| Customization: | Available |
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| Customized: | Customized |
| Standard: | GB/T |
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1. Multi-Material Versatility - Specifically designed to drill through stainless steel, alloy steel, cast iron, and other tough metals, this M35 cobalt drill set delivers exceptional adaptability across various industrial and construction materials.
2. Precision Performance - Engineered with sharp cutting edges and balanced flute geometry, each bit ensures smooth, accurate drilling with minimal vibration-ideal for demanding and repetitive drilling tasks.
3. Enhanced Durability through Heat Treatment - Manufactured from M35 high-speed steel with cobalt content, these bits undergo advanced thermal processing to boost hardness, resist wear, and extend service life under high-temperature operations.
4. Multi-Task Functionality - Suitable for electrical installation, metalworking, construction, and general-purpose drilling, this set minimizes the need for switching between tools, improving efficiency and productivity on the job.
1)Stainless Steel
2)Mold Steel
3)Copper Alloy
4)Aluminum Alloy
5)Cast Iron
6)PVC
1. Razor-Sharp Cutting Edge - Built with M35 high-speed steel and cobalt alloy, the drill bits offer fast and efficient penetration into stainless steel and other hard metals, with minimal resistance and reduced edge wear.
2. Anti-Slip Ground Tip - Fully ground tip design ensures precise positioning and stable entry, minimizing bit walking during high-speed or punchdown drilling tasks.
3. Optimized Chip Evacuation - Advanced spiral flute geometry supports smooth chip removal, reducing heat buildup and preventing material clogging in continuous-use scenarios.
4. Corrosion-Resistant Finish - The polished surface not only improves appearance but also enhances rust resistance and prolongs tool life, especially in high-humidity or industrial environments.
5. Ergonomic, Balanced Design - Lightweight construction and even weight distribution provide better handling, less operator fatigue, and greater control in extended drilling sessions across multiple applications.
Available Sizes:
| Specification | Cutting Diameter | Overall length | Blade length |
| 1 | 1mm | 34mm | 12mm |
Superior Wear Resistance & Heat Tolerance - Crafted from M35 cobalt high-speed steel, these drill bits are engineered to maintain hardness and sharpness under high-temperature, high-friction drilling conditions.
Versatile Drilling Performance - Ideal for stainless steel, hardened alloy, carbon steel, cast iron, and other difficult-to-machine materials, making it a go-to tool for various industrial and workshop applications.
Trusted Multi-Purpose Solution - Designed to meet the needs of both professionals and DIY users, this set delivers consistent, clean, and efficient results in metal fabrication, construction, maintenance, and installation tasks.
CNC Precision Grinding - Ensures consistently sharp flute geometry and tip angles, enabling smooth, accurate drilling even under repetitive, high-speed conditions.
Vacuum Heat Treatment - Enhances the surface hardness and internal toughness of the M35 cobalt drill bits, delivering long tool life in demanding applications.
Ultra-Fine Polishing - Minimizes friction and chip adhesion, improving heat dissipation and protecting workpiece surfaces during high-load drilling.
EAF + LF + VD + RS ESR Technology - Utilized to produce clean, high-toughness M35 cobalt steel, reducing internal impurities and brittleness for improved reliability under thermal and mechanical stress.
Quenching + Cryogenic Treatment + Tempering - Brings the material to optimal hardness levels (up to HRC 67) while preserving structural integrity and crack resistance, critical for metal drilling.
Rapid Solidification ESR - Refines carbide and cobalt particle distribution, strengthening the cutting edge against heat softening and wear during deep or high-speed drilling.
M35-Centric Configuration - While M2 and M42 options are available, this set emphasizes M35 for superior wear resistance, particularly in stainless steel and high-strength alloy applications.
Tailored Geometry & Coatings - Custom flute lengths, helix angles, and PVD coatings (TiN, TiAlN, etc.) can be applied for enhanced durability, chip evacuation, or material-specific performance.
Q1: What materials and coatings are available for your M35 drill bits?
Materials: Our primary offering includes M35 cobalt high-speed steel, known for its excellent wear resistance and heat tolerance. Other options such as M2, M42, and powder metallurgy HSS are also available for specific needs.
Coatings: We offer TiN (general purpose), TiAlN (for high-heat applications), and TiCN (for maximum surface hardness). Uncoated versions are available for cost-sensitive or custom-use cases.
Note: Using the right coating significantly extends tool life, especially when drilling materials like stainless steel or titanium alloys.
Q2: What causes premature wear or breakage in drill bits?
Operational factors: Excessive feed rate, insufficient cooling, or dry drilling are leading causes. Always apply proper cutting fluid to reduce heat and friction.
Selection errors: For hard materials such as stainless steel or heat-treated steel, M35 or coated drills are strongly recommended over general-purpose HSS.
Support: We provide technical guidance and consider replacements in cases of manufacturing-related failures (non-user damage).
Q3: How can I tell when it's time to replace the drill bit?
Signs of wear include:
Surface finish degradation
Hole diameter deviation greater than 0.1mm
Unusual noise or excessive vibration during drilling
Tip: Use a magnifier to inspect for edge rounding or micro-chipping during regular maintenance.
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 aluminum, copper, and other soft materials
10°-20° (Low Helix): Recommended for hardened steel or heat-treated metals to reduce chatter and enhance stability
Q5: Can I order non-standard or custom-designed drill bits?
Yes. We offer fully customized M35 drill bit solutions, including:
Step drills
Special point geometries
Internal coolant holes
Customized flute lengths, angles, or shank styles
(Custom designs require technical drawings or specifications.)
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