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Cobalt Drill Bit Sets Industrial
Industrial cobalt sets support hard-metal users needing organized size coverage for jobs.
Case-based assortments help maintenance teams replace broken sizes quickly during operations onsite.
Strong selection for distributors serving fabrication plants and heavy repair workshop accounts.
Helps buyers upsell from entry-level HSS sets to professional metalworking kits easily.
Suitable for catalog programs targeting stainless steel, cast iron, and alloy users.
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 Precision Twist Drill Bits
- Set Range Customization: 13pcs, 19pcs, 25pcs, or full-size assortments
- Metric & Inch Set: Metric, fractional inch, or mixed export sets
- Material Options: HSS 6542, M35, M42, or carbide
- OEM Identification Support: Logo, item code, cobalt grade, and size marking
Application Notes
Discover the versatile applications and material compatibility of our products
99pcs Titanium Coated HSS Drill Bit Set with Black Carry Case
- •This 99pcs titanium coated HSS drill bit set comes in a black carry case, offering multiple replacement sizes, organized storage, and practical use for metal, wood, and plastic drilling.
29pcs HSS Twist Drill Bit Set 1-13mm with Plastic Index Case
- •This 29pcs HSS twist drill bit set is packed in a grey plastic index case, with clear size marking, compact storage, and easy selection for daily drilling work.
19pcs HSS Twist Drill Bit Set with Yellow Plastic Index Case
- •This 19pcs HSS drill bit set comes in a yellow flip case, offering compact storage, clear size selection, and reliable performance for daily metal, wood, and plastic drilling.
28pcs Titanium Coated HSS Drill Bit Set with Metal Index Case
- •This 28pcs titanium coated HSS drill bit set is packed in a durable metal index case, ideal for organized storage, workshop use, hardware retail, and industrial supply.
34pcs HSS Twist Drill Bit Set with Transparent Hanging Case
- •This 34pcs HSS twist drill bit set features a transparent hanging case, making it suitable for retail display, easy size checking, and general-purpose drilling applications.
29pcs HSS Drill Bit Set with Orange Plastic Hanging Case
- •This 29pcs HSS drill bit set comes in an orange hanging plastic case, offering clear size display, easy storage, and practical use for metal, wood, and plastic drilling.
29pcs Multi-Purpose Drill Bit Set with Yellow Plastic Case
- •This 29pcs multi-purpose drill bit set includes HSS, masonry, and wood drill bits in a yellow plastic case, suitable for household repair, retail display, and mixed-material drilling.
10pcs Wood Forstner Drill Bit Set with Wooden Box
- •This 10pcs wood Forstner drill bit set is packed in a premium wooden box, ideal for clean wood boring, cabinet making, woodworking shops, and professional tool retail.
5pcs Titanium Coated Drill Bit Set with Wooden Box
- •This 5pcs titanium coated drill bit set is packed in a compact wooden box, offering neat storage, easy size selection, and practical use for wood, plastic, and light metal drilling.
Real Factory & Application Videos
Watch real manufacturing and field applications to verify quality, performance, and supply capability
Are Your Drill Bits Suitable for Private Label Promotion?
Logo marking and custom packaging help distributors build stronger local brand recognition.
Why Do Tool Brands Need Different Drill Bit Finishes?
Bright, black oxide, titanium, and black-gold finishes support different price and market levels.
Want Drill Bits That Help Reduce After-Sales Pressure?
Stable hardness, accurate size, and cleaner cutting help reduce user complaints after delivery.
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.
A To Z Letter Size Cobalt Drill Bit Set?
This full A To Z Letter Size Cobalt Drill Bit Set covers complete letter marked dimensions. M42 cobalt alloy delivers outstanding heat resistance, suitable for stainless steel and hard alloy drilling. Wide size range satisfies diverse industrial machining demands.
Are Cobalt Drill Bits Set?
Standard finished goods Cobalt Drill Bits Set contain assorted specifications for universal metal processing. Integrated grouping design facilitates storage and selection, durable cobalt material adapts long-duration workshop drilling tasks.
What Size Is A Letter Z Drill Bit?
Letter Z drill bit belongs to industrial letter sizing series. It owns fixed outer diameter dimension, commonly applied for mechanical assembly hole making. This specification fits standard machining tolerance for metal part fitting work.
What Are M42 Cobalt Drill Bits?
M42 Cobalt Drill Bits are high alloy cutting tools mixed with rich cobalt element. The special material formula boosts wear and heat resistance, capable of drilling hardened steel, stainless steel and tough alloy steadily.
Is Cobalt Good for Drill Bits?
Cobalt serves as excellent additive material for drill bits. It effectively enhances bit hardness and high temperature endurance, hardly gets blunt during heavy-duty metal cutting, ideal for harsh industrial drilling scenarios.
What's Better, HSS or Cobalt?
Cobalt drill bits perform superiorly on hard stainless steel and alloy materials. Regular HSS bits work cost-effectively on mild steel and common metal. Choose cobalt for heavy hard metal work, pick HSS for daily general drilling.
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Trusted by businesses worldwide
See what our global partners say about our premium drilling tools and cutting solutions.
"We equip workshop with cobalt drill bit set industrial grade for various high-hardness material combined drilling. Rich size combination covers most industrial processing aperture demands, unified cobalt material standard ensures consistent whole set performance."
Erik Nilsson
Senior Technical Director
Sweden
"We purchase industrial grade cobalt drill bit sets to distribute to multiple local manufacturing enterprises. Strict factory level inspection eliminates unqualified products, the whole set is convenient for enterprise unified equipment allocation and management."
Elena Rossi
Brand Development Manager
Italy
"Our heavy equipment maintenance team uses complete industrial cobalt drill bit sets for large machinery disassembly and hole repairing. Strong comprehensive performance adapts to complex on-site working conditions, greatly improving maintenance completion efficiency."
David Miller
Procurement Specialist
Australia
"We equip workshop with cobalt drill bit set industrial grade for various high-hardness material combined drilling. Rich size combination covers most industrial processing aperture demands, unified cobalt material standard ensures consistent whole set performance."
Erik Nilsson
Senior Technical Director
Sweden
"We purchase industrial grade cobalt drill bit sets to distribute to multiple local manufacturing enterprises. Strict factory level inspection eliminates unqualified products, the whole set is convenient for enterprise unified equipment allocation and management."
Elena Rossi
Brand Development Manager
Italy
"Our heavy equipment maintenance team uses complete industrial cobalt drill bit sets for large machinery disassembly and hole repairing. Strong comprehensive performance adapts to complex on-site working conditions, greatly improving maintenance completion efficiency."
David Miller
Procurement Specialist
Australia
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