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HSS Step Drill Bits for Sheet Metal
Straight Flute Design Provides Stable Drilling For Consistent, Burr-Free Holes In Sheet Metal
High-Speed Steel Construction (Optional M35 Cobalt) Offers Durability For General Metal Drilling
Precision Ground Cutting Edges Ensure Exact Hole Sizes With Minimal Material Deformation
Factory-direct OEM supply with 100 pcs low MOQ supports private label customization and flexible bulk purchasing for distributors and importers
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Customization & Packaging
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- High-Speed Steel (Optional M35 Cobalt) Body With Precision Ground Edges Creates Exact, Burr-Free Holes In Thin Sheet Metal, Plastic, And Wood Up To 5mm Thick
- Straight Flute Structure Ensures Stable Cutting Performance, Minimizing Vibration And Reducing Noise During Drilling Operations.
- Available With Bright, TiN, Black Oxide, Or Co-Coated Finishes To Reduce Friction And Improve Wear Resistance For Longer Tool Life
- Multiple Shank Options (Three-Flat, Round, Double R Shank) Are Compatible With Various Drill Types, Meeting Different Industrial And DIY Application Needs
Application Notes
Discover the versatile applications and material compatibility of our products
Drilling Aluminum Alloy
- •Step drill bits perfectly fit aluminum alloy sheets and profiles. Made of premium high-speed steel, they cut smoothly with low friction, avoid metal adhesion and burrs. One-pass drilling, enlarging and deburring deliver clean round holes for aluminum fabrication and installation work.
Drilling Stainless Steel
- •Step drill bits are specially designed for stainless steel sheets and thin plates. Cobalt steel structure provides high hardness and heat resistance. It prevents work hardening, realizes one-step hole drilling and reaming for precise, burr-free machining in metal engineering.
Real Factory & Application Videos
Watch real manufacturing and field applications to verify quality, performance, and supply capability
How Do Straight Flute Step Drill Bits Deliver Clean Holes for Sheet Metal Buyers?
This step drill bit replaces multiple drill bits to save your tool replacement time.
Why use several drills when one step bit does all sizes?
It completes drilling, hole enlarging and deburring in one single operation.
Our Production Process
From raw materials to finished products, every step is meticulously controlled to ensure superior quality and precision.
International Certifications
Our products meet the highest international standards and are certified by leading quality organizations worldwide.
RoHS Certificate
• Expiry Date:2027.10.05
ISO 9001:2015
• Expiry Date:2028.10.05
SGS Audit Report
• Expiry Date:2028.01.05
Product Spec Table
| SKU | Key Specs | Material / Coating | Packaging |
|---|---|---|---|
| 4-12mm | 22mm Shank Diameter / 66mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
| 4-12mm | 22mm Shank Diameter / 68mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
| 4-20mm | 22mm Shank Diameter / 71mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
| 4-22mm | 22mm Shank Diameter / 73mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
| 4-30mm | 22mm Shank Diameter / 95mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
| 4-32mm | 22mm Shank Diameter / 102mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
| 4-39mm | 25mm Shank Diameter / 97mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
| 5-35mm | 25mm Shank Diameter / 73mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
| 4-40mm | 25mm Shank Diameter / 103mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
| 10-45mm | 25mm Shank Diameter / 98mm Overall Length | HSS/M35/Custom Body Material/Custom Coated | Blister Pack/Plastic Box/Customization |
Frequently Asked Questions
Everything you need to know about our products, customization options, and ordering process.
How To Use Hss Step Drill Bit?
Align the tip with the target position, hold the drill steady, apply light pressure, and drill graded holes step by step smoothly.
What Is A Hss Step Drill Bit?
An HSS step drill bit is a multi-stage stepped cutting tool made of high-speed steel for drilling different hole sizes in one piece.
What Do You Use A Hss Drill Bit For?
HSS drill bits are widely used for drilling metal, aluminum, wood and plastic in daily repair and industrial processing work.
What Are Step Up Drill Bits Used For?
Step up drill bits create multiple diameter holes, ideal for sheet metal hole expanding, chamfering and layered drilling tasks.
What Are The Disadvantages Of Using Hss?
HSS tools wear faster on extra hard materials, and perform weaker than carbide bits under high-temperature heavy drilling workloads.
What Is The Difference Between A Step Drill Bit And A Normal Drill Bit?
A step drill bit makes multiple hole sizes at once, while a standard drill bit only drills one fixed diameter hole each time.
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Trusted by businesses worldwide
See what our global partners say about our premium drilling tools and cutting solutions.
"We rely on these HSS step drill bits for daily sheet metal fabrication. The stepped design creates clean, burr-free holes without pre-drilling, greatly improving our workshop processing efficiency."
Gary Bennett
Factory Production Manager
Poland
"This step drill bit series covers common hole sizes for sheet metal work. Consistent dimension accuracy and stable batch quality make it easy for us to supply local hardware retailers steadily."
Elena Popov
Hardware Import Wholesaler
Bulgaria
"Perfect for drilling thin sheet metal in ventilation and duct projects. The bit stays sharp longer and avoids warping thin plates, which saves lots of time for our on-site installation team."
Neil Harper
Hardware Contractor
United Kingdom
"We rely on these HSS step drill bits for daily sheet metal fabrication. The stepped design creates clean, burr-free holes without pre-drilling, greatly improving our workshop processing efficiency."
Gary Bennett
Factory Production Manager
Poland
"This step drill bit series covers common hole sizes for sheet metal work. Consistent dimension accuracy and stable batch quality make it easy for us to supply local hardware retailers steadily."
Elena Popov
Hardware Import Wholesaler
Bulgaria
"Perfect for drilling thin sheet metal in ventilation and duct projects. The bit stays sharp longer and avoids warping thin plates, which saves lots of time for our on-site installation team."
Neil Harper
Hardware Contractor
United Kingdom
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