| Customization: | Available |
|---|---|
| Customized: | Customized |
| Standard: | GB/T |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Adaptable to Multiple Materials
This M35 alloy drill set is specially engineered to handle a variety of tough materials-including stainless steel, alloy steel, and cast iron-making it highly versatile across industrial, construction, and repair applications.
Precision-Engineered for Stability
Each bit features finely ground cutting edges and balanced spiral flutes, ensuring smooth chip removal and accurate drilling with minimal vibration-ideal for frequent, high-precision tasks.
Heat-Treated for Extended Durability
Constructed from cobalt-enriched M35 high-speed steel and treated with advanced thermal processes, the bits achieve increased hardness and wear resistance for longer service life under high-temperature drilling conditions.
Ready for a Range of Tasks
Suitable for a wide variety of uses-including electrical installations, fabrication, general maintenance, and metal construction-this set offers efficient performance without frequent tool changes.
1)Stainless Steel
2)Mold Steel
3)Copper Alloy
4)Aluminum Alloy
5)Cast Iron
6)PVC
Sharp & Durable Cutting Edges
Manufactured from heat-treated M35 cobalt high-speed steel, these bits deliver fast, clean entry into hard metals like stainless steel, reducing resistance and wear for prolonged performance.
Stable Drilling with Ground Tip
Fully ground and precision-shaped tips ensure stable starts and accurate positioning-minimizing walking even under high-speed or punch-through conditions.
Efficient Chip Management
Engineered spiral flute geometry supports uninterrupted chip evacuation, reducing heat accumulation and preventing clogging during continuous or deep drilling.
Corrosion-Resistant Finish
Each bit features a polished surface that enhances appearance, resists rust, and extends tool longevity-ideal for industrial or high-humidity work environments.
Comfort-Oriented Design
Balanced and lightweight, the set is easy to handle over long shifts. Its ergonomic construction reduces fatigue and provides superior control across diverse metalworking tasks.
Available Sizes:
| Specification | Cutting Diameter | Overall length | Blade length |
| 3 | 33mm | 61mm | 3mm |
Exceptional Heat & Wear Resistance
Made from heat-treated M35 cobalt alloy steel, these drill bits retain cutting hardness and edge integrity even during prolonged high-speed, high-friction operations.
Ready for Multiple Materials
Perfect for drilling stainless steel, alloy steel, carbon steel, cast iron, and other hard materials-ideal for factories, workshops, and repair environments.
Practical for Diverse Users
Whether you're a professional technician or a DIY hobbyist, this drill bit set delivers stable, accurate, and long-lasting performance across general fabrication, mechanical work, construction, and more.
CNC Precision Grinding
Ensures consistent flute geometry and precise tip angles for smooth, stable drilling under high-speed, repetitive operations.
Vacuum Heat Treatment
Enhances surface hardness and core toughness, improving wear resistance and durability in high-load, high-temperature industrial settings.
Ultra-Fine Polishing
Reduces cutting friction and chip adhesion, improving heat dissipation and minimizing workpiece surface damage.
EAF + LF + VD + RS ESR Metallurgy
Produces high-purity M35 cobalt alloy steel with low inclusions and high toughness, suitable for demanding applications requiring thermal and structural reliability.
Quenching + Cryogenic Treatment + Tempering
Achieves hardness up to HRC 67 while preserving structural integrity and crack resistance-crucial for heavy-duty metal drilling.
RS ESR Edge Enhancement
Rapid solidification ESR technology refines carbide and cobalt distribution at the cutting edge, improving resistance to heat softening and wear-ideal for deep or high-speed drilling.
M35-Centric Configuration
Prioritizes M35 over M2 or M42 for its superior wear resistance in drilling stainless steel, hardened steel, and other tough metals.
Tailored Geometry & Coatings
Optional customization of flute length, helix angle, and PVD coatings (e.g., TiN, TiAlN) to match specific material or application needs.
High-Efficiency Chip Removal
Advanced flute geometry enables fast chip evacuation and reduced heat buildup-essential for dense or heat-sensitive metals.
Optimized Cutting Angles
Precisely matched tip and helix angles enhance cutting force and reduce edge wear for longer tool life.
Coating Compatibility
Supports TiAlN, TiCN, and other advanced coatings for extended tool performance in high-temperature or high-friction environments.
Q1: What materials can the M35 Alloy Twist Drill Set drill through?
A: This drill set is designed for excellent performance on a wide range of hard materials, including:
Stainless steel
Alloy steel
Cast iron
Carbon steel
Non-ferrous metals like aluminum and brass
Its cobalt-alloy composition and heat-treated hardness ensure reliable penetration and long service life.
Q2: What are the advantages of heat treatment in these drills?
A: The heat treatment process significantly enhances the tool's performance by:
Increasing surface hardness (up to HRC 67)
Improving structural toughness
Reducing internal stress through cryogenic treatment
These benefits allow for prolonged use under high-speed and high-heat drilling conditions.
Q3: Can this drill set be used in manual hand drills?
A: Yes. These bits are compatible with:
Corded and cordless hand drills
Drill presses
Industrial CNC machines
They are well-balanced for both manual and machine-driven applications.
Q4: Are coatings available for special drilling needs?
A: Yes. We offer optional coatings such as:
TiN (Titanium Nitride) - general wear resistance
TiAlN (Titanium Aluminum Nitride) - high-temperature drilling
TiCN (Titanium Carbonitride) - increased surface hardness
Uncoated versions are also available for lighter tasks or cost efficiency.
Q5: When should I replace the drill bit?
A: Signs that indicate it's time for replacement:
Dull or chipped cutting edges
Slower cutting speed or increased effort
Inconsistent hole size or finish
Excessive vibration or abnormal noise during use
Regular inspection under magnification is recommended.
Q6: Do you accept custom drill bit designs?
A: Yes, we provide custom engineering solutions, including:
Step drills or non-standard geometries
Internal coolant holes
Custom flute length, helix angle, or shank styles
Custom designs require technical drawings or detailed specifications.
){kind=link}