Top 10 Best HSS Drill Bits For Metal You Must Try
The best HSS drill bits for metal are essential tools engineered to tackle the challenges of drilling through tough, rigid materials with accuracy and efficiency. These drill bits utilize high-speed steel technology, offering superior hardness and heat resistance that allow for prolonged use in demanding industrial and DIY applications. Whether cutting through stainless steel, aluminum, or other alloys, selecting the appropriate drill bits can significantly impact the quality and clean finish of your work.
Innovations in coating materials like titanium and cobalt have further enhanced the lifespan and cutting speed of these bits. Understanding the differences in geometry, coating types, and shank designs is crucial to optimize performance for various metal drilling tasks.
Dive deeper to explore which options provide the ideal balance of durability, precision, and cost-effectiveness for your projects.
Best HSS Drill Bits for Metal: Top Picks for 2026
| Image | Product | Buy |
|---|---|---|
Top Picks- 1  | DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT Best for: General metal drilling | Check Price On Amazon |
Top Picks- 2  | CaRoller 29Pcs Drill Bit Set,135 Degree Tip High Speed Steel Best for: Precision angled drilling | Check Price On Amazon |
Top Picks- 3  | (20PCS) 1/8″ Cobalt Drill Bit, HSS M35 Metal Drill Bits Best for: Heavy-duty metalwork | Check Price On Amazon |
Top Picks- 4  | 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length Best for: Fine detailed metalwork | Check Price On Amazon |
Top Picks- 5  | Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Best for: Professional metal drilling | Check Price On Amazon |
1. DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT
Best for: Durable general-purpose metal drill set.
Featuring 21 black oxide-coated high-speed steel bits, this set addresses multiple drilling needs by enhancing corrosion resistance and durability for metal, wood, and plastic applications. The parabolic flute design improves chip ejection, enabling smoother work on hard surfaces.
The 135° split-point tips enable direct contact drilling without walking, ensuring precision from the start. Its 31° helix angle reduces aggressive cutting, promoting control, while the assortment covers a broad range of sizes suitable for diverse jobs.
Pros
- Black oxide coating resists corrosion
- 135° split-point tips prevent walking
- Parabolic flute design improves chip ejection
- 31° helix angle reduces over-aggressiveness
Cons
- Limited to smaller industrial applications due to lack of cobalt
Ideal for DIY enthusiasts and professionals requiring reliable general-purpose drill bits for various metals and materials. Its versatile assortment suits those tackling mixed projects involving metal and wood.
2. CaRoller 29Pcs Drill Bit Set,135 Degree Tip High Speed Steel
Best for: Comprehensive large drill bit variety.
This 29-piece set offers an expansive size range from 1/16″ up to 1/2″, accommodating diverse metal drilling demands. The black and gold finish enhances bit lifespan and performance for both professional and hobbyist metalworking tasks.
The inclusion of sizes up to 1/2″ diameter allows for drilling larger holes in metal and plastics. Packaged in a metal indexed storage case, these high-speed steel drill bits deliver convenience and quick selection for precise project requirements.
Pros
- Wide size range from 1/16″ to 1/2″
- Durable black and gold finish
- Includes metal indexed storage case
- Suitable for metal, stainless steel, and plastics
Cons
- Lacks cobalt composition for extreme heat resistance
Designed for users needing a broad assortment of drill bit sizes to handle varying metal sheet thicknesses and plastics. Professionals appreciating organized storage will find this especially useful.
3. (20PCS) 1/8″ Cobalt Drill Bit, HSS M35 Metal Drill Bits
Best for: High-hardness cobalt bits for tough metals.
This 20-piece collection presents 1/8″ diameter drill bits crafted from M35 grade high-speed steel with 5% cobalt, providing elevated hardness and heat resistance to penetrate hardened metals efficiently.
With a 135° self-centering split point, these bits minimize walking on metal surfaces, enabling precise starts. Coming in a plastic storage case, the set guarantees easy organization and protection. They excel on stainless steel, cast iron, and other hard metals.
Pros
- M35 grade HSS with 5% cobalt for durability
- 135° split-point improves centering
- Plastic case for storage and portability
- Effective on hardened and stainless metals
Cons
- Limited to 1/8″ diameter sizes only
Well-suited for machinists and metalworkers who frequently drill small-diameter holes in hardened steel and stainless metals. Its uniform size drill bits specialize in repetitive precision drilling.
4. 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length
Best for: Multi-size cobalt set for stainless steel.
Offering 13 sizes ranging from 1/16″ to 1/4″, these M35 cobalt drill bits deliver a balanced set ideal for cutting through stainless steel, cast iron, and softer metals while maintaining sharpness and durability.
With a 135° split-point tip, these bits provide self-centering action reducing bit walking, suitable for various metalworking applications. The jobber length ensures versatility for shallow to moderately deep holes, while accompanying storage promotes organization.
Pros
- M35 cobalt for hardness and heat resistance
- 135° split point reduces walking
- Jobber length suits diverse applications
- Range covers common drill sizes
Cons
- Lower piece count compared to larger sets limits variety
Perfect for metal fabricators and hobbyists requiring a compact, effective cobalt drill bit assortment primarily for stainless steel and similar metals. The size variety covers most general drilling needs.
5. Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill
Best for: Premium cobalt twist bits for precision.
This compact 13-piece kit features M35 cobalt bits, boasting enhanced heat resistance and hardness over standard steel for prolonged tool life and efficient drilling through metal, wood, and plastic.
Boasting a 135° split-point design and straight shanks, these drill bits offer precise, walk-preventive starts for faster penetration. The fully ground twist improves chip evacuation, raising drilling efficiency across hard metals and composites.
Pros
- M35 cobalt ensures superior wear resistance
- 135° split-point offers precise starts
- Fully ground twist for smooth chip removal
- Suitable for multiple materials
Cons
- No storage case included, reducing portability
Appropriate for professionals and craftsmen who require resilient drill bits for demanding metal and mixed-material projects, where precision and heat tolerance are essential.
6. Crosstar M35 Cobalt Drill Bit Set,Three-Flute Design,1/16″-1/2″,21pcs
Best for: High-performance cobalt bits with TiAlN coating.
With 21 bits made from M35 cobalt steel and enhanced by a Titanium Aluminum Nitride nano-coating, this set withstands extreme heat up to 1472°F, enabling long-lasting use on hardened metals like titanium and stainless steel.
The three-flute design improves chip evacuation, reducing clogging during intensive drilling. This comprehensive kit spans 1/16″ to 1/2″ sizes, fitting a broad range of industrial and workshop tasks, housed in an indexed storage case for easy access.
Pros
- TiAlN coating offers extreme heat resistance
- M35 cobalt steel enhances durability
- Three-flute design for better chip removal
- Wide size range up to 1/2″ diameter
Cons
- Higher hardness may cause brittleness requiring cautious handling
Tailored for metalworkers and professionals drilling tough materials under heavy use, this set combines durability, heat resistance, and size variety for demanding fabrication and repair tasks.
7. GMTOOLS 1/8 inch Cobalt Drill Bits, M35 HSS, 135 Degree
Best for: Specialized 1/8″ cobalt bits for metal precision.
This set contains ten 1/8″ diameter M35 cobalt drill bits, each engineered with 5% cobalt for toughness and heat tolerance, perfect for precise penetration of metal surfaces without premature wear.
The 135° tip ensures self-centering for accurate start points, while its 1-5/8″ flute length supports efficient chip clearing. The plastic carrying case enables organized storage and easy transport for on-site jobs and workshops.
Pros
- M35 cobalt enhances wear and heat resistance
- 135° split point prevents walking
- Sturdy plastic case for storage
- Optimized for metal drilling with 1/8″ size
Cons
- Limited to a single drill bit diameter restricting versatility
Ideal for professionals and hobbyists focused on detailed metalworking projects requiring frequent and consistent drilling of 1/8″ holes with durable and heat-resistant bits.
8. 1/4-Inch Cobalt Steel M35 Jobber Length Twist Drill Bits for
Best for: Jobber length cobalt bits with sharpenable design.
Providing 12 pieces of 1/4″ diameter cobalt drill bits featuring jobber length and a 135° split point, these bits combine toughness and heat tolerance with the ability to be sharpened repeatedly, extending tool lifetime.
The 2-3/4″ flute length and 4″ overall provide versatility for drilling moderately deep holes. Manufactured from high-speed steel alloyed with 5% cobalt, these bits excel on stainless steel, cast iron, and hardened metals, maintaining uniform hardness throughout.
Pros
- Uniform hardness allows repeat sharpening
- 135° split point enables accurate penetration
- Jobber length suits varied drilling depths
- 5% cobalt increases heat and wear resistance
Cons
- Limited color coding or identification on bits
Well-suited to metalworkers requiring durable, maintainable drill bits that hold sharpness over time and handle a range of medium-depth drilling in hardened metals.
9. BeHappy 13Pcs Cobalt Drill Bit Set, M35 HSS, 135 Degree
Best for: Balanced cobalt set for diversified metalwork.
Set containing 13 cobalt drill bits ranging from 1/16″ to 1/4″, crafted from M35 high-speed steel with 5% cobalt, this assortment combines heat resistance, wear durability, and quick penetration for various metal types.
The 135° split-point allows self-centering accuracy, reducing effort and extending bit life. Each tip is professionally hardened and polished to maintain cutting efficiency. This kit appeals to those handling standard drilling sizes across multiple metalworking projects.
Pros
- M35 steel with cobalt for enhanced durability
- Professionally hardened, polished tips
- 135° split-point tip reduces drilling thrust
- Wide range of commonly used sizes
Cons
- Lower customer rating indicates inconsistent quality control
Best for users seeking a reliable, mid-sized cobalt drill bit kit suited for general metal fabrication, maintenance, and repair without demanding specialized super-hard bits.
10. Grevosea 6 Pack Titanium Drill Bit Set, HSS Twist Drill
Best for: Titanium-coated HSS bits for versatile use.
This 6-piece set features titanium-coated high-speed steel twist bits covering sizes from 3mm to 8mm, apt for drilling metal, wood, and plastic, with serrated side cutting improving chip discharge efficiency.
The titanium layer prolongs sharpness and durability beyond uncoated bits. Their HSS core adds toughness while the serrated edges facilitate cleaner cuts and reduced heat build-up, offering a multi-material option for versatile workshop needs.
Pros
- Titanium coating extends bit life
- Serrated side cutting improves chip discharge
- Sizes from 3mm to 8mm cover medium holes
- Suitable for metal, wood, and plastic
Cons
- Limited piece count restricts size availability
Ideal for homeowners and light-duty professionals needing a small, durable drill bit kit capable of handling occasional metal, wood, and plastic drilling with improved longevity.
How to Choose the Right Best HSS Drill Bits for Metal
Material quality and durability
Choosing the best HSS drill bits for metal starts with the steel alloy type and coating quality. High-speed steel variants with cobalt additions offer superior hardness and resistance to wear compared to standard HSS. Bits treated with titanium nitride or black oxide coatings significantly increase durability by reducing friction and corrosion.
Look for drill bits specifying a high cobalt content for handling tough metals and coatings that enhance heat tolerance without chipping. Opt for cobalt HSS bits with titanium-based coatings to ensure long-lasting performance and optimal resistance against metal erosion and heat damage during heavy use.
Size and capacity options
Size versatility is critical when selecting HSS drill bits for metalwork. A comprehensive set should include diameters ranging from at least 1mm to 13mm, covering common drilling needs from fine finishing holes to larger fastener placements. Consider bit length too; standard-length bits suit most applications, but longer bits of 3 inches or more are necessary for deep or through-hole drilling.
Ensure compatibility with your drill’s chuck type—bits with a standard 1/4-inch or 3/8-inch shank fit most handheld drills, while reduced-shank bits cater to specialized tools. Select a set providing wide size choices and multiple lengths to match all metal drilling scenarios.
Performance and precision
Prioritize performance characteristics that deliver smooth, precise holes when buying HSS drill bits for metal. Opt for bits engineered with sharp, optimized point angles around 118° to 135° for faster cutting speeds and minimal walking on the material. Effective chip flute designs improve debris clearance, reducing clogging and heat buildup which adversely affect accuracy and tool life.
Quality bits maintain the hole diameter within tight tolerances and produce clean finishes, avoiding burrs and unnecessary rework. The optimal drill bit combines rapid cutting, excellent chip removal, and consistent hole precision to maximize efficiency in metal drilling tasks.
Temperature management
Effective temperature control is fundamental for prolonging HSS drill bit lifespan during metal drilling. Materials and coatings that promote heat dispersion, such as cobalt alloys and black oxide finishes, prevent rapid wear from thermal stress. Excess heat softens the bit, degrades cutting edges, and shortens service time.
Coatings that resist high temperature help maintain sharpness by shielding the steel from oxidation and friction-generated heat. Choose drill bits with heat-resistant elements and proven coatings designed explicitly to manage temperature for extended durability and sustained cutting performance under demanding metal drilling conditions.
Brand reputation and warranty
Selecting drill bits from well-regarded manufacturers with strong reputations guarantees reliable quality and customer confidence. Established brands back their products with comprehensive warranties, often covering defects and premature wear, which ensures peace of mind. Responsive customer service and the availability of replacement bits or matching sets are crucial for uninterrupted work.
Purchase from reputable sources with positive user reviews and solid after-sales support to secure HSS drill bits that deliver consistent results and safeguard your investment over time.
Which Should You Choose?
- If you need a versatile, general-purpose set for drilling into various materials including metal, hardwood, and PVC, choose a black oxide high-speed steel drill bit set with a parabolic flute design for better chip removal.
- If you require a wide variety of sizes for detailed or precision metalworking tasks, choose a comprehensive high-speed steel drill bit kit with 29 or more pieces covering small to medium diameters.
- If you frequently drill into harder metals or need longer-lasting durability and heat resistance, choose cobalt M35 HSS drill bits with a 135-degree split point for improved cutting efficiency and toughness.
- If you are working primarily with hardened metals or stainless steel, choose cobalt drill bits featuring three-flute designs or extended lengths to handle tougher materials without excessive wear.
Quick Best Hss Drill Bits For Metal Buying Checklist
- Check Material Composition: Ensure bits are made from high-speed steel with quality coatings for durability.
- Choose Appropriate Sizes: Select drill bits that fit the metal thickness and hole diameter required.
- Verify Compatibility: Confirm the drill bit shank fits your drill’s chuck size perfectly.
- Assess Heat Resistance: Look for bits with coatings or treatments that reduce heat buildup.
- Consider Brand Trustworthiness: Opt for brands known for quality and good customer service.
- Review Warranty and Support: Ensure your purchase includes warranty and accessible support services.
Frequently Asked Questions
What Makes Hss Drill Bits Ideal For Metal Drilling?
HSS drill bits are ideal for metal drilling because they maintain sharpness and hardness at high temperatures. Their high-speed steel composition allows them to cut through tough metals efficiently without losing effectiveness, ensuring durability and precision.
Can Coated Hss Drill Bits Perform Better On Metal Than Uncoated Ones?
Yes, coated HSS drill bits often perform better on metal because coatings like titanium or black oxide reduce friction and heat buildup. This enhances the bit’s lifespan and cutting efficiency when drilling through hard metals.
How Do I Choose The Right Size Of Hss Drill Bit For Metal Projects?
Choosing the right size depends on the hole diameter and metal thickness you need to drill. Selecting a drill bit with the appropriate diameter and length ensures clean, accurate holes without damaging the material or drill.
Are Hss Drill Bits Suitable For All Types Of Metal?
HSS drill bits are suitable for most common metals like steel, aluminum, and copper. However, extremely hard metals or alloys may require specialized drill bits with enhanced coatings or materials for optimal results.
How Can I Maintain Hss Drill Bits To Extend Their Usability On Metal?
Proper maintenance of HSS drill bits includes using cutting fluids, avoiding overheating, and sharpening when dull. These practices help keep the bits sharp and reduce wear, ensuring consistent performance on metal surfaces.
Final Thouthgs
Choosing the best HSS drill bits for metal ensures precise, durable drilling with excellent heat resistance and cutting performance. These drill bits offer versatility across various metalworking tasks, making them essential tools for any project. Equip yourself with quality HSS bits to achieve clean holes and long-lasting results with confidence.
