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Certified Black Oxide HSS Drill Bits
Premium HSS material for durable general-purpose drilling.
Black oxide finish boosts abrasion resistance and reduces friction.
135° conventional point delivers smooth and precise cutting.
Jobber length & round shank fit most drills and daily use.
Versatile for metal, plastic and wood, cost-effective for all tasks.
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: M42 cobalt HSS with 8% cobalt, HRC 65–67
- Surface Finish: Bronze finish, black oxide, bright finish, or customized coating
- Shank Type Customization Straight shank / Reduced shank
- OEM / ODM support with custom laser logo engraving
Application Notes
Discover the versatile applications and material compatibility of our products
Drilling Steel
- •Designed for drilling steel materials, this twist drill bit provides steady cutting performance and clean hole edges. The sharp cutting point helps improve drilling accuracy, while the durable HSS body supports reliable use in workshops, factories, and bulk industrial applications.
Drilling Aluminum
- •Certified black oxide HSS drill bits are designed for smooth drilling in aluminum materials. The black oxide surface helps reduce friction and improve chip removal, while the sharp cutting edge supports clean holes, fewer burrs, and stable performance for bulk industrial use.
Drilling Stainless Stee
- •Designed for stainless steel drilling, this twist drill bit offers stable cutting performance under high heat and friction. The sharp point helps reduce slipping, while the durable cutting edge supports cleaner holes and longer service life in industrial metalworking.
Real Factory & Application Videos
Watch real manufacturing and field applications to verify quality, performance, and supply capability
How To Choose Twist Drills For Bulk Purchase Without Losing Cost?
Factory Direct Twist Drills With Strict Quality Control, Stable Batch Consistency
Which Factory Offers More Stable Quality For High-Hardness Twist Drills?
Cobalt-Alloyed (M35/M42) Twist Drills For Hardened Stainless Steel
Have You Found The Right Supplier For Stainless Steel Cutting Twist Drills?
Polished Flutes For Low-Friction Chip Flow, No Aluminum Clogging
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.
What Are Black Oxide Drill Bits for?
They are made for general drilling on mild steel, wood, plastic and common daily soft materials.
What Is A Black Oxide Drill Bit?
It is standard HSS drill bit with black oxide coating for anti-rust and basic heat resistance.
Which Is Better Titanium Or Black Oxide Drill Bits?
Titanium coated bits are harder and more durable, better than black oxide for frequent metal work.
Can Black Oxide Drill Bits Go Through Metal?
Yes, they work well on mild steel and thin metal, not suitable for hard steel or stainless steel.
Are All Black Oxide Drill Bits High Speed Steel?
Most regular black oxide drill bits are made of standard high speed steel as base material.
Are Black Oxide Coated Drill Bits Good For Stucco?
They can drill stucco smoothly with moderate speed, fit common wall and masonry light drilling.
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Trusted by businesses worldwide
See what our global partners say about our premium drilling tools and cutting solutions.
"Black oxide surface effectively prevents rust and lubricates well during drilling. Strict certified dimensional tolerance fits our precision mechanical parts processing perfectly."
Hans Mueller
Mechanical Parts Manufacturer
Switzerland
"Certified quality reports are fully provided for our local market inspection. Black oxide HSS bits perform steadily on wood, iron and general metal. Ideal for mixed wholesale business."
Maria Silva
Building Materials Importer
Portugal
"We purchase black oxide drill bits for factory daily maintenance. The surface treatment reduces chip adhesion, drilling is smoother and cleaner. Reliable long-term supply partner."
Ben Carter
Maintenance Engineering Manager
New Zealand
"Black oxide surface effectively prevents rust and lubricates well during drilling. Strict certified dimensional tolerance fits our precision mechanical parts processing perfectly."
Hans Mueller
Mechanical Parts Manufacturer
Switzerland
"Certified quality reports are fully provided for our local market inspection. Black oxide HSS bits perform steadily on wood, iron and general metal. Ideal for mixed wholesale business."
Maria Silva
Building Materials Importer
Portugal
"We purchase black oxide drill bits for factory daily maintenance. The surface treatment reduces chip adhesion, drilling is smoother and cleaner. Reliable long-term supply partner."
Ben Carter
Maintenance Engineering Manager
New Zealand
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