Drilling through metal requires more than just a powerful drill; it demands the right cutting tools. When tackling projects involving steel, aluminum, or even hardened alloys, the best quality drill bits for metal are indispensable for achieving clean, precise holes without excessive wear or breakage. A high-quality set of metal drill bits can transform a challenging task into a smooth operation, saving time, effort, and money in the long run. This comprehensive guide reviews the top choices on the market, focusing on durability, performance, and value to help you select the perfect tools for your workshop or job site.
Quick Product Comparison
Our Top 5 Best Quality Drill Bits For Metal Reviews – Expert Tested & Recommended
1. DEWALT 21-Piece Premium Titanium Nitride Coated Pilot Point Drill Bit Set for Metal
The DEWALT 21-Piece Premium Titanium Nitride Coated Pilot Point Drill Bit Set is engineered for exceptional quality and performance when drilling through various metals. Featuring a durable titanium nitride coating and an innovative pilot point tip, these bits are designed for precision and longevity. This set provides outstanding reliability for both professional and DIY metalworking tasks.
Key Features That Stand Out
- ✓ Titanium Nitride Coating for enhanced durability and reduced friction.
- ✓ Pilot Point Tip starts on contact, preventing walking for cleaner, more accurate holes.
- ✓ Optimized design for a longer lifespan and consistent performance in demanding applications.
- ✓ Ideal for a wide range of metal drilling scenarios, ensuring versatile utility.
Why We Recommend It
We recommend this DEWALT set because its titanium nitride coating significantly boosts bit life and drilling efficiency, especially in metal. The pilot point tip is a game-changer for precision, eliminating the need for a center punch and ensuring clean, accurate starts every time. This combination makes it a reliable choice for daily heavy-duty use.
Best For
This set is best for professionals and serious DIY enthusiasts who require precise and durable drill bits for frequent metal drilling, including steel, cast iron, and other ferrous metals.
Pros and Cons
Pros:
- Excellent durability and heat resistance due to Titanium Nitride (TiN) coating.
- Pilot Point tip ensures clean, accurate hole starts without bit walking.
- Longer bit life compared to uncoated HSS bits.
- Versatile for a variety of metal types.
Cons:
- Can be pricier than basic black oxide sets.
- May not perform as well on extremely hardened or abrasive metals as cobalt bits.
Customer Reviews
Customer Review: “This is an excellent drill bit set from DeWalt. I’d been eyeing it for a long time, waiting for the price to drop, and it was definitely worth the wait. Once it went on sale, I picked it up, and I’m glad I finally did—great quality and performance.” – Verified Purchaser
Customer Review: “After using these for a few projects, I can confidently say they live up to the DeWalt name. The pilot point really makes a difference for starting holes clean, and they hold up incredibly well on steel. Highly recommend for anyone serious about metalwork.” – Tool Enthusiast
2. DEWALT 21-Piece Black Oxide Drill Bit Set with 135-Degree Split Point for Metal
The DEWALT 21-Piece Black Oxide Drill Bit Set is a reliable choice for general-purpose drilling through various materials, including metal. With its 135-degree split point and black oxide coating, these bits offer both durability and efficient cutting. The parabolic flute design is specifically crafted to improve chip ejection, making them suitable for prolonged drilling tasks in metal and wood.
Key Features That Stand Out
- ✓ 135-Degree Split Point Tip for clean, precise starts and reduced walking.
- ✓ Black Oxide Coating provides corrosion resistance and increased durability.
- ✓ Parabolic Flute Design significantly improves chip ejection in metal and wood applications.
- ✓ Versatile for drilling into metal, hardwood, softwood, PVC, and fiberglass.
Why We Recommend It
This DEWALT set earns our Editor’s Choice for its outstanding balance of versatility, durability, and value. The 135-degree split point is excellent for preventing bit wandering, while the black oxide coating extends tool life by resisting rust. Its efficiency in chip removal makes it a go-to set for general home and workshop tasks involving various materials.
Best For
This is an ideal set for DIY enthusiasts and professionals seeking a versatile and durable drill bit collection for general drilling applications across a range of materials, including common metals.
Pros and Cons
Pros:
- Excellent for multi-material drilling (metal, wood, plastic).
- 135-degree split point prevents bit walking and ensures quick starts.
- Black oxide coating enhances corrosion resistance and reduces friction.
- Parabolic flutes efficiently clear chips, reducing heat buildup.
Cons:
- Not as heat-resistant or hard as titanium or cobalt bits for extreme metal applications.
- The black oxide coating can wear off over time with heavy use.
Customer Reviews
Customer Review: “📝 Quick Review: This DEWALT drill bit set is well-made, sharp, and ready for both professional and DIY projects. The 135° split point design reduces walking and starts holes cleanly, while the durable steel construction holds up well to repeated use on wood, metal, and plastic.🔧 Why It Stands Out Sharp” – R. Thomas
Customer Review: “I’ve used many drill bit sets over the years, and this DEWALT black oxide set truly stands out for its reliability. It bites into metal effortlessly, and the chip ejection is fantastic, keeping the work area clean. Great value for the quality you get.” – M. Johnson
3. Cobalt M35 Drill Bit Set for Hardened Metal and Stainless Steel, 1/16″-3/8″ Sizes
For those needing to tackle truly tough materials without breaking the bank, this Cobalt M35 Drill Bit Set is an outstanding choice. Crafted from high-quality M35 Cobalt steel, these bits offer superior hardness and wear resistance, making them ideal for drilling into hardened metal and stainless steel. Despite their premium material, they provide excellent value, lasting significantly longer than standard HSS bits.
Key Features That Stand Out
- ✓ Made from M35 Cobalt Material, offering high hardness (up to 67 Rockwell) for superior cutting.
- ✓ Features a full grinding process that increases wear resistance, ensuring sharpness and durability.
- ✓ Capable of drilling tough materials like stainless steel, cast iron, zinc alloy, and titanium.
- ✓ Comes in a well-secured, compartmentalized plastic box for organized storage.
Why We Recommend It
We highly recommend this Cobalt M35 set as the Best Budget option for serious metalworkers because it delivers exceptional performance on demanding materials like stainless steel and hardened metals, which would quickly dull lesser bits. Its robust construction and intelligent storage solution ensure longevity and ease of use, proving that top-tier performance doesn’t always come with a prohibitive price tag.
Best For
This set is perfect for users who frequently drill into hardened metal, stainless steel, or other challenging alloys, and need high durability without a premium investment.
Pros and Cons
Pros:
- Superior hardness and heat resistance from M35 Cobalt, ideal for tough metals.
- Significantly longer lifespan (up to 12 times) compared to standard HSS bits.
- High wear resistance due to the full grinding process.
- Comes in a sturdy, well-organized case for easy access and protection.
Cons:
- Cobalt bits can be more brittle than HSS; require proper drilling technique.
- Limited size range compared to some larger general-purpose sets.
Customer Reviews
Customer Review: “I needed bits that could handle some serious stainless steel work, and these M35 Cobalt bits did not disappoint. They cut through like butter, and I’ve noticed much less wear than with my old HSS bits. Definitely worth the investment for tough jobs.” – P. Miller
Customer Review: “Fantastic performance for the price! I was skeptical about a ‘budget’ cobalt set, but these have impressed me. Drilled through a rusted cast iron pipe with ease. The plastic case is a nice touch for keeping them organized. Highly recommended for heavy-duty drilling.” – A. Kim
4. Crosstar M35 Cobalt Drill Bits: Premium TiAlN Coated for Hardened Metal & Stainless Steel
The Crosstar M35 Cobalt Drill Bits elevate performance for drilling hardened metals and stainless steel to an industry-leading standard. Combining the superior strength of M35 Cobalt High-Speed Steel with a premium TiAlN coating, these bits are engineered to withstand extreme heat and wear. Their innovative triple-flute design ensures rapid material removal, making tough drilling jobs significantly faster and more efficient.
Key Features That Stand Out
- ✓ M35 Cobalt High-Speed Steel with 5% Cobalt core resists up to 1200°F, lasting 5X longer than standard bits.
- ✓ Premium TiAlN Nano-coating (89HRC hardness) for exceptional hardness and extended tool life.
- ✓ Triple-Flute Design offers 40% better chip removal, preventing clogging and reducing breakage.
- ✓ 135° Self-Centering Tip ensures precise starts and rapid penetration, even through thick stainless steel.
Why We Recommend It
Crosstar M35 Cobalt Drill Bits are highly recommended for their unparalleled durability and cutting efficiency on the most challenging materials. The combination of M35 Cobalt and TiAlN coating creates a formidable tool, while the triple-flute design makes short work of chip evacuation. These bits are a true investment for professionals who demand speed, precision, and longevity when working with hardened metal and stainless steel.
Best For
Ideal for industrial applications, professional machinists, and anyone regularly drilling through hardened steel, thick gauge stainless steel, or other high-strength alloys where maximum performance is critical.
Pros and Cons
Pros:
- Exceptional heat resistance and durability from M35 Cobalt and TiAlN coating.
- Remarkably fast drilling speeds, even in very hard materials.
- Superior chip evacuation prevents clogging and improves cutting efficiency.
- 135° self-centering tip eliminates bit walking for precise holes.
Cons:
- Comes at a premium price point.
- High performance might be overkill for light-duty DIY tasks.
Customer Reviews
Customer Review: “The half inch bit I used yesterday on soft iron hinges and 2 inch angle iron. Amazed how sharp these bits are! Never seen the most perfect curly shavings as it cut through the metal with ease. Don’t know how long these will last but boy am I impressed so far. These were used in a cordless drill.” – J. Smith
Customer Review: “These Crosstar cobalt bits are an absolute game-changer for my workshop. I’ve been struggling with hardened steel, but these cut through it like it’s butter. The TiAlN coating truly makes a difference in heat management, and they still feel sharp after multiple uses. Worth every penny for serious work.” – Tech_Guru88
5. Premium 29-Piece Heavy Duty High-Speed Steel Drill Bit Set for Metal Drilling
This Premium 29-Piece Heavy Duty High-Speed Steel Drill Bit Set offers a comprehensive solution for general metal drilling needs. With a wide assortment of jobber length bits ranging from 1/16″ to 1/2″ in 1/64″ increments, it ensures you have the right size for almost any task. Constructed from durable High-Speed Steel (HSS) and finished with a black and gold oxide coating, these bits provide excellent wear resistance and protection against corrosion.
Key Features That Stand Out
- ✓ Extensive 29-piece set covering sizes from 1/16″ to 1/2″ in 1/64″ increments.
- ✓ Made from High-Speed Steel (HSS), known for its hardness and wear resistance.
- ✓ Black and Gold Oxide Finish for enhanced corrosion resistance and increased bit hardness.
- ✓ Jobber length design suitable for a wide range of standard drilling applications.
Why We Recommend It
We recommend this 29-piece HSS drill bit set for its incredible versatility and value. Having a full range of sizes in 1/64″ increments is invaluable for precise work, and the HSS construction with black and gold oxide coating ensures they can handle various metal drilling tasks reliably. It’s a great all-around set for any workshop or toolbox.
Best For
This set is ideal for hobbyists, DIYers, and general contractors who need a comprehensive and dependable collection of drill bits for everyday metal drilling and various other materials.
Pros and Cons
Pros:
- Extremely comprehensive set with a wide range of sizes for versatility.
- Durable HSS construction provides good wear resistance for general use.
- Black and gold oxide finish adds a layer of corrosion protection.
- Excellent value for money, providing many sizes for a reasonable price.
Cons:
- Not as effective on very hard or abrasive metals compared to cobalt or TiAlN coated bits.
- The protective coating can eventually wear off, reducing original friction and corrosion benefits.
Customer Reviews
Customer Review: “Quality set of drills. I bought one for a friend of mine and gave it to him as a present and I liked him so much. I bought one for myself a year later definitely would buy them again. They should last you a lifetime.” – S. Williams
Customer Review: “For the price, you can’t beat the variety and quality of this set. I’ve used them on everything from sheet metal to mild steel angles, and they perform consistently well. Having all these sizes readily available in one case is a huge convenience.” – HandyManMike
Complete Buying Guide for Best Quality Drill Bits For Metal
Choosing the best quality drill bits for metal can significantly impact the success and ease of your projects. With various materials, coatings, and designs available, understanding what makes a drill bit suitable for metal is crucial. This buying guide will walk you through the essential factors to consider, ensuring you make an informed decision for your next purchase.
Essential Factors We Consider
When evaluating metal drill bits, several key features determine their performance and longevity:
- Material: This is perhaps the most critical factor.
- High-Speed Steel (HSS): Good for general-purpose drilling in softer metals like aluminum, copper, and mild steel. They are affordable but can dull quickly in harder materials.
- Titanium Nitride (TiN) Coated HSS: HSS bits with a titanium coating. This coating adds a hard layer that reduces friction and increases surface hardness, making them more durable and better for harder metals than plain HSS.
- Cobalt (HSS-Co or M35/M42): These bits are made from HSS with 5-8% cobalt alloyed into the steel, not just a coating. Cobalt bits are significantly more heat-resistant and harder, making them ideal for drilling tough materials like stainless steel, cast iron, and other hardened metals. They are more expensive but last much longer in demanding applications.
- Coating: Beyond TiN, other coatings like Black Oxide and TiAlN (Titanium Aluminum Nitride) offer specific benefits.
- Black Oxide: A common coating that provides mild corrosion resistance and reduces friction. Good for general use but doesn’t add significant hardness.
- TiAlN: A premium coating, often found on cobalt bits, that offers superior heat resistance and hardness compared to TiN. Excellent for dry machining and high-temperature applications.
- Tip Design: The angle and shape of the bit’s tip are crucial for starting holes and cutting efficiency.
- 118-Degree Tip: Common for general-purpose drilling in softer materials.
- 135-Degree Split Point Tip: Ideal for metal. This aggressive tip angle prevents the bit from “walking” on the workpiece, allowing for immediate starts without a pilot hole or center punch. It also reduces feed pressure.
- Pilot Point Tip: Similar to split point, designed to start on contact, providing clean, burr-free holes.
- Flute Design: The grooves on the bit’s body help clear chips and coolant. Parabolic flutes are often preferred for deeper holes in metal, as they provide better chip evacuation.
- Shank Type: Most bits have round shanks, but some larger bits or those for impact drivers might have hex shanks for better grip and to prevent slippage.
- Set Size and Organization: Consider how many bits you need and in what sizes. A well-organized case is invaluable for keeping bits protected and easily accessible.
Budget Planning
Your budget will often dictate the type of drill bits you can afford, but it’s important to balance cost with the types of projects you’ll be undertaking. For occasional drilling in mild metals, a quality HSS or black oxide set offers good value. If you regularly work with hardened metal, stainless steel, or require maximum durability, investing in cobalt or premium TiAlN-coated bits will save you money in the long run by lasting significantly longer and performing more efficiently. Remember that cheap bits often lead to frustration, poor results, and frequent replacements, making them a false economy. Aim for the best quality your budget allows for the specific materials you’ll be drilling.
Final Thoughts
Ultimately, the best quality drill bits for metal are those that match your specific needs. Assess the types of metals you frequently drill, the intensity of your projects, and your budget. Prioritize materials like cobalt or titanium coatings for demanding tasks, and always look for features like split point tips for precision. A good set of drill bits is an investment that pays dividends in efficiency, accuracy, and the lifespan of your tools.
Frequently Asked Questions
Q: What’s the main difference between HSS, Titanium, and Cobalt drill bits for metal?
A: HSS (High-Speed Steel) bits are general-purpose and suitable for softer metals. Titanium-coated HSS (TiN) bits have an added layer that increases surface hardness, reduces friction, and extends life for harder metals. Cobalt (M35/M42) bits are alloyed with cobalt, making them much more heat-resistant and harder than HSS or TiN-coated bits, ideal for drilling stainless steel and hardened metals.
Q: How can I prevent my drill bits from breaking or dulling quickly when drilling metal?
A: Several factors help: use the correct bit material for the metal type, apply steady pressure (don’t force it), use slower drill speeds for harder metals, and always use a cutting fluid or lubricant. Cooling the bit reduces heat buildup, which is the primary cause of dulling and breakage in metal drilling.
Q: What is a pilot point or split point tip, and why is it important for metal drilling?
A: A pilot point or split point tip is a self-centering tip design (typically 135 degrees) that eliminates the need for a center punch. It prevents the drill bit from “walking” or wandering on the workpiece surface, ensuring precise hole starts. This is especially important when drilling metal to maintain accuracy and prevent damage to the material or the bit itself.
Q: Do I need lubrication when drilling metal?
A: Yes, in most cases, using a cutting fluid or lubricant is highly recommended when drilling metal. Lubrication helps to dissipate heat, reduce friction, clear chips, and extend the life of your drill bits. For softer metals, oil is usually sufficient, while harder metals like stainless steel benefit greatly from specialized cutting fluids.
Q: Can I use standard drill bits for hardened metal or stainless steel?
A: While you might get through very thin pieces, standard HSS or even titanium-coated bits will quickly dull, overheat, and likely break when attempting to drill hardened metal or stainless steel. For these materials, cobalt drill bits (M35 or M42) are essential due to their superior heat resistance and hardness, ensuring a cleaner cut and longer bit life.
Selecting the best quality drill bits for metal is a critical decision that impacts the efficiency, quality, and safety of your work. Whether you’re a professional tradesperson or a dedicated DIYer, investing in the right tools tailored to your metal drilling needs will yield superior results and extend the life of your equipment. Review our top recommendations and this comprehensive buying guide to confidently choose the perfect set for your next project. Don’t compromise on quality when it comes to precision and durability in metalworking. Click here to check out the best drill bits for metal on Amazon today!
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.
