HSS Titanium Step Drill Bit Set – 3-12mm, 4-12mm, 4-20mm
HSS Titanium Step Drill Bit Set – 3-12mm, 4-12mm, 4-20mm
HSS Titanium-Coated Step Drill Bit Set – 3-12mm, 4-12mm & 4-20mm
Take your drilling game to the next level with this versatile HSS Titanium-Coated Step Drill Bit Set. Whether you're punching clean holes through sheet metal, aluminum, wood, PVC, or insulation boards, these precision-ground step bits deliver smooth, accurate results every time. The titanium coating adds extra hardness and extends the bit's working life — making this set a smart addition to any workshop or job site toolkit.
Why Choose These Step Drill Bits?
- Titanium Coated Surface: Reduces friction and heat build-up during cutting, extending bit longevity and improving cut quality.
- Spiral Groove Design: Superior chip removal, better guidance, and smoother cutting compared to standard straight-groove step drills.
- Hexagon Shank: Anti-slip hex shank fits securely into most standard drill chucks and quick-release drivers.
- Three Size Options: Choose from 3-12mm, 4-12mm, or 4-20mm to match your specific project needs.
- Multi-Material Use: Ideal for thin iron plates, aluminum, insulation boards, PVC, and wooden boards up to 4mm thick.
- Deburring & Chamfering: Doubles as a deburring and chamfering tool for clean, finished edges.
- CE Certified: Meets European safety and quality standards.
Technical Specifications
| Material | High-Speed Steel (HSS 4241) |
| Surface Finish | Titanium Coated |
| Head Type | Hexagon Shank |
| Available Sizes | 3-12mm / 4-12mm / 4-20mm |
| Suitable Workpiece Hardness | Below 25° (e.g. wood, thin iron plate, aluminum) |
| Certification | CE |
| Country of Origin | Made in China |
What's in the Box?
- 1 × HSS Titanium-Coated Step Drill Bit (size of your choice)
Great Products to Pair With This Set
Looking for more workshop essentials? Check out our Screw Extractor Drill Bit Set 5 & 6 Pc – Carbon Steel for tough fastener removal. Need to keep your workspace tidy? Our 10-Pack Silicone Cable Ties – Reusable Cord Organizers help manage power tool cords and cables with ease.
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What materials can these HSS titanium step drill bits cut through?
A: These step drill bits are designed for materials with a hardness below 25°, including thin iron plates, aluminum sheets, PVC boards, insulation boards, and wooden boards up to 4mm thick. They are not recommended for hardened steel or stainless steel.
Q: What is the advantage of the spiral groove design over a straight groove step drill?
A: The spiral groove design offers stronger chip removal, better guidance, and smoother cutting performance compared to traditional straight-groove step drills. This results in cleaner holes and less heat build-up during use.
Q: Do these step drill bits fit standard drill chucks?
A: Yes. The hexagon (hex) shank design fits the vast majority of standard drill chucks and quick-release drill drivers, providing a secure, anti-slip grip during operation.
Q: Which size step drill bit should I choose for my project?
A: Choose the 3-12mm bit for smaller hole sizes, the 4-12mm for a similar range with a slightly larger start diameter, and the 4-20mm if you need to drill larger holes up to 20mm in diameter. Select based on the maximum hole diameter your project requires.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.