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Best Step Bits for Steel of 2026

Jennifer Fraser Avatar
Jennifer Fraser

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Step bits for steel are innovative tools designed to drill holes in metal surfaces with ease. These bits are made from high-speed steel and have a spiral flute design that allows for clean and accurate drilling. The step design of the bits allows for multiple hole sizes to be created with a single bit, making them versatile and cost-effective. They are ideal for use in a variety of applications, including HVAC installation, electrical work, and metal fabrication. These step bits are a must-have for anyone who needs to drill holes in steel quickly and efficiently.

At a Glance: Our Top Picks

Top 9 Step Bits for Steel

SS SHOVAN 3PCS HSS Spiral Step Drill Set

SS SHOVAN 3PCS HSS Spiral Step Drill Set Cover

3PCS HSS Spiral Step Drill Bit Sets, SS SHOVAN 4-Flute Metal Drill Bits, 1/4" Hex Shank, Metric 4-32mm Cone Cutter, Hole Cutter for Sheet Metal, Plastic, Steel Plate

The SS SHOVAN Step Drill Bits are designed for efficient drilling with their upgraded four-flute spiral design, which helps prevent metal splatter and makes swarf removal easier. The 118° X type openings ensure quicker, smoother drilling, while the 1/4" hex shank eliminates slipping, making it ideal for various materials like plastic, metal, and wood. Crafted from durable titanium-coated HSS 4341 steel, these bits offer excellent wear and corrosion resistance, ensuring longevity. Whether you're expanding holes or doing precision work, this set is a must-have for DIY enthusiasts.

9.8
FTB Score

What We Like

  • Efficient four-flute design
  • Quick and smooth drilling
  • Durable titanium coating
  • Versatile for multiple materials

KASAFE M35 Cobalt Step Drill Bit 3-13mm

  • KASAFE
  • M35 Step Drill (3-13)
  • Φ3-13
KASAFE M35 Cobalt Step Drill Bit 3-13mm Cover

KASAFE M35 Cobalt HSS Step Drill Bit (3-13mm, 11-Step) for Stainless Steel, Cast Iron, Copper & Aluminum, 1/4" Hex Shank

The KASAFE M35 Step Bit is crafted from premium M35 cobalt high-speed steel, giving you twice the hardness of standard bits. This means you can drill through tough metals like stainless steel and cast iron, as well as softer metals such as copper and aluminium, with less wear and longer bit life. Its 118° split point tip self-centres for precise hole starts without needing a pilot hole, saving you time and effort. The spiral flute design efficiently removes metal shavings, preventing clogs and helping you achieve clean, burr-free holes quickly. With 11 step sizes from 3 to 13mm, you can easily drill or enlarge holes without changing bits, making your work faster and more convenient.

9.7
FTB Score

What We Like

  • Twice hardness of standard bits
  • Self-centring 118° split point
  • Efficient metal shavings removal
  • 11 sizes in one bit
  • Fits standard 1/4" hex shanks
#TOP 3

LEKOMESH Cobalt Step Drill Bit Set

  • LEKOMESH
  • LE2-OH-422402
  • 4-22mm
LEKOMESH Cobalt Step Drill Bit Set Cover

LEKOMESH Cobalt Step Drill Bit - 4-22mm Four Spiral Flute Step Drill Bit M35 with Impact Ready Unibit for Stainless Steel Metal Aluminium Copper Wood Plastic

The LEKOMESH Step Drill Bit is designed for precision and versatility. With a diameter range of 4-22mm, it provides ten different sizes to meet your various drilling needs. The 118° split point enhances accuracy, ensuring that you can drill through materials like stainless steel, aluminium, and wood with ease. Its industrial coating offers protection against thermal, abrasion, and corrosion, prolonging the bit's lifespan. For optimal performance, using cutting oil or water cooling is recommended, allowing you to enjoy an efficient drilling experience.

9.5
FTB Score

What We Like

  • Multiple size options available
  • Improved drilling accuracy
  • Durable industrial coating
  • Suitable for various materials
  • Recommended for cooling use

YOKOCUT Cobalt Step Drill Bit for Metal

  • YOKOCUT
  • 6939025604235
  • 4-32mm
YOKOCUT Cobalt Step Drill Bit for Metal Cover

YOKOCUT Cobalt Step Drill Bit for Stainless Steel and Hard Metal, High Speed Steel 6% Cobalt Step Bit with AlTiN Coating, Cone Drill Bit Multiple Hole Cutter (4-32mm, 15 Steps)

The YOKOCUT Cobalt Step Bit is designed for precision and efficiency, allowing you to drill holes ranging from 4mm to 32mm with 15 incremental steps. Made from premium HSS Cobalt M35 steel, it offers excellent heat and wear resistance, ensuring a longer lifespan for the tool. You will find that it runs three times faster than standard bits, making it ideal for tackling tough materials like stainless steel and sheet metal. Its specially ground cutting edge enhances performance, making drilling through various materials easier and more effective.

9.3
FTB Score

What We Like

  • High-speed drilling capability
  • Long tool lifespan
  • Excellent heat and wear resistance
  • Versatile for multiple materials
#TOP 5

STROTON M35 Cobalt Step Drill Bit Set

  • STROTON
  • Cobalt-15s-(4-32mm)
  • 4-32 millimeters
STROTON M35 Cobalt Step Drill Bit Set Cover

STROTON Metric M35 Cobalt Step Drill Bit for Stainless Steel and Hard Metal (4-32mm/15 steps)

The STROTON Cobalt Step Drill Bit offers exceptional durability, thanks to its premium M35 cobalt steel construction, which provides excellent heat, wear, and chip resistance. You will appreciate the three-times ground cutting edge, designed to effortlessly cut through various materials, including stainless steel and wood. This drill bit operates two to three times faster than standard options, making it an efficient choice. Although it comes at a higher price, its ability to produce more holes means lower cost per hole for you.

9.1
FTB Score

What We Like

  • High durability and tool life
  • Fast cutting through multiple materials
  • Cost-effective over time
  • Multiple size options available
#TOP 6

Blue Spot Tools HSS Step Drill Bit 4-42mm

Blue Spot Tools HSS Step Drill Bit 4-42mm Cover

Blue Spot Tools Step Drill HSS Steel Titanium Cone Bit Hole Metal Cutter Tool 4-42mm

The Blue Spot Tools Step Drill is expertly crafted from high-speed steel, ensuring exceptional durability for all your drilling needs. This tool is designed for precision, making it ideal for creating perfect holes in metal and various other materials. With its range of sizes from 4mm to 42mm in 2mm increments, you can easily find the right fit for your project. This step drill offers excellent value for money, providing both quality and performance without breaking the bank.

9.0
FTB Score

What We Like

  • High-speed steel construction
  • Ideal for precision holes
  • Range of sizes available
  • Excellent value for money
#TOP 7

toolant Four Spiral Flute Cobalt Step Drill Bit

toolant Four Spiral Flute Cobalt Step Drill Bit Cover

toolant Four Spiral Flute Cobalt Step Drill Bit(Pro Max), 4-22mm Impact Ready Four Spiral Flutes Unibit Step Bit, 1/4" Hex Shank Unibit for Metal, Stainless Steel, Aluminum, Wood, Plastic

The toolant Cobalt Step Drill Bit offers exceptional performance for a variety of materials, including stainless steel, metal sheets, wood, and plastic. With its M35 cobalt HSS construction, it ensures durability and precision in cutting. The aluminium titanium nitride coating enhances hardness, allowing for faster cutting speeds and efficiency. Additionally, its unique four spiral flute design guarantees a smoother cutting experience, making your tasks feel effortless, like cutting through butter.

8.9
FTB Score

What We Like

  • Durable cobalt construction
  • Faster cutting speeds
  • Smoother cutting experience
  • Versatile for multiple materials

YOKOCUT 6PCS Step Drill Bits Set

  • YOKOCUT
  • 6939025689119
  • 4-35 millimeters
YOKOCUT 6PCS Step Drill Bits Set Cover

Step Drill Bits Set 6PCS High Speed Steel Titanium Coated Cobalt Cone Step Drill Bit with Automatic Center Punch, for DIY Plastic Wood Metal Aluminum Iron

The YOKOCUT Step Drill Bits are crafted from high-speed steel with a titanium coating, ensuring reduced friction for smoother cutting. You can easily drill through materials like iron, aluminium, wood, and plastic, with a range of sizes from 4mm to 35mm to suit your needs. The automatic centre punch feature increases impact force, making it easier to mark precise points before drilling. Additionally, the innovative design includes a split point and double groove, which helps prevent waste and ensures a clean cut every time.

8.7
FTB Score

What We Like

  • Durable titanium coating
  • Variety of sizes available
  • Automatic centre punch
  • Smooth cutting design

Fongmore HSS Titanium Coated Step Drill Bit

  • Fongmore
  • Fongmore-Titanium-DRILL-BITS-4-32mm
  • 32 mm
Fongmore HSS Titanium Coated Step Drill Bit Cover

Fongmore 4-32mm HSS Titanium Coated Step Drill Bit High Speed Steel 1/4" Hex Shank Quick Change Cone Drill Bit Hole Cutter For Metal Plastic Wood

The Fongmore Step Drill Bit offers exceptional sharpness and durability, thanks to its high-speed steel construction and titanium coating. With its X-type 118° split point tip design, this bit accelerates cutting speed and reduces slippage, ensuring a more efficient drilling experience. The quick change 1/4-inch hex shank allows for effortless bit switches, making it compatible with impact-ready power tools. Its versatility makes it ideal for drilling through various materials, including plastic, aluminium, and iron, catering to all your DIY needs.

8.7
FTB Score

What We Like

  • High sharpness and durability
  • Fast cutting speed
  • Easy bit changes
  • Versatile for multiple materials

Frequently Asked Questions (FAQs)

1. Can you use a step drill bit on steel?

A step drill bit can be used to drill a range of different sized holes with a single bit. Since each bit size drill holes less than 1/4″ deep, a step bit is mainly used for drilling thin material such as sheet metal.

2. What is a steel step bit used for?

Step drill bits are used to drill metal up to 1/4 of an inch thick. Step drill bits are designed to enlarge a hole as the bit drills through the sheet metal. Each step on the bit is larger in diameter than the step before.

3. What bit to use on steel?

Clearly, the best drill bits for hardened metal or steel come with a cobalt blend. These cobalt drill bits use an alloy including 5%–8% cobalt. This cobalt makes up part of the steel blend, so the hardness of the bit doesn't wear off with a coating (like titanium bits).

Editor's Notes

During our step bit for steel research, we found 306 step bit for steel products and shortlisted 9 quality products. We collected and analyzed 16,220 customer reviews through our big data system to write the step bits for steel list. We found that most customers choose step bits for steel with an average price of £15.78.

The step bits for steel are available for purchase. We have researched hundreds of brands and picked the top brands of step bits for steel, including ss shovan, KASAFE, LEKOMESH, YOKOCUT, STROTON.

Written by

Jennifer Fraser Avatar

Jennifer Fraser

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.