Stainless Steel Drill Bits

Adley Washington
11 min readJun 18, 2024


Looking for the perfect drill bits to tackle any type of stainless steel surface? Look no further! In this comprehensive roundup, we’ve gathered the best stainless steel drill bits available on the market. From high-quality materials to incredible durability, these bits are designed to handle the toughest jobs. Get ready to dive into the world of stainless steel drilling with our top picks.

The Top 5 Best Stainless Steel Drill Bits

  1. MACXCOIP High-Quality Cobalt Drill Bit Set — The MACXCOIP Cobalt Drill Bit Set offers 29 M35 high-speed steel bits for various materials, delivering quick, efficient, and long-lasting performance with self-centering tips.
  2. Premium 1/2" Shank Silver and Deming Drill Bit Set with Titanium Finish — Experience superior drilling performance with the EFFICERE Best Choice 8-Piece 1/2” Shank Silver and Deming Drill Bit Set in Aluminum, featuring 135° split point, self-centering technology, and a durable dual-coated gold titanium and black nitride finish.
  3. Comprehensive Cobalt Drill Bit Set for Various Materials — Equip yourself with 115 versatile drill bits, featuring HSS M35 Cobalt 5% for exceptional heat and abrasion resistance, organized in a handy holder for ultimate performance and convenience.
  4. Cobalt Steel Drill Bit Set for Stainless Steel and Various Hard Metals — Equip yourself with the NordWolf 14-Piece M35 Cobalt Drill Bit Set, designed for superior durability and multi-purpose drilling applications on stainless steel and various hard metals.
  5. 6% Cobalt Step Drill Bit for Stainless Steel and Hard Metals — For accurate drilling in stainless steel and tough metals, the STROTON 6% Cobalt Step Drill Bit boasts 15 different actions, ensuring remarkable robustness and antichip capabilities. This makes it the perfect fit for any task on hand.

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MACXCOIP High-Quality Cobalt Drill Bit Set


When I first picked up this MACXCOIP Cobalt Drill Bit Set, I was impressed by the sturdy, compact packaging that made organizing and using these bits a breeze. Featuring a variety of sizes from 29 sets of drill bits, this set surely met all my needs. However, I was a bit surprised that the metal index wasn’t as easy-to-use as I had hoped.

I found the M35 cobalt drill bit to be truly durable and sharp, cutting through hardened metals and even plastics and wood with incredible ease. The 135-degree point tip, along with the twist design, ensured fast cutting and self-centering to prevent walk-off, making the drilling process efficient and smooth.

However, the drill holder with size indexes wasn’t as sturdy as expected, making it difficult to hold without causing the bits to rattle around. Despite this minor setback, I appreciated the high-quality cutting performance provided by the HSS cobalt drill bits, which were perfect for working with hardened steel. The set’s long-term use and improved sharpness and sharp cutting from the hardened and polished inserts were definite pros.

Overall, my experience with this MACXCOIP Cobalt Drill Bit Set was positive, but I look forward to improvements in the storage and holder features in future models.

Premium 1/2" Shank Silver and Deming Drill Bit Set with Titanium Finish


For those in need of high-quality drill bits, look no further than the EFFICERE Best Choice 8-Piece 1/2" Shank Silver and Deming Drill Bit Set in Aluminum. This exceptional set showcases the premium materials used for unmatched durability, with cobalt high-speed steel creating dependable strength. The 135-degree split point at the tip ensures a self-centering functionality, providing quicker speed and preventing walkouts.

The superior gold titanium and black nitride dual coating finish further increases the longevity and durability of these drill bits by enhancing their corrosion resistance. Each bit in the set features a universal 1/2-inch reduced shank with a tri-flat end, securing effortlessly onto 3-jaw power tools from various brands.

With 8 pieces included, featuring various 6-length silver and deming drill bits, this set offers a handy aluminum storage case for convenient carrying and organization. The users have praised the set for its great value, sharp edges, and overall impressive quality.

However, it’s essential to note that some users have noted the need to sharpen the bits upon receiving them, as one reviewer mentioned drilling with an oversized hole. Additionally, some cases have not been shipped with the set, causing minor inconvenience.

If you’re in the market for a dependable and long-lasting drill bit set, this EFFICERE Best Choice set is a strong contender. With its wide range of applications and durable construction, it is an excellent choice for professionals and DIY enthusiasts alike.

Comprehensive Cobalt Drill Bit Set for Various Materials


As a dedicated woodworker, I am thrilled to share the remarkable impact the COMOWARE Cobalt Drill Bit Set has had on my daily operations. It offers an impressive variety of 115 pieces, ensuring I always have the perfect tool for any project. The organizing system, featuring fractional, letter, and numbered sizes, makes it effortless to locate the precise bit I need.

The high-speed steel and 5% cobalt blend in the drill bit set has proven outstanding in terms of heat and abrasion resistance, significantly prolonging the bit set’s life and providing uniform performance. The enhanced 135° split point and twist design of the drill bit contribute to ensuring accuracy and prevent unnecessary walking when in use.

This exceptional set has truly demonstrated its worth in tackling tough materials like stainless steel, cast iron, and even complex plastics. Furthermore, it effortlessly simplifies the process of working with softer materials. The included, impeccably designed holder allows me to conveniently store and access all my bits in one consolidated position.

Despite its higher price tag, I can confidently assert that the COMOWARE Cobalt Drill Bit Set’s superior quality and adaptability make it a worthy investment for both avid DIY enthusiasts and professional woodworkers.

Cobalt Steel Drill Bit Set for Stainless Steel and Various Hard Metals


As a seasoned DIY enthusiast, I recently came across the NordWolf 14-Piece M35 Cobalt Drill Bit Set, and let me tell you, it’s been a game-changer for my projects. With the drill set’s high-quality M35 Cobalt steel precision ground jobber drill bits, I’ve noticed the extra durability and long lifetime, a rarity in hardware.

One of the things that stood out is the efficient design — a striking 135° split point multi-blade drill tip. It’s been a perfect tool for achieving a self-centering and surprisingly fast drilling experience. The compatibility of the 1/4-inch hex shank with standard and quick-change chucks and impact drivers has made my life easier.

The multi-purpose use of the drill set is truly impressive — it’s suitable for drilling through stainless steel, cast iron, titanium, bronze, aluminum, and many other materials. I’ve tested it on various surfaces, and the drill set’s capabilities never disappoint.

Lastly, I appreciate the unique storage solution included with this set. The drill bits come neatly packed in a special plastic box, with each size clearly imprinted for easy identification. The sliding clip on the backside of the box even makes it convenient for hanging on pegboards. This NordWolf drill bit set has undoubtedly earned a spot in my toolbox for future projects.

6% Cobalt Step Drill Bit for Stainless Steel and Hard Metals


The STROTON Cobalt Step Drill Bit is a top-notch tool designed for working with stainless steel and hard metal surfaces. Featuring 6% Cobalt steel, this drill bit boasts a hardness rating of 66–69 on the Rockwell scale, providing excellent wear and chip resistance for an extended device life.

With 15 different sizes available (ranging from 4mm to 32mm), it’s perfect for tackling various materials like iron, aluminum, ducts, wood, PVC, and plastic. The spiral flutes on the tool help clear debris as you drill, while the Cobalt alloy offers the strength needed to puncture through tougher materials.

Despite the higher cost, the drill bit is efficient and economical in the long run, as it can create several extra holes compared to other options. Experience the perfect combination of performance and durability with the STROTON Cobalt Step Drill Bit!

Buyer’s Guide

Welcome to our Buyer’s Guide for Stainless Steel Drill Bits. This section will provide you with essential features, considerations, and advice to help you make the right purchasing decision when looking for high-quality drill bits for your projects. Without further ado, let’s dive into the topic.

Important Features of Stainless Steel Drill Bits

  1. Material: Look for drill bits made of high-quality stainless steel, which offers durability, resistance to corrosion, and superior performance. Chrome-molybdenum alloy is a popular choice for its strength and toughness. Make sure to check if the drill bits are HSS (High-Speed Steel) coated to improve their heat resistance and working life.

Considerations Before Buying Stainless Steel Drill Bits

  1. Shank Type: Consider the type of shank, as it affects the drill bit’s compatibility with various drill machines. Common shank types include hexagonal, square, morse taper, and uniflute. Hexagonal and square shanks are the most widely used, while morse taper and uniflute shanks allow for better torque transmission and easier drilling in hard materials.

Advice for Choosing the Right Stainless Steel Drill Bits

  1. Drill Bit Sizes: Stainless steel drill bits come in various sizes to cater to different applications. Familiarize yourself with the most common sizes (e. g. , 1/16", 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", and 5/8") and choose the ones that match your intended projects. Keep in mind that smaller drill bits require more force and precision to use.

General Tips for Using Stainless Steel Drill Bits

  1. Drilling Technique: Using a steady, controlled drilling motion is crucial for achieving accurate and clean holes. Apply moderate pressure to avoid damaging the material being drilled. Additionally, make sure to lubricate the drilling area with a suitable lubricant or cutting oil to reduce friction and prolong the life of the drill bit. Finally, properly unscrew the drill bit after use to prevent any build-up of debris and to maintain its shape.


Why should I choose stainless steel drill bits?

Stainless steel drill bits offer a number of advantages over their counterparts made from other materials. For one, they are highly durable and resistant to corrosion, making them ideal for use in environments where moisture and humidity are common. Additionally, stainless steel drill bits are known for their exceptional wear resistance, ensuring that they last longer and require less frequent replacement.

Furthermore, stainless steel drill bits can handle a wide range of materials, including wood, metal, and even concrete. This versatility makes them a popular choice for DIY enthusiasts and professional contractors alike, as they can be used for a variety of tasks and applications without the need for multiple sets of drill bits.

What do the different drill bit sizes mean?

The size of a drill bit refers to the diameter of the hole it can create. The smaller the size, the thinner the wall of the hole. Drill bits are available in various sizes, ranging from very small to large. Common sizes used for household projects include 1/16 inch, 1/8 inch, 1/4 inch, and 3/8 inch.

It is essential to choose the correct size of drill bit for the job at hand. Using a drill bit that is too small can result in a weaker and more fragile hole, while using one that is too large can compromise the structural integrity of the material being drilled. Refer to the manufacturer’s specifications or guidelines for the appropriate size of drill bit for your project.

What is the difference between a high-speed steel drill bit and a stainless steel drill bit?

High-speed steel drill bits and stainless steel drill bits are both durable and wear-resistant, but they are designed for different purposes and applications. High-speed steel drill bits are specifically designed for heavy-duty tasks and are capable of handling high-stress applications, such as drilling through hard materials like metal and concrete. They are known for their exceptional heat resistance, which allows them to maintain their shape and cutting edge even under prolonged use.

Stainless steel drill bits, on the other hand, are more versatile and suitable for a wider range of applications. They can handle various materials, including wood, metal, and concrete, and are ideal for general-purpose drilling tasks. Stainless steel drill bits are also highly resistant to corrosion and wear, making them an excellent choice for projects where the drill bits will be exposed to moisture or harsh environments.

What are spade drill bits, and how are they different from other drill bits?

Spade drill bits are a type of drill bit that features a flat, wide, and straight cutting edge. This design allows them to create larger or wider holes in materials, such as wood or drywall, quickly and efficiently. Unlike other drill bits, which have a conical or pointy tip, spade drill bits have a blunt end that is designed to be used in conjunction with a guide hole or pilot hole, which is already drilled into the material.

One major advantage of spade drill bits is their ability to minimize the risk of splitting or tearing the material being drilled. By using the spade drill bit in combination with a pilot hole, you can ensure that the hole is drilled through the material in a controlled and steady manner, reducing the likelihood of any damage or unexpected outcomes.

What are step drill bits, and how do they work?

Step drill bits are a type of drill bit that is designed to create a hole with a stepped or graduated diameter. They are commonly used to create holes for screws or fasteners, where a smaller pilot hole is drilled followed by a larger hole that matches the size of the fastener. Step drill bits are available in various sizes and configurations, with multiple steps or gradations, depending on the desired hole size.

To use a step drill bit, you must first create a pilot hole using a small drill bit. This pilot hole should be slightly smaller than the first step of the step drill bit. Once the pilot hole is drilled, you can then insert the step drill bit into the hole and begin drilling through it. As you drill, the bit will expand and enlarge the hole according to its pre-defined steps, ensuring that the final hole is the correct size for the fastener being used.

What is the best way to sharpen my stainless steel drill bits?

Stainless steel drill bits can be sharpened using a variety of tools and methods, depending on the severity of the dullness and the desired sharpness. For minor dullness or slight sharpening, you can use a high-grit sandpaper (around 400 to 600 grit) to gently smooth out the edges of the drill bit and remove any small burrs or imperfections.

For more advanced sharpening, you can use specialized drill bit sharpeners, which are designed specifically for this purpose. These sharpeners typically consist of a series of carbide or diamond-coated grinding surfaces that can be adjusted to the appropriate angle and shape for your drill bit. By using a drill bit sharpener, you can restore the sharpness of your stainless steel drill bits to their factory-fresh condition, ensuring optimal performance for your drilling tasks.

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