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10 Best Metal Drill Bits 2025 in the United States

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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)

The DEWALT 21-Piece Drill Bit Set (DWA1181) is a versatile choice for those needing to drill through a variety of materials such as metal, wood, plastic, PVC, and fiberglass. Its black oxide coating is a notable feature, providing resistance against corrosion and enhancing the longevity of the bits. The 135-degree split point design ensures that the bits start drilling on contact, reducing the chances of slipping on hard surfaces, which is particularly useful for precision work.

Additionally, the 31-degree helix and parabolic flute design improve chip ejection and reduce excessive drilling aggressiveness, making it easier to drill deeper holes without clogging or material buildup. However, while this set is well-rounded and durable, it may not be the best option for those who require specialized drill bits for very specific materials or high-precision industrial tasks.

For DIY enthusiasts and general-purpose drilling, this set offers excellent performance and durability.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Coating
The black oxide coating provides added durability and a longer lifespan.
Size
The 1/2 inch drill bit fits my 3/8 drill because the large bits have reduced shanks.
Point Angle
The 135-degree split point design ensures precise starts, reducing the risk of bit walking.
Flute Design
The 31-degree helix helps with efficient chip removal, keeping the drilling process smooth and quick.
#2

DEWALT Titanium Nitride Coated Drill Bit Set, Pilot Point, 21-Piece (DW1361)

The DEWALT Titanium Nitride Coated Drill Bit Set is a solid choice for anyone needing reliable drill bits for various materials, including metal, plastic, and wood. The set includes 21 pieces, ranging from 1/16-inch to 1/2-inch sizes, catering to a wide array of drilling tasks. One of its standout features is the Titanium Nitride coating, which enhances durability and extends the life of the bits, making them a great investment. The Pilot Point design allows for cleaner holes and starts on contact, reducing the chances of wandering, which can be particularly helpful for DIY enthusiasts and professionals alike.

Another advantage is the tapered web design, which provides extra strength and helps minimize breakage during use. This is especially beneficial for users who frequently drill into tougher materials. The no-spin shank is also a thoughtful feature that ensures better grip and easier handling.

There are a few considerations to keep in mind. While the set covers a range of sizes, it may not include all the very small sizes needed for specialized tasks. Additionally, the plastic case, while sturdy, may not be as durable as a metal one, which some users prefer for long-term storage. This drill bit set is well-suited for both home improvement projects and professional needs, offering a blend of quality and versatility that most users will find beneficial.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Coating
The titanium coating makes the bits quite durable.
Flute Design
The Pilot Point design successfully prevents the drill bit from 'walking' when you first start drilling.
#3

DEWALT Drill Bit Set, 14-Piece, 135 Degree Split Point, For Plastic, Wood and Metal (DWA1184)

The DEWALT Drill Bit Set is a solid choice for anyone looking to handle a variety of materials, including plastic, wood, and metal. Its 135-degree split point tip design is particularly beneficial as it minimizes walking and allows for accurate drilling. This feature is great for users who may struggle with positioning, especially on harder surfaces.

Made from high-speed steel, these bits are built for durability and can withstand the demands of tough tasks. The tapered web design enhances the bits' strength, helping to resist breakage, which is a common concern with drill bits. Additionally, the black and gold coating not only gives them a sleek look but also serves a practical purpose by protecting against rust and wear over time.

The 3-flats shank design is noteworthy as it reduces spin-out in the chuck, providing a more secure grip during use. This is a valuable feature for anyone who has had issues with bits slipping while drilling. Markings on the shank make it easy to identify sizes quickly, saving time during projects. This set is quite versatile, though those looking for a more extensive range might need to purchase additional bits separately.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Size
A variety of sizes from 1/16” to 3/8” makes the set incredibly useful for various tasks.
Point Angle
The 135-degree split point design prevents walking and ensures precise, clean starts every time.

Buying Guide for the Best Metal Drill Bits

Choosing the right metal drill bit can make a significant difference in the quality and efficiency of your drilling projects. Metal drill bits are specifically designed to cut through metal surfaces, and selecting the right one involves understanding various specifications and how they align with your needs. Here are the key specifications to consider when picking metal drill bits and how to navigate them.
MaterialThe material of the drill bit is crucial because it determines the bit's durability and effectiveness in cutting through metal. Common materials include high-speed steel (HSS), cobalt, and carbide. HSS bits are suitable for general-purpose drilling and are more affordable. Cobalt bits are more durable and can handle harder metals, making them ideal for tougher jobs. Carbide bits are the hardest and most durable, perfect for heavy-duty and high-precision tasks. Choose HSS for light to moderate tasks, cobalt for tougher metals, and carbide for the most demanding applications.
CoatingCoatings on drill bits enhance their performance and longevity. Common coatings include black oxide, titanium, and diamond. Black oxide increases the bit's resistance to rust and wear, making it suitable for general use. Titanium coatings reduce friction and heat buildup, extending the bit's life and making it ideal for frequent use. Diamond coatings are the hardest and provide superior cutting performance, especially for very hard metals. For occasional use, black oxide is sufficient. For frequent drilling, titanium is a good choice, and for the hardest metals, diamond-coated bits are the best.
SizeThe size of the drill bit, including its diameter and length, determines the size of the hole you can drill and the depth you can reach. Drill bits come in various diameters, typically measured in millimeters or inches. Smaller diameters are suitable for precision work and smaller holes, while larger diameters are used for bigger holes. The length of the bit affects how deep you can drill. Choose the size based on the specific requirements of your project, ensuring the diameter matches the hole size you need and the length is sufficient for the depth you want to achieve.
Point AngleThe point angle of a drill bit affects how it cuts into the metal. Common point angles are 118 degrees and 135 degrees. A 118-degree point angle is standard and works well for softer metals, providing a good balance between cutting speed and control. A 135-degree point angle is flatter and more suitable for harder metals, offering better precision and reducing the risk of the bit wandering. For general-purpose drilling, a 118-degree angle is usually sufficient. For harder metals or more precise work, opt for a 135-degree angle.
Flute DesignThe flute design of a drill bit refers to the grooves that spiral up the bit, helping to remove chips and debris from the hole. Standard flutes are suitable for most drilling tasks, providing a good balance of chip removal and strength. Parabolic flutes are deeper and more efficient at removing chips, making them ideal for deeper holes and softer metals. For general use, standard flutes are adequate. If you are drilling deeper holes or working with softer metals, consider bits with parabolic flutes for better performance.

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