| Customization: | Available |
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| Customized: | Customized |
| Standard: | GB/T |
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Multi-Material Versatility - Specially crafted to handle stainless steel, alloy steel, cast iron, and other hard metals with ease, this set offers outstanding flexibility across industrial, construction, and maintenance tasks.
Precision Performance - Each drill bit features razor-sharp cutting edges and precision-balanced flutes, ensuring smooth, accurate penetration with low vibration-ideal for both high-volume production and critical manual applications.
Enhanced Durability through Heat Treatment - Made from premium M35 cobalt high-speed steel, the bits are thermally processed for improved hardness and resistance to wear, even under high-speed or high-temperature drilling conditions.
All-in-One Functionality - Perfect for electrical work, fabrication, construction, and general-purpose drilling, this set reduces tool changes and increases on-site efficiency and output.
Built for Long-Term Use - With enhanced edge retention and structural integrity, these drill bits are designed to withstand extended use in tough environments-making them a smart choice for both professionals and advanced DIYers.
1)Stainless Steel
2)Mold Steel
3)Copper Alloy
4)Aluminum Alloy
5)Cast Iron
6)PVC
Razor-Sharp Cutting Edge - Constructed from M35 cobalt-enriched high-speed steel, each bit delivers rapid, efficient drilling into stainless steel, hardened alloys, and other tough materials, while maintaining edge integrity and reducing wear.
Anti-Slip Ground Tip - The fully ground tip ensures precise centering and stable entry, helping prevent walking or misalignment, especially beneficial during high-speed or punchdown drilling.
Optimized Chip Evacuation - With its refined spiral flute design, the drill promotes smooth chip removal, minimizing heat buildup and preventing clogging in continuous or deep-hole operations.
Corrosion-Resistant Surface Finish - The polished coating not only gives a clean, professional look but also enhances resistance to rust and oxidation, extending tool life in humid or harsh working environments.
Ergonomic and Balanced for Control - Lightweight and structurally balanced, these bits reduce hand fatigue and offer superior control and handling, even during prolonged or high-repetition tasks-perfect for industrial, workshop, or on-site use.
Available Sizes:
| Specification | Cutting Diameter | Overall length | Blade length |
| 1.5 | 40mm | 18mm | 1.5mm |
Superior Wear Resistance & Heat Tolerance - Made from M35 cobalt high-speed steel, these drill bits are built to withstand intense heat and friction during drilling, maintaining their hardness and sharpness even in demanding conditions.
Versatile Drilling Performance - Engineered for stainless steel, hardened alloys, carbon steel, cast iron, and more, this set excels in applications where general-purpose bits fail, making it essential for both industrial use and precision workshop tasks.
Reliable Multi-Purpose Solution - Whether you're a professional or a skilled DIYer, this set delivers clean, accurate, and consistent results for metalworking, construction, repair, and equipment installation-reducing downtime and improving productivity.
CNC Precision Grinding - Ensures consistently sharp flute geometry and accurate tip angles, enabling smooth, stable drilling even in high-speed, high-repetition operations.
Vacuum Heat Treatment - Enhances surface hardness and internal structure of M35 cobalt steel, significantly increasing durability under intensive workloads.
Ultra-Fine Polishing - Reduces friction and chip adhesion, improves heat dissipation, and protects the workpiece surface during continuous or high-load drilling tasks.
EAF + LF + VD + RS ESR Technology - Applied to produce high-purity M35 steel with improved toughness and reduced brittleness, ensuring stable performance under both thermal and mechanical stress.
Quenching + Cryogenic Treatment + Tempering - Achieves optimal hardness up to HRC 67, while maintaining the flexibility needed to prevent cracking-critical for precision drilling in metals.
Rapid Solidification ESR - Refines the distribution of cobalt and carbide particles at the cutting edge, increasing resistance to heat softening and extending wear life in deep-hole or high-speed applications.
M35-Centric Configuration - This drill series focuses on M35 material for its excellent wear resistance and heat stability, especially effective on stainless steel, hardened alloy, and high-strength carbon steel.
Tailored Geometry & Coatings - Options include customized flute lengths, helix angles, and PVD coatings (TiN, TiAlN, TiCN) to match different materials and cutting conditions.
High-Efficiency Flute Design - Engineered for fast chip evacuation and low heat buildup, improving drilling performance in dense or heat-sensitive metals like stainless steel.
Optimized Cutting Angles - Precisely adjusted tip and helix angles deliver better penetration and reduce tool wear.
Application-Tailored Coatings - Supports advanced coatings (e.g., TiAlN for thermal resistance, TiCN for extended tool life), ensuring durability in tough industrial conditions.
Q1: What materials and coatings are available for your M35 drill bits?
Materials: Our flagship product line uses M35 cobalt high-speed steel, chosen for its outstanding wear resistance and heat tolerance. We also offer alternatives like M2, M42, and powder metallurgy HSS for specific machining needs.
Coatings: Available coatings include:
TiN - General-purpose durability
TiAlN - Excellent performance under high-heat conditions
TiCN - Maximum surface hardness for extreme applications
Uncoated versions are also available for cost-sensitive or specialized applications.
Note: The correct coating can extend tool life 2-3x, especially when drilling tough materials like stainless steel or titanium alloys.
Q2: What causes premature wear or breakage in drill bits?
Operational factors:
Excessive feed pressure
Dry drilling
Inadequate cooling
Recommendation: Always use appropriate cutting fluid to reduce heat and friction buildup.
Selection errors:
Drilling hard metals like stainless or heat-treated steel with general-purpose HSS bits
For such materials, M35 cobalt drills or coated variants are highly recommended.
Support policy: We provide technical support and offer replacements for manufacturing-related issues (non-user damage).
Q3: How can I tell when it's time to replace the drill bit?
Signs of wear include:
Rough or uneven surface finishes
Hole diameter variation >0.1mm
Unusual vibration, noise, or instability during use
Tip: Periodically inspect the bit under magnification to detect micro-chipping or edge dulling.
Q4: What helix angle is suitable for different materials?
30°-35° (Standard Helix): Best for carbon steel, alloy steel, and cast iron
40°-45° (High Helix): Ideal for soft metals like aluminum and copper
10°-20° (Low Helix): Recommended for hardened or heat-treated steels to reduce chatter and increase stability
Q5: Can I order non-standard or custom-designed drill bits?
Absolutely. We provide fully customized M35 drill solutions, including:
Step drills
Special cutting point geometries
Internal coolant holes
Custom flute lengths, helix angles, or shank designs
Note: Customizations require drawings or technical specifications to ensure precise manufacturing.
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