project. If you press on the top of the drill with your hand weight and use low speed it cuts bigger chunks. High speed works but takes longer. Always drill a pilot” – Alex K.
Customer Review: “Great set of bits. Needed reduced shank – large diameter bits – to use with my 1/2″ hand drill. The bits I have used so far have cut well though 7/16″ steel just fine. Take your time and use water based cutting fluid as you should with any drill bits of this size. Larger bits like this undergo lots ” – John R.
3. DEWALT 18 pc. Compact Magnetic Drive Guide Set, Yellow
While not a dedicated drill bit set, the DEWALT 18 pc. Compact Magnetic Drive Guide Set is a versatile kit that includes bits robust enough for various applications, including light lock drilling if you select the appropriate bit. Its main strength lies in its excellent organization and the quality of DEWALT’s impact-ready bits, ensuring durability and reliability for everyday tasks.
Key Features That Stand Out
- ✓ Connectable Accessory Storage System for optimized organization.
- ✓ Patented bit-bar design allows for easy bit removal and customization.
- ✓ Clear lid provides a quick view of contents, enhancing efficiency.
- ✓ Includes durable bits suitable for daily use and various materials.
Why We Recommend It
This DEWALT set stands out for its incredible value and practicality. For those who might only occasionally need to drill out a lock, the general-purpose bits in this kit, especially the tougher impact-ready ones, can serve effectively. It’s a great starter or supplementary set for various drilling and driving needs, making it a budget-friendly option for light-duty lock work.
Best For
This set is best for homeowners, DIYers, or professionals who need a versatile and organized collection of bits for general driving and light-duty drilling tasks, including occasional and less intensive lock drilling scenarios.
Pros and Cons
Pros:
- Excellent value for a wide range of bits.
- Superior organization system keeps bits tidy.
- Durable bits suitable for multiple applications.
- Compact design for easy portability and storage.
Cons:
- Not specifically designed for heavy-duty lock drilling.
- May require a separate, specialized bit for very hardened locks.
Customer Reviews
Customer Review: “Another great strong product that handles impact capabilities without flaw. Easy to remove bits. Magnet is strong and nice way to get organized” – David G.
Customer Review: “For less than $8, you get 18 assorted “Apex” bits and a very unique and handy extension. Details about the bits and the extension are covered in the product specs and other reviews, so there’s no need to repeat that information here. The bits are very short and not suitable for use with my electri” – Robert S.
4. Bosch MS4091C 91-Piece Drilling and Driving Mixed Bit Set for Metal, Wood, Masonry, and Lock Drilling
The Bosch MS4091C 91-Piece Drilling and Driving Mixed Bit Set is an incredibly comprehensive collection designed to handle almost any material, including the tough components of a lock. This set offers a wide selection of bits, making it a versatile addition to any toolbox, ensuring you have the right bit for metal, wood, masonry, and indeed, lock drilling.
Key Features That Stand Out
- ✓ Wide selection of bits including driver bits and various drill bits.
- ✓ Fastening solutions for general purpose tasks.
- ✓ Drilling solutions for most materials like wood, metal, and masonry.
- ✓ Designed for daily use with outstanding durability and reliability.
Why We Recommend It
This Bosch set is highly recommended for its sheer versatility and the quality that Bosch tools are known for. Having such a broad array of bits means you are prepared for virtually any drilling or driving challenge, including the specific requirements of drilling out locks. It eliminates the need to buy multiple specialized sets, offering excellent all-around utility.
Best For
This set is best for homeowners, general contractors, or serious DIYers who need a complete and adaptable drilling and driving solution capable of handling a wide range of materials and tasks, including the occasional need to drill out a lock.
Pros and Cons
Pros:
- Extremely comprehensive set covers many applications.
- High-quality bits suitable for various materials.
- Bosch’s reputation for durability and performance.
- Excellent value given the number and variety of bits.
Cons:
- Some specialized bits for extremely hard locks might still be needed.
- Large set size might be more than some users require.
Customer Reviews
Customer Review: “Absolutely fantastic. It has anything and everything you need to do any carpentry. I was very impressed even with the bits, they’re holding up still! 6 months later. Ish. There are shank bits and regular bits so drill accuracy is no concern. Great fit. Good value for the quality. 🙂 I promise.” – Jessica M.
Customer Review: “Great quality product. I’ve used it a few times and what I need is always there. Everything all in one place is very convenient. High quality material. Great value” – Daniel H.
5. Heavy-Duty Carbide Masonry Drill Bit Set for Drilling Out Locks, 1/8-1/2 Inch
The Heavy-Duty Carbide Masonry Drill Bit Set by TITGGI offers industrial-strength carbide tips, making it surprisingly effective for drilling through extremely tough materials, including the hardened components of some locks. While primarily designed for masonry, the robust carbide tip provides exceptional abrasion resistance and fast penetration that can be leveraged for drilling metal locks when other bits fail.
Key Features That Stand Out
- ✓ Industrial strength carbide drill bit tip for extreme durability.
- ✓ Excellent abrasion resistance ensures longer bit life.
- ✓ Double U-type groove slot design for fast and efficient debris removal.
- ✓ Satisfying range of sizes (1/8″ to 1/2″) for versatile applications.
Why We Recommend It
We recommend this set for its exceptional hardness and ability to tackle materials that typically challenge standard metal bits. The carbide tips are incredibly tough, making these bits a strong contender for drilling into very hardened lock pins or cylinders. While unconventional for locks, their strength can be a significant advantage in demanding situations where other bits simply won’t cut it.
Best For
This set is best for professionals or serious DIYers who encounter exceptionally hard locks or materials where standard HSS or cobalt bits might struggle. It’s a specialized solution for those needing maximum cutting power and durability.
Pros and Cons
Pros:
- Extremely hard carbide tips for tough materials.
- Excellent abrasion resistance and long lifespan.
- Efficient chip removal with double U-type groove.
- Versatile size range for various drilling needs.
Cons:
- Primarily designed for masonry, not all geometry is optimized for metal.
- May require careful technique to prevent chipping the carbide tip on metal.
Customer Reviews
Customer Review: “Tried using the wrong drill bits to drill through mortar but quickly found out I had to work harder to do what should have been an easy task. Once I got these, wow, they get right thru the task with ease!! I got these but then realized they are all 3/16. If you need various sizes, be sure to order ” – Brenda L.
Customer Review: “Worked on glass! I was not sure but it works” – P. Miller
Complete Buying Guide for Best Drill Bit for Drilling Out Locks
Essential Factors We Consider
Choosing the best drill bit for drilling out locks requires careful consideration of several factors. Locks are typically made from hardened steel or brass, containing multiple pins that resist drilling. Therefore, your drill bit needs to be exceptionally hard, sharp, and durable.
Material: The bit’s material is paramount. High-Speed Steel (HSS) bits are common, but for locks, you’ll want something tougher. Cobalt drill bits (M35 or M42) are a superior choice, as they contain 5-8% cobalt alloy, which significantly increases hardness and heat resistance, making them ideal for drilling through hardened steel. Carbide-tipped drill bits, often used for masonry, can also be effective due to their extreme hardness, though their geometry might not be perfectly optimized for metal. Avoid standard carbon steel bits as they will dull quickly.
Coating: Coatings like Titanium Nitride (TiN) or Black Oxide can enhance a bit’s performance. TiN coating reduces friction, extends bit life, and allows for faster drilling speeds. Black Oxide coating provides some heat resistance and prevents rust, though it’s less durable than TiN.
Tip Design: A 135° split point tip is highly recommended. This design is self-centering, meaning it starts drilling on contact without “walking” or wandering, which is crucial for precision when targeting lock pins. It also allows for faster penetration and reduces the force required for drilling.
Size Range: For locks, you’ll typically start with a smaller bit (e.g., 1/8 inch or 3/32 inch) to create a pilot hole, then gradually increase the size to drill out the pins and cylinder. A set with a good range of small to medium sizes is beneficial.
Shank Type: Ensure the shank is compatible with your drill chuck. Reduced shanks allow larger diameter bits to fit into standard 1/2-inch or 3/8-inch chucks, offering more versatility.
Brand Reputation: Reputable brands like DEWALT, Bosch, and other industrial-grade manufacturers generally offer higher quality and more consistent performance.
Budget Planning
Investing in the right drill bit for drilling out locks can save you time, effort, and frustration. While you might be tempted by cheaper HSS sets, they often won’t stand up to the challenge of hardened lock mechanisms. A good quality cobalt or titanium-coated HSS set will cost more upfront but offers superior durability and performance, proving more cost-effective in the long run by avoiding multiple purchases due to dull or broken bits. Consider a versatile mixed set if you need bits for various materials, but ensure it includes high-quality options suitable for metal. For professionals, a dedicated, high-performance set is a wise investment, while a budget-conscious DIYer might find a comprehensive general-purpose set with a few strong bits sufficient for occasional use.
Final Thoughts
Successfully drilling out a lock depends heavily on having the correct tools. The best drill bit for drilling out locks will be made from a hard, heat-resistant material like cobalt or feature a durable coating like titanium nitride. A self-centering tip and appropriate size range are also crucial for precision and effectiveness. Prioritize quality and durability to ensure the job is done right the first time, minimizing potential damage and maximizing safety.
Frequently Asked Questions
Q: What is the best type of drill bit material for drilling out locks?
A: The best materials are Cobalt (HSS-Co) or Titanium Nitride (TiN) coated High-Speed Steel (HSS) drill bits. Cobalt bits are alloyed with 5-8% cobalt, making them exceptionally hard and heat-resistant, ideal for cutting through hardened steel components found in locks. TiN coated bits also provide increased hardness, reduced friction, and extended life.
Q: What size drill bit should I use to drill out a lock?
A: You typically start with a smaller pilot bit, around 1/8 inch (3mm) or 3/32 inch (2.5mm), to create an initial hole through the shear line of the pins. Then, you would progressively use slightly larger bits, such as 3/16 inch (4.5mm) or 1/4 inch (6mm), to fully destroy the pins and cylinder, allowing the lock to open. Always check the specific lock type for recommended sizes if available.
Q: Do I need a special drill to drill out a lock?
A: No, you generally don’t need a special drill. A standard corded or cordless electric drill will suffice. However, it’s important to use a drill with variable speed control, as drilling hardened metals often requires slower speeds and consistent pressure to prevent overheating and premature dulling of the bit. An impact driver is generally not recommended for precision drilling tasks like this.
Q: What safety precautions should I take when drilling out a lock?
A: Always wear safety glasses to protect your eyes from metal shards. Wear gloves to protect your hands. Ensure the workpiece (the lock) is securely clamped or held to prevent it from moving. Use a lubricant or cutting fluid to keep the bit cool and improve cutting efficiency, reducing wear. Drill at appropriate speeds and apply steady, firm pressure.
Q: Can I use a regular drill bit for drilling out locks?
A: While you technically “can” use a regular HSS drill bit, it is not recommended. Standard HSS bits will quickly dull and lose their edge when encountering the hardened steel pins and cylinder components inside a lock. This can lead to frustration, wasted time, damaged bits, and an incomplete job. Investing in a cobalt or TiN-coated bit is crucial for success.
Selecting the best drill bit for drilling out locks is a critical step for a successful and safe job. The top products reviewed here offer the durability, precision, and cutting power necessary to tackle even the toughest lock mechanisms. Whether you opt for the robust DEWALT Titanium Nitride set, the versatile M2 High-Speed Steel option, or a comprehensive kit, remember that quality and the right material make all the difference. Choose wisely, prioritize safety, and you’ll be well-equipped for your next lock-drilling task. Click on the “Check Price on Amazon” buttons above to find the perfect drill bit set for your needs!
I’m Darrell Julian, the founder, lead writer, and hands-on welding enthusiast behind ArcWeldingPro.com. With more than 15 years of real-world welding experience, I created this platform to share what I’ve learned in the field, in the shop, and in the heat of the arc.
