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Premium M35 Cobalt Drill Bit Sets
High-quality HSS material maintains sharp cutting edges longer than standard bits.
Deep spiral flutes improve chip flow, preventing heat buildup and overheating.
Sharp 118-degree point geometry delivers clean, precise cuts on all materials.
Precision-ground shank ensures a tight fit in both corded and cordless drills.
CNC-balanced design reduces vibration for more accurate and stable drilling.
Trusted by Global Brands
OEM Partner for Industry Leaders
Customization & Packaging
Complete OEM/ODM solutions tailored to your brand requirements
Build Your Own Brand with Custom Certified Black Oxide HSS Drill Bits
- Material: HSS4241 / HSS54341 / HSS6542 (M2) / M35 Co5% / M42 Co8%
- Surface Finish: Black Oxide / Silver / Titanium Coated / Amber / Titanium Coated with Black
- Shank Type Customization Straight shank / Reduced shank
- Private label bespoke size material carton bulk export order
Application Notes
Discover the versatile applications and material compatibility of our products
Drilling Steel
- •Twist drill bits deliver stable cutting performance in steel materials, providing accurate hole positioning and reliable drilling efficiency for workshop applications.
Drilling Aluminum
- •Designed for smooth aluminum drilling, helping achieve clean holes, fast chip removal, and reduced material sticking during operation.
Drilling Stainless Stee
- •Suitable for stainless steel drilling applications, offering stable heat resistance and durable cutting performance for harder metal materials.
Real Factory & Application Videos
Watch real manufacturing and field applications to verify quality, performance, and supply capability
Need High-Precision Twist Bits for Clean Round Holes?
Delivers clean, round and smooth holes on metal, wood and plastic.
Fed Up With Bits That Overheat and Wear Out Quickly?
Excellent heat resistance reduces overheating during long drilling tasks.
Why Use Low-Quality Bits That Ruin Your Workpiece?
Precise tip design prevents wandering and improves drilling accuracy.
Our Production Process
From raw materials to finished products, every step is meticulously controlled to ensure superior quality and precision.
Raw Material Cutting
Heat Treatment
Coarse Grinding
Shank Grinding
Flute Edge Grinding
Fine Grinding
Double Angle
Angle Grinding
Sharping Edge
International Certifications
Our products meet the highest international standards and are certified by leading quality organizations worldwide.
RoHS Certificate
• Expiry Date:2027.10.05
ISO 9001:2015
• Expiry Date:2028.10.05
SGS Audit Report
• Expiry Date:2028.01.05
Product Spec Table
| SKU | Key Specs | Material / Coating | Packaging |
|---|---|---|---|
| 1/64"/0.5mm | 12mm Flute Length / 34mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 3/64"/1.0mm | 12mm Flute Length / 34mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 1/16"/1.5mm | 20mm Flute Length / 43mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 5/64"/2.0mm | 24mm Flute Length / 49mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 3/32"/2.5mm | 30mm Flute Length / 57mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 7/64"/3.0mm | 33mm Flute Length / 61mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 9/34"/3.5mm | 39mm Flute Length / 70mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 5/32"/4.0mm | 43mm Flute Length / 75mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 11/64"/4.5mm | 47mm Flute Length / 80mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 3/16"/5.0mm | 52mm Flute Length / 86mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 7/32"/5.5mm | 57mm Flute Length / 93mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 15/64"/6.0mm | 57mm Flute Length / 93mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 1/4"/6.5mm | 63mm Flute Length / 101mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 17/64"/7.0mm | 69mm Flute Length / 109mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 9/32"/7.5mm | 169mm Flute Length / 101mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 5/16"/8.0mm | 75mm Flute Length / 117mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 21/64"/8.5mm | 75mm Flute Length / 117mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 11/32"/9.0mm | 81mm Flute Length / 125mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 3/8"/9.5mm | 81mm Flute Length / 125mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 25/64"/10.0mm | 87mm Flute Length / 133mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 13/32"/10.5mm | 87mm Flute Length / 133mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 27/26"/11mm | 94mm Flute Length / 142mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 7/16"/11.5mm | 94mm Flute Length / 142mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 15/32"/12mm | 101mm Flute Length / 151mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 31/64"/12.5mm | 101mm Flute Length / 151mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 1/2"/13.0mm +mm | 101mm Flute Length / 151mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 17/32"/13.5mm | 108mm Flute Length / 160mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 9/16"/14.0mm | 108mm Flute Length / 160mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 37/64"/14.5mm | 114mm Flute Length / 169mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 19/32"/15.0mm | 114mm Flute Length / 169mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 39/64"/15.5mm | 120mm Flute Length / 178mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 5/8"/16.0mm | 120mm Flute Length / 178mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 21/32"/16.5mm | 125mm Flute Length / 184mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 43/64"/17.0mm | 125mm Flute Length / 184mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 11/16"/17.5mm | 130mm Flute Length / 191mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 45/64"/18.0mm | 130mm Flute Length / 191mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 47/64"/18.5mm | 135mm Flute Length / 198mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 3/4"/19.0mm | 135mm Flute Length / 198mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 49/64"/19.5mm | 140mm Flute Length / 205mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
| 25/32"/20.0mm | 140mm Flute Length / 205mm Overall Length | M35/M42 Body Material/Custom Coated | Plastic Box/Paper Box/Customization |
Frequently Asked Questions
Everything you need to know about our products, customization options, and ordering process.
Are M35 Cobalt Drill Bits Good?
M35 cobalt drill bits own great heat resistance and hardness, ideal for drilling stainless steel and hard alloy materials.
Which Is Better, Cobalt Or Carbide Drill Bits?
Cobalt bits suit general hard metal drilling, while carbide bits deliver stronger wear resistance for ultra-hard industrial materials.
What Does M35 Cobalt Mean?
M35 cobalt refers to high-speed steel blended with cobalt elements, boosting high temperature resistance and cutting durability.
What Is The Difference Between M2 And M35 Drill Bits?
M2 is standard ordinary HSS steel, while M35 adds cobalt content for higher hardness and better performance on tough metals.
What's Better, Hss Or Cobalt?
Cobalt drill bits outperform regular HSS bits in heat resistance and strength, perfect for stainless steel and heavy-duty drilling.
Which Is Better, M35 Or M42 Cobalt?
M42 cobalt contains higher cobalt ratio with stronger hardness, while M35 balances cost and performance for daily hard metal work.
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Trusted by businesses worldwide
See what our global partners say about our premium drilling tools and cutting solutions.
"We apply premium M35 cobalt drill bit sets for stainless steel and hard alloy drilling. M35 cobalt material provides great heat resistance, staying sharp even under continuous heavy-duty work. Satisfied with quality and service, we will renew our long-term purchasing contract."
Henrik Olsen
Mechanical Parts Manufacturer
Finland
"We wholesale M35 cobalt drill bit sets for retail gift packages and engineering bulk supply. Complete size range and premium packaging fit supermarket and project tender needs. Price is stable and MOQ is friendly, we plan to expand cooperation to more tool series."
Patricia Lopez
Gift & Tool Set Wholesaler
Mexico
"Every branch of our repair chain is equipped with M35 cobalt drill bit sets. Cobalt alloy reduces thermal wear obviously, cutting down our tool replacement cost greatly. We highly recognize your product quality and hope for lasting cooperation."
George Dimitriou
Mechanical Repair Shop Chain Manager
Greece
"We apply premium M35 cobalt drill bit sets for stainless steel and hard alloy drilling. M35 cobalt material provides great heat resistance, staying sharp even under continuous heavy-duty work. Satisfied with quality and service, we will renew our long-term purchasing contract."
Henrik Olsen
Mechanical Parts Manufacturer
Finland
"We wholesale M35 cobalt drill bit sets for retail gift packages and engineering bulk supply. Complete size range and premium packaging fit supermarket and project tender needs. Price is stable and MOQ is friendly, we plan to expand cooperation to more tool series."
Patricia Lopez
Gift & Tool Set Wholesaler
Mexico
"Every branch of our repair chain is equipped with M35 cobalt drill bit sets. Cobalt alloy reduces thermal wear obviously, cutting down our tool replacement cost greatly. We highly recognize your product quality and hope for lasting cooperation."
George Dimitriou
Mechanical Repair Shop Chain Manager
Greece
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