Best Step Bits for Steel of 2025

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 1 Feb 2025

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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

YOKOCUT Cobalt Step Drill Bit for Metal Cover #TOP 1
YOKOCUT Cobalt Step Drill Bit for Metal
ftb score rating icon 9.8
YOKOCUT 6PCS Step Drill Bits Set Cover #TOP 2
YOKOCUT 6PCS Step Drill Bits Set
ftb score rating icon 9.7
STROTON Metric M35 Cobalt Step Drill Bit for Stainless Steel and Hard Metal Cover #TOP 3
STROTON Metric M35 Cobalt Step Drill Bit for Stainless Steel and Hard Metal
ftb score rating icon 9.5

Top 10 Step Bits for Steel

YOKOCUT Cobalt Step Drill Bit for Metal

YOKOCUT
UK13043235
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.

What We Like
High-speed drilling capability
Long tool lifespan
Excellent heat and wear resistance
Versatile for multiple materials

YOKOCUT 6PCS Step Drill Bits Set

YOKOCUT
UK13000006
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.

What We Like
Durable titanium coating
Variety of sizes available
Automatic centre punch
Smooth cutting design
#TOP 3

STROTON Metric M35 Cobalt Step Drill Bit for Stainless Steel and Hard Metal

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

Features
Grinding The Cutting Edge Three Times,with The High HRC And Heat Resistance Of The Material,Desigh For Cutting Through Stainless Steel , Iron Plate, Aluminum,Ducts,Wood,PVC And Plastic.
Premium M35 Cobalt Steel ,66-69 HRC (Rockwell Hardness Scale) ,Usually Give The Best Heat,Wear And Chip Resistance And Long Tool Life.
[4-32mm] 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)
This Cobalt Step Drill Bit Is Typically Capable Of Running Two To Three 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.
#TOP 4

YOKOCUT 6-65 mm Step Drill HSS Spiral Grooved Step Bit for Metal Steel Plastic Wood

YOKOCUT
YOKOCUT-6-65mm-HSS-TiN-3F
YOKOCUT 6-65 mm Step Drill HSS Spiral Grooved Step Bit for Metal Steel Plastic Wood Cover
YOKOCUT 6-65 mm Step Drill HSS Spiral Grooved Step Bit for Metal Steel Plastic Wood, Large Titanium Step Drill Bit Cone Drill Bit Hole Cutter, 13 Steps

Features
YOKOCUT Step Drill Bits Are 100% Genuine HSS 4241. 100% Satisfaction Guarantee: Every YOKOCUT Product Includes 60days Money-Back & 24-Month Warranty And A Friendly Customer Service.
YOKOCUT 6-65 Mm Large Step Drill HSS Spiral Grooved Step Bit For Metal Steel Plastic Wood, Perfect Step Drill Bits Suitable For Drill Holes In Various Material: Within 7mm (Steel, Sheet Metal Iron Plate, Copper Plate, Aluminum Plate); Not Suitable For Hard And Brittle Materials Such As Stainless Steel, Glass, Tile Floors, Walls Etc.
HSS Combined With A Titanium Coating. More Capable And Durable.
HSS Titanium Step Drill Bit (6-65mm ) With 12mm 3-Flat Shaft Drives Are Suitable For All Kinds Of For Home DIY With Drill Press At 80 Recommended RPM To Gradually Gindrinding And Drilling Through Your Work Project!
Double Spiral Flute Design For Smoother Cutting. High Step Design Let You Feel The Stop And Never Drill Bigger In Mistake.
#TOP 5

12 Size Titanium Step Drill Bit for DIY

LSDZHK
LSDZHK-JGG1094
12 Size Titanium Step Drill Bit for DIY Cover
Large HSS Step Drill Bit, 12 Sizes Titanium High Speed Steel 6 to 60MM Drill Bit for Sheet Aluminium Metal Wood Hole Drilling, Big Multiple Hole Stepped Up Bit for DIY Lovers (1 PC Step Drill)

The LSDZHK Step Drill offers an impressive range of 12 hole sizes, allowing you to tackle various projects without the hassle of changing bits frequently. Its durable titanium coating enhances wear resistance, ensuring you achieve better and faster drilling performance. Designed for universal compatibility, this drill bit can effortlessly drill through materials such as acrylic, PVC, wood, aluminium, and iron sheets. Additionally, it is easy to use, requiring minimal shaking and eliminating the need for centre punching, making it suitable for both beginners and experienced DIY enthusiasts.

What We Like
Versatile with 12 hole sizes
Durable titanium coating
Fast drilling on various materials
Easy to use without centre punching

YOKOCUT HSS Titanium Step Drill Bit Set

YOKOCUT
UK13010004-UK13020004
YOKOCUT HSS Titanium Step Drill Bit Set Cover
Step Drill Bit HSS Titanium Step Drill Bit For Metal Multiple Hole Drilling Cone Drill Bit Stepped Up Bits For DIY Lovers (5-35MM Step Bit)

The YOKOCUT Step Drill Bit is crafted from 100% genuine HSS 4241, ensuring durability and reliability for your drilling tasks. Its titanium coating enhances its performance, making it more capable in various materials. You will find the two-flute design beneficial for smoother cutting, which allows for cleaner holes. Additionally, the high step design prevents accidental drilling to larger sizes, giving you precise control over your project.

What We Like
Durable HSS 4241 material
Titanium coating for enhanced performance
Smoother cutting with two-flute design
Prevents accidental oversizing
#TOP 7

Gunpla 3 Piece HSS Spiral Step Drill Bits Set, Titanium Coated Hex Shank Drilling Bit Kit for Wood, Stainless Steel

#030122
3 Piece
Gunpla 3 Piece HSS Spiral Step Drill Bits Set, Titanium Coated Hex Shank Drilling Bit Kit for Wood, Stainless Steel Cover
Gunpla 3 Piece HSS Spiral Step Drill Bits Set, Titanium Coated Hex Shank Drilling Bit Kit for Wood, Stainless Steel, Iron Plate, Aluminum, PVC Board 4mm to 32mm

Features
This Drill Bit Set Includes 3 Spiral Step Drill Bits Will Easily Provide Faster, Smoother Cutting.
Gunpla Spiral Core Drill Bit Are Made From High Speed Steel And Are Coated With Titanium With A Golden Color. These Steps Drill Bits Are Produced Extremely Durable For Convenience.
The Two-Flute Design Automatically Deburrs Holes As You Drill. Mark Hole Locations And Start Drill Bits And Screws, Preventing Wandering, Heat Treated Alloy Steel Punch With Sharp Precision Tip, Corrosion-Resistant Brass Body With Non-Slip Knurled Grip.
The Spiral Step Drills Set Ideally Round Holes In Steel, Brass, Plastic, Wood, Copper, Fibreglass, Pvc, Thin Metals And Aluminum. The Drills Are Heat Treated And Highly Polished With Titanium Coating To Reduce Friction And Heat.
Our High Quality Drill Bits Come With Hex Shank Will Give You A Wide Range Of Applications.
#TOP 8

SS SHOVAN 3PCS HSS Spiral Step Drill Set

SDB-4R
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.

What We Like
Efficient four-flute design
Quick and smooth drilling
Durable titanium coating
Versatile for multiple materials
#TOP 9

DIWUJI Spiral Grooved Step Drill Bit Set

DIWUJI Spiral Grooved Step Drill Bit Set Cover
Spiral Grooved Step Drill Bit Set, High Speed Steel Titanium Coated, 4mm to 12/20/32 mm (5/32" to 5/4") Hex Shank Metric, HSS Cut Tool Set for DIY Plastic Wood Metal Aluminum Copper

The DIWUJI Step Drill Bit Set features a two-flute spiral groove design, allowing for faster and smoother cutting. This means you can tackle your DIY projects with ease, making clean holes without the hassle of bit changes. Made from high-speed steel and titanium coated, these bits ensure easy cutting through materials like metal, wood, and plastic. The 1/4" hex shank fits securely in most drills, providing a stable connection that eliminates slippage as you work.

What We Like
Fast and smooth cutting
Versatile for many materials
Secure hex shank connection
Multiple hole sizes with one bit
#TOP 10

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

20506
Blue
Blue Spot Tools Step Drill HSS Steel Titanium Cone Bit Hole Metal Cutter Tool 4-42mm Cover
Blue Spot Tools Step Drill HSS Steel Titanium Cone Bit Hole Metal Cutter Tool 4-42mm

Features
Design & Durable
Manufactured From High Speed Steel For Increased Durability
Value For Money
Ideal For Cutting Precision Holes In Metal And Other Materials
Constructed Of High Speed Steel For Increased Durability
4-42mm In 2mm Increments
Buying Guide Image

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 276 step bit for steel products and shortlisted 10 quality products. We collected and analyzed 20,009 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 £17.38.

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 YOKOCUT, STROTON, LSDZHK, Gunpla, SS SHOVAN. The seller of top 1 product has received honest feedback from 238 consumers with an average rating of 4.8.

Written by
Jennifer Fraser Avatar

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.