| Customization: | Available |
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| Customized: | Customized |
| Standard: | GB/T |
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Optimized for Hard Metals
Specially developed for industrial-grade drilling in stainless steel, alloy steel, cast iron, and other tough materials. M35-grade construction ensures consistent performance in heavy-duty applications.
Precision Cutting with Reduced Vibration
Designed with sharp cutting edges and balanced spiral flutes, these bits deliver smooth, accurate drilling with low vibration-ideal for repetitive or high-precision industrial processes.
Durability Enhanced by Thermal Processing
Each drill bit is made from M35 cobalt HSS and undergoes advanced heat treatment, providing superior hardness, wear resistance, and extended lifespan even in high-temperature operations.
Industrial Flexibility Across Applications
Suitable for metal fabrication, machinery installation, electrical work, and general-purpose drilling-this set helps reduce tool changes and streamlines industrial workflows.
1)Stainless Steel
2)Mold Steel
3)Copper Alloy
4)Aluminum Alloy
5)Cast Iron
6)PVC
High-Efficiency Cutting Edge
Crafted from M35 cobalt alloy high-speed steel, these drill bits penetrate hard metals like stainless steel with ease, offering fast cutting speed, low resistance, and longer edge retention.
Precision-Ground Tip for Stability
The fully ground tip ensures accurate starts and firm positioning, reducing the risk of skidding or bit walking-especially under high-speed or industrial punchdown conditions.
Industrial-Grade Chip Evacuation
Designed with advanced spiral flute geometry, enabling continuous chip clearance, reduced friction, and cooler operation during long drilling cycles in production environments.
Polished Anti-Corrosion Finish
The smooth surface finish resists oxidation and surface rust, supporting extended tool life in high-humidity factories, workshops, or metalworking sites.
Ergonomic, Balanced Build for Long Use
The lightweight, well-balanced design improves handling control and minimizes operator fatigue-making it ideal for long-shift or high-volume drilling operations.
Available Sizes:
| Specification | Overall length | Blade length |
| 1mm | 12mm | 34mm |
1. Industrial-Level Wear & Heat Resistance
Made from M35 cobalt high-speed steel, these drill bits maintain hardness and cutting sharpness under high-temperature, high-friction conditions-ideal for industrial-grade operations.
2. Broad Material Compatibility
Effectively drills through stainless steel, hardened alloys, carbon steel, and cast iron, making it a reliable solution for metalworking plants, fabrication shops, and maintenance departments.
3. Proven Multi-Use Value
Whether in machinery assembly, construction, metal repair, or installation, these bits offer clean, consistent, and efficient performance, trusted by both professional technicians and workshop users.
CNC Precision Grinding
Guarantees uniform flute geometry and tip angle for stable, repeatable drilling in high-speed, industrial conditions.
Vacuum Heat Treatment
Increases surface hardness and internal durability, extending lifespan under heavy-duty and continuous-use environments.
Ultra-Fine Polishing
Minimizes chip adhesion and heat accumulation, resulting in cleaner holes and reduced wear on both tool and workpiece.
EAF + LF + VD + RS ESR Process
Produces high-toughness M35 cobalt alloy with ultra-low impurities, enhancing strength, reliability, and resistance to thermal shock and chipping.
Quenching + Cryogenic + Tempering
Achieves up to HRC 67 hardness while maintaining flexibility, preventing microcracks and ensuring performance in metal drilling applications.
Rapid Solidification ESR
Improves the carbide/cobalt grain distribution for a sharper, more wear-resistant edge, ideal for deep-hole and high-speed industrial drilling.
M35 Priority Build
Standard configuration uses M35 HSS for optimal wear resistance in stainless steel and alloy materials; optional upgrades to M2 or M42 are available.
Geometry & Coating Customization
Custom flute length, helix angles, and PVD coatings (TiN, TiAlN, TiCN) available to meet specific material or operational demands.
High-Efficiency Spiral Flutes
Promotes quick chip removal and reduces heat buildup-essential when drilling dense or heat-sensitive metals.
Precision Cutting Angles
Optimized tip and helix angles ensure maximized cutting force and lower tool wear.
Application-Driven Coatings
Coating options like TiAlN or TiCN extend tool life in abrasive, high-heat conditions, providing performance consistency in industrial use.
Q1: What materials and coatings are available for industrial-grade M35 drill bits?
Materials: Our standard product uses M35 cobalt high-speed steel, known for its superior heat and wear resistance. Additional options include M2, M42, and PM-HSS (powder metallurgy) for specialized needs.
Coatings: Available coatings include:
TiN - General-purpose
TiAlN - For high-temperature drilling
TiCN - For maximum surface hardness
Uncoated options are available for cost-sensitive or custom-use applications.
Note: The right coating can extend tool life by 2-3×, especially on stainless steel or titanium alloys.
Q2: What causes early wear or breakage in M35 drill bits?
Operational causes: Excessive feed pressure, no cooling, or dry drilling significantly reduce lifespan. Always use cutting fluid to reduce heat/friction.
Selection errors: Hard materials require M35 or coated drills. Avoid general-purpose HSS for stainless or hardened steel.
Support policy: We offer technical assistance and accept replacement requests in cases of non-user damage.
Q3: When should I replace an M35 drill bit?
Look for signs such as:
Rough or inconsistent hole finish
Diameter deviation over 0.1mm
Unusual vibration or cutting noise
Tip: Use a magnifier to inspect the cutting edge for wear, chipping, or rounding during routine checks.
Q4: How do I select the correct helix angle for my drilling material?
30°-35° (Standard Helix): For carbon steel, cast iron, and most alloy steels.
40°-45° (High Helix): Ideal for soft materials like aluminum and copper; improves chip evacuation.
10°-20° (Low Helix): Best for hardened or quenched steel; minimizes chatter and enhances tool stability.
Q5: Can I order custom or non-standard M35 drills for specific applications?
Yes. We offer fully customized M35 twist drills, including:
Step drills
Non-standard point angles
Internal coolant holes
Custom flute length, helix, or shank types
Note: Technical drawings or specifications are required for custom designs.
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