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HSS Step Drill Bits
1.HSS Step Drill Bit is H.S.S material with a robust triangle shank.
2.The sizes are from 4mm to 32mm, and it is a titanium-coated finish, and with a laser marking number on the product.
3.It has to be sharp no burring, chips remove slot and wear resistance cutting design.
4.And with drilling diameter and laser marking on the product, it is easy to tell and can work for a longer time.
5.With self-centering and 118 degrees X type drilling design, it is easy in drilling, and not easy to slip.
6.With a general triangle shank, it is non-slip, durable, and long-time working. It is better clamped on the pistol drill to prevent slippage and shedding during the rotation.
7.It is Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron sheet, and many other types of sheet metal (excluding steel or any other harder metal
HSS Step Drill Bits - Professional High-Speed Steel Cutting Tools
Transform your drilling operations with Danyang Ebuy's precision-engineered HSS Step Drill Bits. Our high-speed steel cutting tools feature advanced stepped geometry that eliminates frequent tool changes while delivering multiple hole diameters in a single operation. Manufactured in our 77,000-square-meter facility by 319 skilled professionals, these bits address critical industry challenges including bit walking, material deformation, and productivity loss. With daily production capacity exceeding 150,000 pieces across our cutting tool range, we ensure reliable supply and consistent quality. Our products integrate drilling, chamfering, and deburring into one seamless process, maximizing efficiency for professional applications.
Our Factory
What Are HSS Step Drill Bits?
The products are specialized conical cutting tools manufactured from premium High-Speed Steel. They feature a unique staircase profile design that allows drilling multiple hole diameters without changing tools.
These innovative bits solve common drilling challenges:
· Eliminate time-consuming tool changes
· Prevent bit walking on smooth surfaces
· Reduce material deformation in thin sheets
· Automatically deburr hole edges
The self-centering split-point geometry ensures precise entry without center punching. This makes them ideal for professionals who demand efficiency and accuracy.
Our Certificate
Technical Specifications
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Parameter
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Specification
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Material
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High-Speed Steel (M2, M35 Cobalt, M42)
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Hardness
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63-68 HRC
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Point Angle
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118° or 135° split-point
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Flute Design
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Double/Triple spiral
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Coating Options
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TiN, TiAlN, Black Oxide
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Surface Hardness
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Up to 3000 HV (coated)
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Tolerance Standard
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DIN 1412
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Runout Precision
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<0.05mm
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Step Increments
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Various (1/8" to 1-3/8")
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Shank Type
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1/4" Hex or Round
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Key Applications
HVAC and Ductwork Installation
Your HVAC projects demand precision when creating access holes in galvanized steel ducts. Our HSS Step Drill Bits prevent the tearing and triangular holes common with twist drills. The stepped geometry maintains sheet metal integrity while allowing you to adjust hole sizes for different pipe gauges.
Electrical Panel Fabrication
When fabricating electrical enclosures, you need clean cable gland entries. Our M35 Cobalt variants excel with stainless steel and polycarbonate materials. They maintain edge integrity during low-RPM, high-torque operations essential for watertight seals.
Automotive Construction and Repair
Mechanics rely on our bits for chassis modifications and sensor installations. The cobalt-alloyed construction penetrates hardened steel without work-hardening the material. This prevents costly damage to expensive paintwork and structural components.
Production Process
Why Choose Danyang Ebuy HSS Step Drill Bits?
Superior Metallurgical Engineering
Our bits feature advanced High-Speed Steel substrates ranging from standard M2 alloy to premium M35 and M42 cobalt variants. This ensures optimal performance across different material hardness levels.
Enhanced Productivity
The double spiral flute design increases cutting edge length per rotation. This reduces axial operating force by up to 30% compared to straight flutes, extending tool life and improving efficiency.
Precision Manufacturing
We maintain strict tolerances following DIN 1412 standards. Our quality control system ensures concentricity that reduces runout to less than 0.05mm, guaranteeing precise hole diameters every time.
Advanced Surface Treatments
Optional coatings including Titanium Nitride (TiN) and Titanium Aluminum Nitride (TiAlN) increase surface hardness while reducing friction. This extends tool life significantly in demanding applications.
Quality Assurance
Our dedicated R&D department and stringent quality control system ensure every product meets professional standards. We conduct thorough inspections during production and pre-shipment quality checks to maintain consistency.
Each bit undergoes random sampling inspections before packaging. We use protective packaging to ensure your tools arrive in perfect condition, ready for immediate use.
Customization Options
We offer comprehensive customization services including:
· Custom step increments and diameters
· Specialized coatings for specific applications
· Private label branding on products and packaging
· Custom packaging solutions
Our group works closely with you to create arrangements that meet your correct necessities. Whether you require adjustments for particular materials or interesting applications, we have the ability to deliver.
Our Packaging
FAQ
Q: What materials can the items cut through?
A: Our bits exceed expectations with sheet metal, galvanized steel, stainless steel, aluminum, and plastic. M35 and M42 cobalt variations handle harder materials counting work-hardened stainless steel and high-tensile alloys.
Q: How do I select the right step penetrate bit size?
A: Consider your biggest required gap breadth and fabric thickness. Our specialized group can suggest the ideal bit setup based on your particular applications and materials.
Q: What boring speed ought to I use?
A: Begin with direct speeds (300-800 RPM) depending on fabric. Harder materials require lower speeds with consistent nourish weight. Continuously utilize cutting liquid for expanded apparatus life.
Q: Can these bits be resharpened?
A: Yes, our bits can be professionally resharpened different times when legitimately kept up. The high-speed steel development permits for rehashed honing whereas keeping up cutting performance.
Q: What's the contrast between M2, M35, and M42 steel grades?
A: M2 is standard HSS reasonable for common applications. M35 contains 5% cobalt for moved forward warm resistance and hardness. M42 with 8% cobalt offers greatest execution for the most requesting applications.
Q: Do you give specialized bolster for penetrating applications?
A: Completely. Our experienced specialized group gives direction on ideal cutting parameters, investigating, and application-specific proposals to maximize your efficiency.
Contact Us
Ready to enhance your drilling efficiency with HSS Step Drill Bits? Contact us at [email protected] for quotes, technical support, and customization options.
