| Customization: | Available |
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| Customized: | Customized |
| Standard: | GB/T |
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This high-speed steel (HSS) step drill bit is expertly engineered for universal use across a variety of materials. It delivers precise, burr-free drilling in metal sheets such as aluminum, brass, and mild steel, as well as in plastic materials like PVC, ABS, and acrylic-making it an essential tool for workshops, construction, and fabrication tasks.
The bit features a stepped profile that enables drilling multiple hole sizes using a single tool. Each step is CNC-machined to ensure clean transitions and maintain diameter accuracy. Built-in deburring functionality at every step produces smooth, finished edges-eliminating the need for secondary finishing or cleanup.
Manufactured from premium high-speed steel and treated with advanced heat hardening, this drill bit offers superior thermal stability, wear resistance, and edge retention. It stays sharp even under high-RPM, high-heat conditions commonly encountered in metalworking and plastic processing.
Trusted by professionals and DIY users alike, this universal step drill bit is ideal for:
Electrical box and panel work
HVAC duct and enclosure modifications
Automotive body repairs
Plastic casing fabrication
Its multi-material versatility makes it an indispensable tool in both industrial and home workshop environments.
Razor-Sharp Cutting Edge for All Materials
Crafted from premium high-speed steel (HSS), this step drill bit delivers clean and efficient drilling through a wide variety of materials-including stainless steel, aluminum, brass, PVC, acrylic, and more. Its precision-ground cutting edges ensure low cutting resistance and minimal burrs, even on softer plastics or tougher metals.
Self-Centering Split Point for Precision Starts
The anti-slip split point tip allows for quick, accurate starting without the need for a center punch. It ensures walk-free performance on both flat and curved surfaces, whether you're drilling metal electrical enclosures or plastic panels.
Optimized Spiral Flutes for Chip Clearance
Engineered with a spiral flute design between each step, the bit provides superior chip ejection. It minimizes heat buildup, reduces clogging, and allows for smoother, cleaner drilling-especially important when switching between plastic and metal substrates.
Corrosion-Resistant Finish for Longer Tool Life
Featuring a polished or coated surface (e.g., titanium coating if specified), this step bit resists corrosion from moisture, lubricants, and metal shavings. Its durability makes it well-suited for use in humid workshops, industrial sites, or outdoor installation tasks.
Versatile Multi-Step Design for Flexible Drilling
With clearly marked step diameters laser-etched into the bit, users can drill multiple hole sizes with a single tool. The multi-stage configuration reduces the need for frequent bit changes, making it ideal for electricians, HVAC technicians, metal fabricators, and DIYers working with various materials.
1. Superior Heat & Wear Resistance Across Materials
Crafted from high-grade high-speed steel (HSS), this step drill bit offers excellent durability and heat resistance, making it suitable for both metal and plastic drilling tasks. It retains sharpness through repeated use on challenging materials like stainless steel, aluminum, brass, PVC, and acrylic-ensuring consistent performance in various environments.
2. Multi-Diameter Drilling with Clean, Burr-Free Finishes
The stepped design allows you to drill a range of hole sizes using just one bit, minimizing tool changes and improving work efficiency. Each step is precision-machined to ensure smooth transitions and clean, burr-free holes on both metallic and non-metallic surfaces-reducing the need for additional deburring or surface finishing.
3. Universal Use for Multiple Industries and Applications
This versatile bit is a go-to tool for electricians, HVAC technicians, metal fabricators, panel builders, and DIY enthusiasts alike. It's ideal for drilling metal junction boxes, plastic housings, control panels, conduit fittings, and more-offering professional-grade results across multiple material types and applications.
Advanced Manufacturing for Maximum Versatility
1. CNC Precision Grinding for Accuracy Across Materials
Our universal step drill bits are precisely CNC-ground to ensure consistent step heights, centered tips, and razor-sharp cutting edges. This guarantees clean and accurate drilling through both metals and plastics, minimizing vibration and ensuring reliable performance in variable-speed applications.
2. Vacuum Heat Treatment for Longevity
Each drill bit undergoes advanced vacuum heat treatment, enhancing surface hardness and core durability. This thermal process ensures resistance to wear, deformation, and heat fatigue when used on stainless steel, aluminum, PVC, and ABS-extending tool life across diverse material types.
3. Polished Finish for Clean, Low-Friction Drilling
The ultra-fine polished flute reduces chip adhesion and heat buildup, resulting in smooth chip evacuation and a cooler cutting surface. This is particularly beneficial when drilling soft metals or plastics, where surface damage and clogging are common issues.
1. Ultra-Pure HSS with Advanced Alloying
Produced via Electric Arc Furnace (EAF), Ladle Refining (LF), Vacuum Degassing (VD), and Electro-Slag Remelting (ESR), our high-speed steel features exceptional purity and uniform microstructure. This results in higher wear resistance and toughness-ideal for both metallic and polymer-based substrates.
2. Cryo-Thermal Hardening up to HRC 67
Through cryogenic treatment and controlled tempering, our step drill bits achieve an optimal hardness-to-ductility ratio, resisting edge chipping while maintaining flexibility. This balance is vital when drilling composite panels, reinforced plastics, or multi-layered metal sheets.
3. RS ESR Edge Technology for Long-Lasting Sharpness
With Rapid Solidification ESR, edge performance is further enhanced by fine, uniformly distributed carbides and cobalt. This ensures edge retention under high-pressure and high-heat conditions, making the bit suitable for continuous industrial use.
1. M35 High-Speed Steel Core
We prioritize M35 HSS for its ideal combination of hardness and toughness. Its performance in both metal and plastic applications makes it a superior base material for truly universal step drill bits. M2 and M42 variants are also available upon request.
2. Custom Geometry & Coatings
Adapt your step drill for specific tasks with optional flute geometries, helix angles, and step configurations. We also offer PVD coatings such as:
TiN: for general-purpose drilling
TiAlN: for high-speed, high-temperature applications
TiCN: for extended life under abrasive conditions
1. Multi-Step Flute Efficiency
Precisely engineered step flutes enable smooth chip evacuation in plastics and metals alike. This reduces clogging and overheating when drilling thermoplastics, while maintaining consistent hole sizing in thin sheet metals.
2. Smart Cutting Angles
Cutting and transition angles are tuned to minimize axial load and material distortion. Whether you're working on soft aluminum, rigid PVC, or layered steel panels, this bit drills clean, round holes with minimal burring or cracking.
3. Engineered for Professionals and DIY Users
Whether you're an HVAC technician, electrician, panel builder, or workshop operator, this universal step drill bit meets your needs with professional-grade performance and multi-material compatibility.
Q1: What makes this universal step drill bit different from regular drill bits?
A: Unlike standard twist drill bits, this universal step drill bit is crafted from high-speed steel (HSS) and features a stepped, multi-diameter design. It allows users to drill multiple hole sizes with a single tool-ideal for sheet metals and plastics. The HSS material ensures excellent heat resistance, extended sharpness, and durability, while the step geometry delivers clean, burr-free holes without the need for pilot holes or bit changes.
Q2: What materials can this step drill bit handle?
A: This step drill bit is engineered for versatility. It is suitable for a wide range of materials including:
Metals: Aluminum, brass, copper, mild steel, stainless steel (thin sheets)
Plastics: PVC, acrylic, ABS, polycarbonate
Composites: Laminates, thin fiberboards
This makes it ideal for use in electrical, HVAC, automotive, construction, and general fabrication industries.
Q3: Are different step sizes and configurations available?
A: Yes. We offer various step configurations, typically covering hole diameters from 4mm to 40mm.
You can also request custom specifications such as:
Non-standard step increments
Shank types: round, hex, tri-flat
Coatings: TiN, TiAlN, TiCN for different working conditions
OEM/ODM services are available to meet specific industrial requirements.
Q4: Can this step drill bit be used with handheld drills or high-speed tools?
A: Absolutely. This drill bit is compatible with cordless drills, drill presses, and other rotary tools. Thanks to its CNC-machined HSS construction and optimized flute design, it performs exceptionally well under high-speed conditions, maintaining sharpness and precision even during repetitive drilling in tough materials.
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