We Use CookiesWe use cookies to enhance the security, performance, functionality and for analytical and promotional activities. By continuing to browse this site you are agreeing to our privacy policy

10 Best Quality Drill Bits For Stainless Steel 2025 in the United States

How do we rank products for you?

Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

headphones-stars

Our Top Picks

#1

Winner

DEWALT Drill Bit Set, 21-Piece, 135 Degree Split Point, 31 Degree Helix, Black Oxide Coated, For Plastic, Wood and Metal (DWA1181)

Rating
9.9
Chosen by1,209
Coating
Tip Design
Size and Set

Most important from
4927 reviews

Coating
The black oxide coating adds durability and extends the lifespan of each bit.
Tip Design
The 135-degree split point design ensures precise starts and reduces bit walking on tough surfaces.
Size and Set
The set's wide range of sizes makes it incredibly versatile for various DIY projects.
Shank Design
Despite the large 1/2 inch drill bit, it fits a 3/8 drill due to the reduced shank at the bottom.

The DEWALT 21-piece Drill Bit Set (DWA1181) is a versatile option for various materials, including stainless steel. The black oxide coating enhances durability and resistance to corrosion, which is crucial for prolonged use and longevity. The 135-degree split-point tips are designed to start drilling on contact, reducing walking on tough surfaces like stainless steel. This feature is particularly beneficial for precision work.

The parabolic flute design helps with efficient chip ejection, crucial when drilling harder materials, ensuring a smoother drilling process. However, the black oxide coating, while durable, may not offer the same level of performance as titanium or cobalt coatings specifically designed for stainless steel. Also, the set includes a straight shank design, which provides a standard grip but might not offer the secure fit of a hex shank, especially in high-torque applications.

The 21-piece set offers a range of sizes, making it suitable for various tasks around the home or workshop. If you’re looking for a well-rounded set for general-purpose drilling, including occasional stainless steel, this DEWALT set is a reliable choice. However, for frequent and heavy-duty stainless steel drilling, you might want to consider bits with more specialized coatings like titanium or cobalt for optimal performance.

Rating
9.9
Chosen by1,209
Coating
Tip Design
Size and Set

Most important from
4927 reviews

Coating
The black oxide coating adds durability and extends the lifespan of each bit.
Tip Design
The 135-degree split point design ensures precise starts and reduces bit walking on tough surfaces.
Size and Set
The set's wide range of sizes makes it incredibly versatile for various DIY projects.
Shank Design
Despite the large 1/2 inch drill bit, it fits a 3/8 drill due to the reduced shank at the bottom.
#2

BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

Rating
9.8
Material

Most important from
6300 reviews

Material
The M42 cobalt keeps the drill from getting too hot and acts as a 'lubricant', maintaining a sharp cutting edge and enhancing ease of use.

The BOSCH CO14B 14-Piece Assorted Set is designed specifically for drilling in tough materials like stainless steel, cast iron, and titanium, making it a solid choice for professionals and DIY enthusiasts alike. The drill bits are made from Cobalt M42 material, which is known for its durability and resistance to high heat, ensuring they can handle demanding tasks without losing effectiveness. The inclusion of a 3-flat shank design enhances grip in the chuck, preventing slippage during use, which is particularly important for precision work.

One of the standout features is the thick web-helix design that offers additional stability, allowing for better control and reduced breakage, especially in challenging materials. Additionally, the surface-hardened tip is engineered to penetrate tough and abrasive surfaces effectively.

The assortment includes a wide range of sizes from 1/16" to 1/2", catering to various drilling needs. As these bits are made in China, some users may have preferences regarding origin, but Bosch generally maintains a reputation for quality.

Rating
9.8
Material

Most important from
6300 reviews

Material
The M42 cobalt keeps the drill from getting too hot and acts as a 'lubricant', maintaining a sharp cutting edge and enhancing ease of use.
#3

MACXCOIP Cobalt Drill Bit Set, 29Pcs M35 High Speed Steel Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Metal Index Storage Box, 1/16"-1/2"

Rating
9.6
Material
Size and Set

Most important from
1691 reviews

Material
The M35 cobalt alloy cuts fine with a hand drill, though it's more brittle than regular HSS bits.
Size and Set
Great price and good quality, especially for those working with metric measurements.

The MACXCOIP Cobalt Drill Bit Set is designed to cater to various drilling needs, especially when working with stainless steel and other hard materials. With 29 different sizes ranging from 1/16" to 1/2", it offers great versatility, making it a solid choice for both professionals and DIY enthusiasts. The M35 cobalt construction enhances durability and sharpness, allowing users to make precise cuts without excessive wear and tear. The 135-degree point tip and twist design are excellent features, as they improve cutting efficiency and reduce the chances of the bit walking off during use.

One of the standout attributes of this set is its ability to handle not just stainless steel but also cast iron, copper, aluminum, and even wood, which broadens its usability. The drill bits are also nicely housed in a metal index storage box, making organization and access easy, a thoughtful touch for those who appreciate keeping their tools tidy.

There are a couple of points to consider. While the cobalt material is robust, it can be more brittle than other types of steel, which means extra care is needed to avoid breaking bits when drilling harder materials. Additionally, some users might find that the bits can heat up quickly if not used with proper technique, so it's advisable to use cutting fluid or a slower drilling speed to mitigate this. The product is manufactured in China.

Rating
9.6
Material
Size and Set

Most important from
1691 reviews

Material
The M35 cobalt alloy cuts fine with a hand drill, though it's more brittle than regular HSS bits.
Size and Set
Great price and good quality, especially for those working with metric measurements.

Buying Guide for the Best Quality Drill Bits For Stainless Steel

Choosing the right drill bits for stainless steel is crucial to ensure efficient and precise drilling. Stainless steel is a tough material, and using the wrong drill bit can lead to poor performance, damage to the material, or even injury. To make the best choice, you need to understand the key specifications that determine the quality and suitability of drill bits for stainless steel. Here are the essential specs to consider and how to navigate them.
MaterialThe material of the drill bit is fundamental because it determines the bit's hardness and durability. For stainless steel, high-speed steel (HSS) is a common choice, but cobalt steel and carbide-tipped bits are even better. HSS is suitable for general use, cobalt steel offers better heat resistance and durability, and carbide-tipped bits are the most durable and can handle the toughest jobs. Choose HSS for occasional use, cobalt for frequent use, and carbide for heavy-duty, professional applications.
CoatingCoatings on drill bits reduce friction and increase the lifespan of the bit. Common coatings include black oxide, titanium, and diamond. Black oxide is good for general use and provides some corrosion resistance. Titanium coatings reduce friction and heat buildup, making them suitable for more demanding tasks. Diamond coatings are the most durable and are ideal for the toughest materials. For stainless steel, titanium or diamond coatings are recommended for their superior performance and longevity.
Tip DesignThe design of the drill bit tip affects how easily it can penetrate stainless steel. Split-point tips are excellent because they start drilling on contact and reduce walking, making them ideal for precise work. Standard chisel tips are less effective on hard materials like stainless steel. For the best results, look for drill bits with a split-point or a 135-degree angle tip, as these designs provide better control and efficiency.
Size and SetDrill bits come in various sizes, and sets can include a range of sizes. The size you need depends on the specific holes you need to drill. If you frequently work with different sizes, a set with a wide range of bits is useful. For occasional use, you might only need a few specific sizes. Consider the projects you plan to undertake and choose a set that covers those needs without unnecessary extras.
Shank DesignThe shank is the part of the drill bit that fits into the drill. Common designs include round, hex, and reduced shank. Hex shanks provide a better grip and are less likely to slip in the drill chuck, making them ideal for high-torque applications. Reduced shank bits allow for larger diameter bits to be used in standard drill chucks. Choose a shank design that matches your drill and the type of work you do. Hex shanks are generally a good choice for stainless steel.

FAQ

Most Popular Categories Right Now