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Best Drill Bit To Drill Steel

Tom Woodward

Senior reporter

★★★★★5.0

500+ views

Today

6 min read

Looking for the best drill bit to drill steel in March 2026? We reviewed 8 popular options from brands like ZELCAN, BOSCH, EFFICERE, M35, NordWolf, MACXCOIP, toolant, DEWALT and compared them on the things that matter most: build quality, comfort, ease of use, durability, and overall value. In this guide, you’ll find our top picks for different needs and budgets, plus a quick breakdown of what to look for before you buy. If you want a drill bit to drill steel that performs well and holds up over time, this shortlist will help you choose with confidence.

Our Top Picks

Best Overall

ZELCAN 10 Sizes Titanium Step Drill Bit, 1/4 to 1-3/8 Inches High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers Electrician

★★★★★★4.8

Material Grade:Titanium coated HSS

Coating Type:Titanium nitride

Diameter Range:1/4 to 1-3/8

Max RPM:Up to 3000 RPM

Shank Design:Tri-flat shank

Tip Geometry:Two-flute step

Titanium‑coated, tri‑flat shank step bits deliver fast chip evacuation and slip‑free drilling across ten sizes.

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Best Value

BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

★★★★★★4.7

Material Grade:M42 cobalt alloy

Coating Type:Uncoated steel

Diameter Range:Various sizes set

Max RPM:Up to 2500 RPM

Shank Design:Three-flat shank

Tip Geometry:Standard twist point

M42 cobalt bits with three‑flat shank resist heat, last longer, and excel drilling stainless steel and titanium.

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Best Premium

EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment

★★★★★★4.8

Material Grade:M2 cobalt HSS

Coating Type:Gold titanium & nitride

Diameter Range:9/16 to 1 inch

Max RPM:Up to 3500 RPM

Shank Design:Reduced shank

Tip Geometry:135 degree split

M2 cobalt drill set, gold‑titanium coating and 135° split point ensure rapid, centered cuts in metal.

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Detailed Reviews

What to Look For Drill Bit To Drill Steel

Material Grade

Determines hardness and heat resistance; higher-grade materials like cobalt or carbide cut steel faster, stay sharp longer, and reduce wear under high temperatures.

Coating Type

Coating reduces friction and heat, extending bit life; titanium nitride offers durability, while black oxide provides modest protection and better chip evacuation for steel drilling.

Diameter Range

Diameter range influences hole size and rigidity; larger bits cut deeper holes but require more torque, while smaller diameters offer precision and easier control on steel.

Max RPM

Maximum RPM indicates safe operating speed; exceeding this can cause overheating, reducing lifespan, so match the bit’s RPM rating with your drill’s output.

Shank Design

Shank design ensures secure chuck grip and vibration reduction; tri‑flatted or SDS shanks prevent slipping, improving accuracy when drilling tough steel.

Tip Geometry

Tip geometry, such as a 135° split‑point, reduces walking and provides clean entry; sharper angles cut steel efficiently with less thrust force.

by ZELCAN

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.8 / 5.0

ZELCAN 10 Sizes Titanium Step Drill Bit, 1/4 to 1-3/8 Inches High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers Electrician

BEST OVERALL

The ZELCAN step set delivers reliable drilling through a range of sheet metal thicknesses. Titanium coating keeps the bits cool and resistant to rust, while the tri‑flat shank locks securely in the chuck. Two‑flute geometry clears chips quickly, reducing bind. Ideal for DIY projects that require multiple hole sizes without changing bits. It also simplifies tool organization and reduces downtime.

Key Specifications

Material Grade

✓Titanium coated HSS

Coating Type

✓Titanium nitride

Diameter Range

✓1/4 to 1-3/8

Max RPM

✓Up to 3000 RPM

Shank Design

✓Tri-flat shank

Tip Geometry

✓Two-flute step

Reasons to Buy

✓Versatile size range
✓No slip shank
✓Fast chip evacuation
✓Heat resistant coating

Reasons Not to Buy

✗Limited to thin metal
✗Step design not for deep holes

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by BOSCH

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.7 / 5.0

BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

BEST VALUE

BOSCH CO14B provides a robust collection of M42 cobalt bits that excel in demanding metal drilling tasks. The three‑flat shank ensures a tight grip in the chuck, while the plain steel surface tolerates extreme temperatures without losing hardness. Users appreciate the long lifespan and reliable performance on stainless steel, cast iron, and titanium alloys for professional and hobbyist use today.

Key Specifications

Material Grade

✓M42 cobalt alloy

Coating Type

✓Uncoated steel

Diameter Range

✓Various sizes set

Max RPM

✓Up to 2500 RPM

Shank Design

✓Three-flat shank

Tip Geometry

✓Standard twist point

Reasons to Buy

✓High heat resistance
✓Extended tool life
✓Excellent for stainless steel
✓Comes with storage case

Reasons Not to Buy

✗Higher cost per set
✗No titanium coating

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by EFFICERE

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.8 / 5.0

EFFICERE 8-Piece Premium 1/2” Reduced Shank Silver and Deming Large Drill Bit Set in Aluminum Carry Case, M2 High Speed Steel, 135-Degree Split Point | SAE Inch Size 9/16” - 1” by 1/16th Increment

BEST PREMIUM

The EFFICERE eight‑piece set combines M2 cobalt steel with a premium gold titanium and nitride coating for superior durability. The reduced shank fits most drills, and the 135 degree split tip starts holes accurately without walking. Deep groove flutes expel chips efficiently, allowing higher feed rates on steel, aluminum, and cast iron. Ideal for professionals seeking consistent performance every job.

Key Specifications

Material Grade

✓M2 cobalt HSS

Coating Type

✓Gold titanium & nitride

Diameter Range

✓9/16 to 1 inch

Max RPM

✓Up to 3500 RPM

Shank Design

✓Reduced shank

Tip Geometry

✓135 degree split

Reasons to Buy

✓Fast cutting speed
✓Self‑centering tip
✓Excellent chip evacuation
✓Durable dual coating

Reasons Not to Buy

✗Limited to larger diameters
✗Higher price point

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M35 Cobalt Drill Bit Set 20PCS(1/16"-1/2") High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal with Index Storage Case

by M35

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.7 / 5.0

M35 Cobalt Drill Bit Set 20PCS(1/16"-1/2") High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal with Index Storage Case

BEST RUNNER UP

The M35 cobalt set offers a practical range of small‑diameter bits for drilling hardened metals. Each piece features a 135 degree split point that reduces walking and improves centering, while the three‑flat shank provides a secure hold. The titanium surface adds modest wear resistance, and the included case keeps tools organized for frequent use on steel and alloy components today.

Key Specifications

Material Grade

✓M35 cobalt steel

Coating Type

✓Titanium surface

Diameter Range

✓1/16 to 1/2

Max RPM

✓Up to 3000 RPM

Shank Design

✓Three-flat shank

Tip Geometry

✓135 degree split

Reasons to Buy

✓Hard metal cutting
✓Precise tip angle
✓Compact storage case
✓Good value pack

Reasons Not to Buy

✗No premium coating
✗Limited to small sizes

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NordWolf 5-Piece M35 Cobalt Stubby Drill Bit Set for Stainless Steel & Hard Metals, with 1/4" Hex Shank for Quick Chucks & Impact Drivers, SAE Sizes 3/32"-1/8"-3/16"-1/4"-5/16" in Storage Box

by NordWolf

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.3 / 5.0

NordWolf 5-Piece M35 Cobalt Stubby Drill Bit Set for Stainless Steel & Hard Metals, with 1/4" Hex Shank for Quick Chucks & Impact Drivers, SAE Sizes 3/32"-1/8"-3/16"-1/4"-5/16" in Storage Box

BEST BUDGET

The NordWolf stubby set delivers solid performance on stainless steel and hardened alloys. Its M35 cobalt construction resists wear while the compact length reaches tight spots. The 135° split point starts on target, reducing walk. Hex shank fits quick‑change chucks, and the storage case keeps bits organized. Ideal for demanding workshop tasks providing reliable drilling speed and consistent hole quality.

Key Specifications

Material Grade

✓M35 Cobalt Steel

Coating Type

✓Standard Uncoated

Diameter Range

✓3/32" to 5/16"

Max RPM

✓Up to 3000 RPM

Shank Design

✓1/4" Hex Shank

Tip Geometry

✓135° Split Point

Reasons to Buy

✓Compact stubby length
✓Durable M35 steel
✓Self‑centering tip
✓Hex shank quick‑change

Reasons Not to Buy

✗Limited length for deep holes
✗No coating for heat

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MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16"-1/4"

by MACXCOIP

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.4 / 5.0

MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16"-1/4"

BEST FOR PROFESSIONALS

The MACXCOIP 13‑piece M35 set offers versatile sizing for both tiny and larger holes in metal and non‑metal materials. Precision ground cobalt tips maintain sharpness, while the 135° split point prevents wandering. Standard shank fits most drills, and the indexed case streamlines organization. A well‑rounded kit for hobbyists and small‑shop projects delivering smooth cuts, reduced heat, and long‑term durability every.

Key Specifications

Material Grade

✓M35 Cobalt Steel

Coating Type

✓Standard Uncoated

Diameter Range

✓1/16" to 1/4"

Max RPM

✓Up to 3000 RPM

Shank Design

✓Standard Straight Shank

Tip Geometry

✓135° Split Point

Reasons to Buy

✓Wide size variety
✓Sharp cobalt tips
✓Fast chip evacuation
✓Indexed storage case

Reasons Not to Buy

✗Shorter overall length
✗No coating

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toolant Cobalt Drill Bit Set for Metal and Steel (Pro), Titanium Aluminum Nitride Coated (TiAlN) with Bullet Point Tip, for Hardened Metal, Stainless Steel, 21pcs 1/16"-1/2"

by toolant

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.5 / 5.0

toolant Cobalt Drill Bit Set for Metal and Steel (Pro), Titanium Aluminum Nitride Coated (TiAlN) with Bullet Point Tip, for Hardened Metal, Stainless Steel, 21pcs 1/16"-1/2"

BEST FOR BEGINNERS

Toolant Pro 21‑piece cobalt set combines TiAlN coating with bullet‑point geometry for aggressive metal drilling. The hardened coating reaches 89 HRC, extending tool life, while the 135° split tip centers precisely. Hex and standard shanks accommodate various chucks, and the extensive size range covers light to heavy‑duty tasks. Excellent choice for serious metalworkers seeking speed and durability in everyday projects today.

Key Specifications

Material Grade

✓M35 Cobalt Steel

Coating Type

✓TiAlN Coating

Diameter Range

✓1/16" to 1/2"

Max RPM

✓Up to 2500 RPM

Shank Design

✓Hex & Standard Shank

Tip Geometry

✓Bullet Point Tip

Reasons to Buy

✓TiAlN heat resistance
✓Bullet point aggression
✓Extended size range
✓Hex shank versatility

Reasons Not to Buy

✗Higher price point
✗Bulky case

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DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)

by DEWALT

X Score

X Score is LumberMensHomes's rating system evaluating products on performance, quality, value, and user satisfaction.

★★★★★

4.3 / 5.0

DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)

BEST PREMIUM PICK

DEWALT DWA1184 14‑piece set features 3‑flats shank HSS bits that handle plastic, wood, and steel with confidence. The 135° split point minimizes walking, and the tapered web adds strength for high‑speed operation. Bits are sized for common tasks, and the case keeps them tidy. Reliable, versatile choice for general‑purpose drilling in a busy workshop offering consistent performance and user satisfaction.

Key Specifications

Material Grade

✓High Speed Steel

Coating Type

✓Standard Uncoated

Diameter Range

✓3/32" to 1/4"

Max RPM

✓Up to 3500 RPM

Shank Design

✓3-Flats Shank

Tip Geometry

✓135° Split Point

Reasons to Buy

✓3‑flats shank grip
✓Robust HSS construction
✓Split point accuracy
✓Convenient carrying case

Reasons Not to Buy

✗Not ideal for hard steel
✗Limited size range

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Buying Guide

Key Features to Consider

When drilling steel, choose bits made from high‑speed steel (HSS) with cobalt alloy (M35 or M42) for superior heat resistance. A split‑point tip reduces walking and improves start accuracy, while a steep helix angle efficiently evacuates chips. Look for a straight shank or a robust SDS‑plus design that fits your chuck. Coatings such as titanium nitride extend life, but the core material remains the critical factor.

Budget Recommendations

For occasional DIY work, a basic HSS set priced under $15 will handle mild steel but may wear quickly on harder alloys. Mid‑range options between $15 and $40 often include cobalt‑enhanced bits with titanium coating, offering a good balance of durability and cost. Professional users should consider premium cobalt or carbide sets above $40, which maintain sharpness and dimensional tolerance even under high‑speed drilling.

Common Pitfalls to Avoid

Never run a steel‑drilling bit at excessive RPM; high speeds generate heat that dulls the tip. Skipping cutting fluid or lubrication will accelerate wear and cause chip binding. Using a plain HSS bit on hardened steel or relying on a worn tip leads to breakage. Finally, mismatching shank size to the chuck can create wobble and poor hole quality.

How We Test Best Drill Bit To Drill Steel

Our team has spent years researching and evaluating drill bit to drill steel across dozens of products available on the market today. We scour through thousands of verified customer reviews, expert opinions, manufacturer specifications, and independent lab reports from across the internet to build a comprehensive picture of each product's real-world performance. Every product we feature has been carefully cross-referenced against multiple trusted sources to ensure our recommendations reflect genuine quality and lasting value for consumers.

Our rating system is built on years of hands-on experience with drill bit to drill steel and closely related products. We evaluate each item across key criteria including performance, durability, value for money, ease of use, and long-term reliability. Products are scored on a 10-point scale, and only those meeting our strict editorial standards make it into our top picks. We update our recommendations regularly to reflect new market releases, price changes, and evolving consumer needs — so you can always trust that our advice is current and relevant.

Who Should Buy

Metal fabricators

They regularly need to create precise holes in steel components for welding and assembly.

Automotive mechanics

Drilling steel is essential for mounting brackets, modifying exhaust systems, and repairing chassis.

DIY home renovators

When upgrading fixtures or installing steel handrails, a reliable steel‑drill bit saves time and prevents tool damage.

Jewelry makers

Creating fine openings in stainless steel or titanium requires high‑quality bits to maintain clean edges and design integrity.

Frequently Asked Questions

What type of drill bit is best for drilling through steel?

Cobalt alloy drill bits (typically M35 or M42) are considered the best choice for drilling steel because they retain hardness at high temperatures, resist wear, and can handle the heat generated by cutting tougher metal.

Can titanium‑coated bits be used on steel, and are they a good alternative?

Titanium‑nitride (TiN) or titanium‑aluminum‑nitride (TiAlN) coated bits work well on mild to medium‑hardness steel for occasional use. The coating reduces friction, but the underlying steel core can dull faster than cobalt bits, so they’re best for light‑duty or hobby projects.

What drilling speed (RPM) should I use when drilling steel?

Use a low to medium speed: roughly 500–1,500 RPM for bits up to 1/4" (6 mm) in diameter, and 200–500 RPM for larger diameters. Slower speeds keep the bit cooler and prolong its life.

Is cutting fluid or lubricant necessary when drilling steel?

Yes. Applying a water‑soluble cutting oil, mineral oil, or a dedicated metal‑drilling lubricant reduces friction, lowers temperature, and helps flush chips away, resulting in smoother holes and longer‑lasting bits.

How can I prevent a drill bit from breaking or becoming dull when drilling steel?

Start with a small pilot hole, keep the drill perpendicular to the workpiece, use the correct low speed, apply steady pressure (don’t force the bit), use proper lubrication, and periodically withdraw the bit to clear chips. Inspect the bit for wear and replace it when the cutting edges become rounded or chipped.