Best Cobalt Short Drill Bits of 2025

Harry Stack Avatar
Harry Stack
Last Updated: Jan 7, 2025

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Cobalt short drill bits are a popular choice for those who require precision drilling in tough materials such as stainless steel, titanium, and other hard metals. Made from high-speed steel with added cobalt for extra durability, these drill bits are designed to withstand the high temperatures and pressures involved in drilling through hard materials. The short length of these bits makes them ideal for use in tight spaces and hard-to-reach areas. They are available in a range of sizes to suit different drilling needs, and their superior strength and longevity make them a reliable and cost-effective choice for professionals and DIY enthusiasts alike.

At a Glance: Our Top Picks

Drill America Cobalt Heavy Duty Split Point Stub Drill Bit Cover #TOP 1
Drill America Cobalt Heavy Duty Split Point Stub Drill Bit
ftb score rating icon 9.9
Chicago Latrobe 559 Cobalt Steel Short Length Drill Bit Cover #TOP 2
Chicago Latrobe 559 Cobalt Steel Short Length Drill Bit
ftb score rating icon 9.8
toolant 1/2" Cobalt Drill Bit Set Cover #TOP 3
toolant 1/2" Cobalt Drill Bit Set
ftb score rating icon 9.6

Top 10 Cobalt Short Drill Bits

#TOP 1

Drill America Cobalt Heavy Duty Split Point Stub Drill Bit

D/ASTCO3/16P12
3/16 in
Drill America Cobalt Heavy Duty Split Point Stub Drill Bit Cover
Drill America - D/ASTCO3/16P12 3/16" Cobalt Heavy Duty Split Point Stub Drill Bit (Pack of 12), D/ASTCO Series

The Drill America Cobalt Heavy Duty Split Point Stub Drill Bit is perfect for cutting harder metals like stainless steel or nickel alloys. Its cobalt steel material provides improved performance, and the gold oxide surface treatment makes it easy to identify. The round shanks allow for use in a wide variety of toolholding systems, while the counterclockwise direction helps reduce clogging. Whether you're using a portable or machine drilling system, this is the ideal drill bit for your needs.

What We Like
Improved performance when cutting harder metals
Gold oxide surface treatment for easy identification
Round shanks compatible with many toolholding systems
#TOP 2

Chicago Latrobe 559 Cobalt Steel Short Length Drill Bit

50805
1/8 in
Chicago Latrobe 559 Cobalt Steel Short Length Drill Bit Cover
Chicago Latrobe 559 Cobalt Steel Short Length Drill Bit, Gold Oxide Finish, Round Shank, 135 Degree Split Point, 1/8" Size (Pack of 12)

The Chicago Latrobe 559 Cobalt Steel Short Length Drill Bit, with a gold oxide finish and a round shank, is designed to reduce tool deflection and breakage with its short length. Made of cobalt steel, it offers extended tool life compared to high-speed steel drill bits when drilling hard materials. The 135-degree split point penetrates hard materials without a pilot hole and produces small chips to reduce clogging. Additionally, the extra-thick web provides increased strength and rigidity compared to standard drill bits. Made in the USA, this drill bit is ideal for drilling hard materials, such as ferrous materials.

What We Like
Durable cobalt steel construction for extended tool life
Gold oxide finish lubricates and provides wear resistance
135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
Extra-thick web for increased strength and rigidity
Made in the USA
#TOP 3

toolant 1/2" Cobalt Drill Bit Set

TA01062018
Dark Blue
1/2 in (5pcs)
toolant 1/2" Cobalt Drill Bit Set Cover
toolant 1/2" Cobalt Drill Bit Set for Metal and Steel (Pro), Titanium Aluminum Nitride Coated (TiAlN) with Bullet Point Tip, for Hardened Metal, Stainless Steel, 5-Piece Bulk

The toolant Cobalt Drill Bits are designed to tackle tough metal and steel tasks with ease. The titanium aluminum nitride coating enhances the surface hardness, allowing you to drill faster while maintaining sharpness. Made from M35 cobalt high-speed steel, these bits offer excellent strength and heat resistance, perfect for demanding jobs. The specially designed bullet point tip ensures precise drilling by minimizing wandering, giving you confidence in your work. With five high-quality bits in the set, you are well-equipped for various projects.

What We Like
High surface hardness
Excellent heat resistance
Precise self-centering tip
Durable cobalt steel construction
#TOP 4

Precision Twist Cobalt Steel Drill Bit

Precision Twist Drill
040316
1/4 in
Precision Twist Cobalt Steel Drill Bit Cover
Precision Twist M40CO Cobalt Steel Short Length Drill Bit, Bronze Oxide Finish, Round Shank, Spiral Flute, 135 Degree Point Angle, 1/4" (Pack of 12)

The Precision Twist M40CO Cobalt Steel Short Length Drill Bit is a great choice for drilling through hard substances. It features a gold oxide finish that retains cutting fluid and prevents chip to tool welding. The 135-degree split point angle is self-centering, reduces walking, and reduces pressure on cutting edges. The short-length design increases strength and rigidity, while the round shank can be used on a variety of tool-holding systems. This drill bit is ideal for those who need a tough and reliable tool for drilling through hard materials.

What We Like
Durable cobalt steel construction
Gold oxide finish retains cutting fluid and prevents chip to tool welding
135-degree split point angle reduces walking and pressure on cutting edges
Short-length design increases strength and rigidity
#TOP 5

Drill America Cobalt Short Threaded Shank Drill Bit

TSD3/8S
Black Oxide
3/8 in
Drill America Cobalt Short Threaded Shank Drill Bit Cover
Drill America 3/8" Cobalt Short Threaded Shank Drill Bit Overall Length 1-1/4, TSD Series

The Drill America Cobalt Short Threaded Shank Drill Bit is made of cobalt steel with a threaded shank for use with threaded-spindle tools. It has a gold oxide surface treatment and 135 degrees heavy duty split point to drill harder metals such as stainless steel or nickel alloys. The spiral fluted tool evacuates chips up and out of the cut to reduce clogging. It is surface treated for drilling hard, tough, high tensile strength materials, making it ideal for aerospace and automotive applications.

What We Like
Durable cobalt steel material
Threaded shank for use with threaded-spindle tools
Gold oxide surface treatment for easy identification
135 degrees heavy duty split point for improved drilling performance
Spiral fluted tool evacuates chips to reduce clogging
#TOP 6

uxcell 10mm HSS Cobalt Twist Drill Bit

SYNCTEA035849
uxcell 10mm HSS Cobalt Twist Drill Bit Cover
uxcell 10mm Drilling Dia 130mm Length M35 HSS Cobalt Round Shank Twist Drill Bit 2pcs

This drill bit features a diameter of 10mm and a total length of 130mm, with an 80mm flute length. It is made of M35/HSS Cobalt and comes in a champagne color. The package includes 2 pieces of drill bits. This product is ideal for short drilling tasks.

What We Like
High-quality M35/HSS Cobalt material
Champagne color design
Comes in a pack of 2
#TOP 7

HSS Cobalt Drill Bit 1/8 in - GRABOTE

GRABOTE
GRABOTE
HSS Cobalt Drill Bit 1/8 in - GRABOTE Cover
HSS Cobalt Drill Bit Double End 1/8 in Stubby Body Drill Steel -10Pcs - GRABOTE

The GRABOTE Cobalt Drill Bits are an excellent choice for DIY enthusiasts. Made from high-quality materials, these bits are designed to last, giving you reliable performance for your projects. The double threaded chip flute enhances drilling efficiency, allowing you to work faster and more effectively. With their impressive hardness and wear resistance, they are perfect for tackling tough materials like stainless steel and other metals. Plus, the double-ended design offers added durability, ensuring that you can rely on them for multiple uses without compromise.

What We Like
Durable construction
Improved drilling efficiency
High hardness resistance
Versatile for various materials

uxcell HSS Cobalt Metric Drill Bit

a17011600ux0464
uxcell HSS Cobalt Metric Drill Bit Cover
uxcell 10.2mm Dia HSS Cobalt Straight Round Shank Metric Twist Drill Bit Drilling Tool

This straight shank twist drill bit has a total length of 130mm and a shank diameter of 10.2mm. Made of HSS and cobalt, it features a flute length of 70mm and a bit diameter of 10.2mm. This champagne-colored drill bit weighs 62g, and it is ideal for drilling in tight spaces.

What We Like
Compact size and short length allow for easy use in tight spaces
Durable HSS cobalt material for a long lifespan
Straight shank enables easy and secure gripping
#TOP 9

uxcell 6.8mm HSS Cobalt Twist Drill Bit

a17011600ux0378
uxcell 6.8mm HSS Cobalt Twist Drill Bit Cover
uxcell 6.8mm Drilling Dia Straight Shank HSS Cobalt Metric Twist Drill Bit 3pcs

The uxcell 6.8mm Twist Drill Bit is a high-quality drilling tool designed for various applications. With a total length of 108mm and a shank diameter of 6.8mm, this drill bit is perfect for drilling holes in different materials. Made from HSS and Cobalt, it offers durability and long-lasting performance. The flute length of 58mm provides sufficient room for chip removal during drilling. The straight shank design ensures stability and precise drilling. The champagne color adds a touch of elegance to the drill bit. Whether you are a professional or a DIY enthusiast, the uxcell 6.8mm Twist Drill Bit is an essential tool that will make your drilling tasks easier and more efficient.

What We Like
Durable
Precise drilling
Wide range of applications
#TOP 10

Dormer A920 Cobalt Steel Spectrum Short Length Drill Bit

Dormer
050989
Dormer A920 Cobalt Steel Spectrum Short Length Drill Bit Cover
Dormer A920 Cobalt Steel Spectrum Short Length Drill Bit, Uncoated (Bright) Finish, Round Shank, 130 Degree Special Point, D

The Dormer A920 Cobalt Steel Spectrum Short Length Drill Bit, also known as the Dormer Cobalt Steel Drill Bit, is a high-quality drill bit designed for drilling into hard materials. With its stub-length design, it offers the greatest rigidity among the various drill bit lengths, ensuring precise and accurate drilling. The 130-degree point angle of the drill bit allows for easy centering and reduces pressure on the cutting edges, resulting in smoother and cleaner holes. Made from high-speed steel (HSS) containing cobalt, this drill bit provides a perfect balance of toughness and hardness, making it ideal for tough drilling tasks. The uncoated (bright) finish allows for versatile use with a wide range of drilling materials, while the round shanks ensure compatibility with various tool-holding systems. Overall, the Dormer Cobalt Steel Drill Bit offers durability, precision, and versatility, making it a reliable choice for any drilling project.

What We Like
Rigid and precise drilling
Reduces pressure on cutting edges
Tough and durable
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Are cobalt drill bits worth it?

Cobalt drill bits are incredibly strong. They can be operated at much higher speeds than a standard HSS drill bit. The ability to withstand heat means that cobalt bits perform for long periods without cooling or the need for cutting fluid. They are most often used to cut through hardened and abrasive materials.

2. Is cobalt the strongest drill bit?

There aren't many materials strong enough to put holes in hardened steel. When you need that kind of strength, the only answer is cobalt alloy drill bits. Cobalt drill bits are made of a steel alloy of 5 to 8 percent cobalt.

3. Are cobalt or titanium bits better?

Cobalt drill bits are more expensive, but offer longer life, and are more resistant to heat than titanium drill bits. Cobalt drill bits are also tougher and can drill holes in the hardest metals.

4. Are cobalt drill bits more brittle?

The more cobalt a drill bit contains the harder the metal you will be able to drill however, the increase in cobalt has a downside in that it makes the drill bit more brittle.

Editor's Notes

During our cobalt short drill bit research, we found 24 cobalt short drill bit products and shortlisted 10 quality products. We collected and analyzed 4,179 customer reviews through our big data system to write the cobalt short drill bits list. We found that most customers choose cobalt short drill bits with an average price of $13.40.

The cobalt short drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of cobalt short drill bits, including Drill America, Chicago-Latrobe, toolant, Precision Twist Drill, uxcell. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Harry Stack Avatar

Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.