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If you are searching for the best drill bit for stainless steel, the most important thing is choosing a bit that can handle hard metal cleanly and consistently. Stainless steel is tougher than wood or plastic, so the right drill bit can make the difference between a smooth hole and a frustrating, overheated mess.
When selecting a product from the list, pay close attention to the material type, coating, and the sizes included in the set. Cobalt options are often preferred for stainless steel because they are made for harder metals, while titanium nitride-coated bits can be a practical choice for mixed-use drilling.
Let’s get started!
Our Top Picks at a Glance
| Product | Best For | Buy Now |
|---|---|---|
| BOSCH CO14B 14-Piece Cobalt M42 Set | Best Overall for stainless steel and hard metals | Buy |
| DEWALT DW1361 21-Piece Titanium Nitride Set | Best Value for wood, metal, and plastic | Buy |
| DEWALT DWA1240 Cobalt Alloy Steel Set | Best for cobalt drilling needs | Buy |
Best Drill Bit For Stainless Steel
1. Best Overall: BOSCH CO14B 14-Piece Cobalt M42 Set
- Cobalt M42 drill bit – provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
- Enhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits
- High-heat resistant bits – withstand high-temperature applications for extended periods of time
The BOSCH CO14B 14-Piece Assorted Set is built with cobalt M42 metal drill bits and is designed for drilling applications in stainless steel, cast iron, titanium, and light-gauge metal. With a 4.6 rating and a price of $37.69, it stands out as a strong option for users who want a cobalt set made for hard materials.
This set includes a case, which makes storage and organization easier. The three-flat shank also adds a practical touch for drilling applications, especially when you want a more secure fit while working on tougher metals.
If your main goal is stainless steel, this BOSCH set is one of the most relevant choices in the lineup because it directly lists stainless steel among its intended applications and focuses on cobalt construction.
Pros
- Designed for stainless steel and other hard metals
- Cobalt M42 construction
- Includes a case
Cons
- Higher price than some alternatives
- Only 14 pieces
2. Best Value: DEWALT DW1361 Titanium Nitride Coated Set
- Titanium Nitride Coating Pilot Point for Longer Life
- Starts on contact for cleaner holes
- No spin shanks
The DEWALT DW1361 Drill Bit Set includes 21 pieces and features a titanium nitride coating. It is intended for wood, metal, and plastic, which makes it a versatile choice for users who need a general-purpose bit set. It carries a strong 4.8 rating and is priced at $26.98.
This set is a practical option if you want more pieces for the price and work across several material types. The included case adds convenience for storage and transport, making it easier to keep the set organized.
While it is not listed as a stainless steel-specific product, its metal-drilling focus and strong user rating make it a useful contender if you need a flexible set for mixed applications.
Pros
- 21-piece set
- Strong 4.8 rating
- Includes a case
Cons
- Not specifically marketed for stainless steel
- Material focus is broader than dedicated cobalt sets
3. Best For General Metal Work: DEWALT DWA1184 14-Piece Split Point Set
- 135 Degree Split point tip design to help reduce walking
- High Speed Steel to be used in plastic, wood, and metal
- Tapered web design for extreme durability and resisting breakage
The DEWALT DWA1184 is a 14-piece drill bit set with a 135-degree split point and 3-flats shank. It is made for plastic, wood, and metal, and it has a 4.8 rating with a very accessible price of $14.79.
This set is attractive for users who want a low-cost option with practical design features. The split point is meant to help with starting holes more cleanly, while the 3-flats shank can help with grip during drilling.
For stainless steel, it is a more general-purpose choice rather than a dedicated hard-metal option, but it can still appeal to buyers who need a budget-friendly set for multiple materials.
Pros
- Very affordable
- Strong 4.8 rating
- Includes 3-flats shank
Cons
- Not specifically listed for stainless steel
- Lower piece count than larger kits
4. Best Cobalt Set: DEWALT DWA1240 Cobalt Alloy Steel Set
- Connectable accessory storage system to optimize storage space of drill bits for wood, metal or i-beams
- Patented bit-bar design allows easy removal of drill bits and customizable placement
- DEWALT drill bit set comes with clear lid allowing you to easily see contents at glance
The DEWALT DWA1240 is a 14-piece cobalt alloy steel drill bit set with a pilot point design. It is priced at $26.00 and has a 4.6 rating, placing it among the stronger cobalt options in this list.
Because it is a cobalt alloy steel set, it is a logical pick for harder metals. The pilot point design adds another detail that may help with cleaner starts when drilling.
For shoppers comparing cobalt choices, this set offers a good balance of reputation, pricing, and material focus.
Pros
- Cobalt alloy steel construction
- Includes pilot point design
- Well-rated at 4.6
Cons
- Only 14 pieces
- Not as broad in size variety as larger sets
5. Best Premium Metal Set: Crosstar M35 Cobalt Drill Bit Set
- 🔥 【Engineered for Hardened Metals with M35 Cobalt Steel】 Crafted from premium M35 cobalt high-speed steel (5% cobalt), these bits are specifically designed to tackle the tough materials, including stainless steel, hardened cast iron, high-carbon steel, and titanium alloys, with effective drilling hardness up to 60 HRC.
- ⚡️【TiAlN Coating for Extreme Heat Resistance & Extended Life】 The Titanium Aluminum Nitride (TiAlN) nano-coating withstands cutting temperatures up to 1472°F (800°C), drastically reducing heat buildup and friction. This results in a significantly longer tool life compared to standard titanium nitride or oxide coatings.
- 🎯 【Triple-Flute Design: Smother Finish, Faster Drilling, Pinpoint Accuracy】 The innovative three-flute geometry provides three key advantages over conventional two-flute bits: superior hole roundness and wall finish, approximately 40% improved chip ejection for cooler operation, and enhanced drilling accuracy with reduced bit walk. For optimal performance, recommended for standard depth of cut applications.
The Crosstar M35 Cobalt Drill Bit Set includes 21 pieces and is made for hardened metal and stainless steel. It also features a titanium aluminum nitride coating and a three-flute design, with a price of $43.99 and a 4.4 rating.
This set is one of the more specialized options in the lineup because it directly references hardened metal and stainless steel. The included range from 1/16″ to 1/2″ gives it a practical size spread for many drilling tasks.
If you want a set that is clearly aimed at tougher metal applications, this one deserves attention, especially with its stainless steel focus.
Pros
- Designed for hardened metal and stainless steel
- 21-piece set
- Wide size range
Cons
- Higher price
- 4.4 rating is strong but not the highest in the list
6. Best Metric Option: Metric M42 8% Cobalt Twist Drill Bits
- Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
- 3 Steps Design for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic.
- This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
The Metric M42 8% Cobalt Twist Drill Bits Set includes 19 pieces and is specifically described for stainless steel and hard metal. It covers sizes from 1mm to 10mm and is priced at $36.89 with a 4.4 rating.
This set is a good fit for users who prefer metric sizing, which can be easier to manage on certain projects. The M42 cobalt construction makes it suitable for harder materials and stainless steel applications.
If your work is metric-based and you need a set that aligns closely with stainless steel use, this is a straightforward choice.
Pros
- Designed for stainless steel and hard metal
- Metric size range
- 19 pieces
Cons
- 4.4 rating is good, not top tier
- May not suit users who prefer imperial sizes
7. Best Large Set: Cobalt Drill Bit Set, 29-Piece M35
- Various Sizes: 29 sets of drill bits include 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64“, 3/8", 25/64", 13/32", 27/64", 7/16, 29/64, 15/32", 31/64", 1/2", can meet more needs
- M35 Cobalt Drill Bit: The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc
- Quick and Efficient: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal
This 29-piece M35 cobalt high speed steel bit set is designed for hardened metals, stainless steel, cast iron, and wooden plastics. It comes with a metal index storage box and is priced at $57.98 with a 4.4 rating.
The larger piece count makes it appealing for buyers who want more size coverage in one package. Since it directly mentions stainless steel, it is a relevant choice for metal-focused drilling.
Its higher price is worth considering, but the wider selection may be helpful if you regularly need different bit sizes.
Pros
- 29 pieces
- Includes metal index storage box
- Lists stainless steel among intended materials
Cons
- More expensive than smaller sets
- 4.4 rating
8. Best Bosch Value: Bosch CO14 14-Piece Cobalt Metal Drill Bit Set
- MANUFACTURED FROM COBALT: For drilling in hard and abrasive materials
- NO-SKATE TIP: For clean and accurate starts
- THREE-FLAT SHANK: Promotes better grip on bits 3/16 in. and larger
The Bosch CO14 14 pc. Cobalt Metal Drill Bit Set is priced at $37.69 and has a 4.7 rating. It is another cobalt option in the Bosch lineup and is designed for metal drilling tasks.
Since cobalt is a strong match for hard metals, this set is a relevant option for stainless steel use. It also offers a trusted brand name and a focused set size for users who do not need a very large kit.
This is a solid alternative if you want a Bosch cobalt set but do not need the specific included case details of the CO14B package.
Pros
- Cobalt metal drill bit set
- Strong 4.7 rating
- Focused 14-piece selection
Cons
- Price is similar to other Bosch options
- Smaller set than larger multi-piece kits
9. Best ToughBox Set: Bosch Professional HSS Twist Drill Bit PointTeQ
- HSS Twist Drill Bit PointTeQ enables fast drilling in metal due to PointTeQ tip design
- Self-centering tip prevents wandering, making quick and easy drilling starts possible
- Increased drilling rate generates less heat and wear
The Bosch Professional 18-piece HSS Twist Drill Bit PointTeQ set is made for metal and comes in a ToughBox. It includes drill bits from 1-10 mm, costs $32.01, and has a 4.6 rating.
This is a practical set for general metal drilling and may appeal to users who want a compact storage solution. The PointTeQ naming suggests a focus on efficient starting, while the ToughBox helps keep everything organized.
It is a good option if you want a metal-drilling kit with a broader size range and convenient packaging.
Pros
- 18-piece set
- Includes ToughBox storage
- Useful metal-drilling focus
Cons
- Not specifically labeled for stainless steel
- HSS rather than cobalt emphasis
10. Best Budget DEWALT Set: DEWALT DW1341 Titanium Nitride Speed Tip Set
- Speed Tip Reduces Walking
- Ideal for drilling in metal, wood, and plastics
- No spin shanks
The DEWALT DW1341 is a 14-piece titanium nitride speed tip drill bit set priced at $20.98 and rated 4.8. It is a compact and well-rated choice for users looking for a versatile set.
Because it is titanium nitride coated, it offers a practical option for mixed material use. The speed tip design can be appealing if you want a bit set that starts cleanly and is easy to handle.
This is another strong value pick if you want a DEWALT set without moving into a higher-priced cobalt option.
Pros
- Excellent 4.8 rating
- Affordable price
- Titanium nitride coating
Cons
- Not a stainless steel-specific set
- Only 14 pieces
11. Best Rated DEWALT Option: DEWALT DW1354 Titanium Nitride Coated Set
- Connectable accessory storage system to optimize storage space of the drill bits for wood, metal and plastic
- Patented bit-bar design of the drill bits allows easy removal of bits and customizable placement
- Clear lid allows you to easily see contents at glance
The DEWALT DW1354 is a 14-piece titanium nitride coated drill bit set with a 4.8 rating and a price of $19.99. It is one of the strongest-rated lower-cost options in the lineup.
This set is intended as a general drilling solution and is suitable for wood, metal, and plastic according to its product information. That makes it useful for buyers who want a dependable everyday set.
If your project list includes multiple materials and you want a budget-friendly set with a strong customer rating, this one is worth a look.
Pros
- Very strong customer rating
- Low price
- Versatile for multiple materials
Cons
- Not specifically marketed for stainless steel
- 14-piece set only
12. Best Single Bit: Bosch TI2143IM 1/4 in. Impact Tough Drill Bit
- NO SKATE TIP: Accurate starts
- DESIGNED FOR HEAVY-GAUGE AND HIGH-CARBON STEEL
- LONG FLUTES FOR EFFECTIVE MATERIAL REMOVAL
The Bosch TI2143IM is a single 1/4-inch impact tough titanium nitride coated drill bit. It is priced at $7.72 and has a 4.6 rating, making it a simple add-on choice for specific drilling needs.
As a single bit, it is best for buyers who need one replacement or a specific size rather than a full set. The titanium nitride coating makes it a useful general metal-working option.
This product is most useful when you already know the size you need and want a straightforward bit with a solid rating.
Pros
- Affordable single-bit option
- 4.6 rating
- Titanium nitride coated
Cons
- Only one bit included
- Limited to 1/4 inch size
13. Best 1/4-Inch Pack: 1/4-Inch Cobalt Steel M35 Jobber Bits
- JOBBER LENGTH: 1/4-inch cutting diameter, 2-3/4-inch flute length, 4-inch overall length, 135 degree split point, 3-flat shank
- MADE FROM HIGH-SPEED STEEL AND 5% COBALT: improve much higher heat resistance because of cobalt steel's high red hardness, provide strong durable performance compared to typical hss drill bits
- CAN BE REPEATEDLY SHARPENED AS NEEDED: cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened without damaging the cutting edge allowing it to drill more than hss drill bits
This 12-pack of 1/4-inch cobalt steel M35 jobber length twist drill bits is made for hard metal and stainless steel. It is priced at $28.88 and has a 4.6 rating.
Because it explicitly mentions stainless steel, this is a focused choice for users who need a 1/4-inch size for harder materials. The pack of 12 gives added value if this is a common size in your work.
If you regularly drill with 1/4-inch bits and want a stainless steel-friendly option, this set fits the need well.
Pros
- Designed for hard metal and stainless steel
- 12-pack
- Strong 4.6 rating
Cons
- Only one size listed
- Less versatile than multi-size sets
14. Best Massive Set: Cobalt Drill Bits Set, 99-Piece M35
- Cobalt M35 Material: High cost, but hardness is up to 67, cut faster and has a long life, up to 12 times compared with the average HSS titanium coated bit, save time and improve efficiency
- Hardened Full Grinding Process: Increases wear resistance, sharp and durable, used for stainless steel, cast iron, zinc alloy, titanium, aluminum, hard metal, plastic and wood
- Packaging: Hard and thick plastic box, drills bagged for compartmentalized storage, reasonable design, well secured package
The 99-piece M35 cobalt drill bits set is designed for hardened metal and stainless steel. It covers sizes from 1/16″ to 3/8″ and includes a plastic index storage case. The set is priced at $64.99 with a 4.4 rating.
This is the largest set in the list and will appeal to buyers who want a wide variety of sizes in one package. The stainless steel listing makes it relevant for demanding metal drilling work.
Its size range and storage case make it a practical choice for users who value organization and broad coverage.
Pros
- Very large 99-piece set
- Designed for stainless steel and hardened metal
- Includes storage case
Cons
- Highest price in the list
- 4.4 rating
15. Best Step Drill Option: HSS Titanium Step Drill Bit Set
- HSS Titanium Coating: The step drill has excellent sharpness and durability due to its high speed steel material and titanium coating
- 118° Split Point Tip & Dual-flute Design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily
- 50 Sizes in 5 Pcs: The step drill bit kit includes 5 standard pieces with totally 50 sizes for versatility, enough for your DIY needs
The HSS Titanium Step Drill Bit Set includes 5 pieces and offers 50 sizes for metal work. It comes with an aluminum case, is priced at $21.99, and carries a 4.4 rating.
Step drill bits are often useful when you need multiple hole sizes from a smaller set of tools, and this product offers a broad size range in that format. The titanium coating and included case add to its practicality.
It is a good option for users who prefer step bits rather than standard twist bits and want an organized kit for metal drilling tasks.
Pros
- Offers 50 sizes
- Includes aluminum case
- Budget-friendly price
Cons
- Only 5 pieces
- Not specifically listed for stainless steel
Buying Guide
Material Type
For stainless steel, cobalt drill bits are often the most relevant choice in this list because several products are specifically made for hard metals or stainless steel. Titanium nitride-coated bits can also be useful, especially if you need something more versatile for metal, wood, and plastic.
Size Range
Think about how many sizes you actually need. Larger sets are helpful if you work on a variety of jobs, while smaller sets or single bits can be better if you only need specific sizes for occasional use.
Intended Use
Some products here are directly aimed at stainless steel and hardened metal, while others are more general-purpose. If stainless steel is your main priority, look closely at the product descriptions to find the most relevant match.
Storage and Organization
Many of the listed items include a case or storage box. This is worth considering if you want to keep your bits organized and easy to access, especially when buying larger sets.
Customer Ratings
Ratings can help you compare options quickly. In this list, several DEWALT and Bosch products have particularly strong ratings, which can be helpful when narrowing down the best fit.
Frequently Asked Questions
What is the best type of drill bit for stainless steel?
Cobalt drill bits are often the most relevant choice for stainless steel because several products in this list are specifically made for steel, hard metal, and stainless steel drilling.
Can titanium nitride-coated bits work on stainless steel?
Yes, some titanium nitride-coated bits can be used for metal work, but in this list, the most stainless steel-focused options are the cobalt sets and hard-metal sets.
Should I choose a large set or a small set?
It depends on how often you drill and what sizes you need. Large sets are better for flexibility, while smaller sets can be more affordable and easier to store.
Are Bosch and DEWALT both good brands for metal drilling?
Based on the products listed here, both Bosch and DEWALT offer highly rated options that are suitable for metal work, with several sets that are especially relevant for harder materials.
Is a step drill bit good for stainless steel?
A step drill bit can be useful for metal projects and for creating multiple hole sizes, but standard cobalt twist drill bits are more directly suited to stainless steel in this product list.
Conclusion
Choosing the Best Drill Bit For Stainless Steel comes down to matching the bit material, set size, and intended use to your project. If you want the most direct stainless steel option, the BOSCH CO14B stands out as a strong overall pick. For buyers looking for wider versatility and strong ratings, several DEWALT and Bosch alternatives are also worth considering.
No matter which option you choose, focusing on quality, size range, and a product designed for hard metal will help you get better results when drilling stainless steel.