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10 Best Metal Drill Bits 2025 in the United States
#1
Winner
IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)
The IRWIN Drill Bit Set, featuring 29 pieces made from M35 cobalt alloy steel, is a solid choice for those needing durability and performance in metal drilling. The cobalt construction ensures higher resistance to heat and abrasion, making these bits suitable for tougher materials. The set includes a range of sizes from 1/16 inch to 1/2 inch in 1/64 inch increments, offering versatility for various drilling needs. The 135-degree split point design minimizes walking, ensuring more precise drilling starts.
Rating
10.0
Chosen by1,293
Material
Most important from
1060 reviews
#2
DEWALT Drill Bit Set, 3-Flats Shank,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.
Rating
9.4
Size
Point Angle
Most important from
18537 reviews
#3
Milwaukee 48-89-9224 Step Bit 6-Piece Set (#1, 4, 6, 7, 8, 9)
The Milwaukee 48-89-9224 Step Bit 6-Piece Set offers a solid option for those needing step drill bits primarily for metals like aluminum, brass, copper, and steel, as well as plastics and wood. Made from alloy steel with a black oxide finish, these bits are designed to resist wear and corrosion, enhancing their durability. The black oxide coating also helps reduce friction and heat buildup during drilling, which is beneficial for clean and efficient cuts.
Rating
9.1
Material
Coating
Point Angle
Most important from
140 reviews
Top 10 Best Metal Drill Bits 2025 in the United States
Sponsored
#1
Winner
IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)
IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002)
Material: Cobalt
Size: 29pc Pro Case
Point Angle: 135 Degrees
Flute Design: Spiral
Chosen by 1293 this week
Sponsored
DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)
DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)
Material: High Speed Steel
Coating: black and gold
Size: 14 piece set
Point Angle: 135 Degrees
Flute Design: Spiral
Milwaukee 48-89-9224 Step Bit 6-Piece Set (#1, 4, 6, 7, 8, 9)
Milwaukee 48-89-9224 Step Bit 6-Piece Set (#1, 4, 6, 7, 8, 9)
Material: Alloy Steel
Coating: Black Oxide
Size: 6-Piece Set (#1,4,6,7,8,9)
Flute Design: Spiral
Milwaukee 29 Pc. Cobalt Red Helix Metal Drill Bit Set
Milwaukee 29 Pc. Cobalt Red Helix Metal Drill Bit Set
Material: Cobalt
Coating: Black Oxide
Size: 29 Pieces
Point Angle: 135°
Flute Design: Red Helix
Milwaukee Electric - Shockwave Impact Duty. RED Helix. Titanium Drill B
Milwaukee Electric - Shockwave Impact Duty. RED Helix. Titanium Drill B
Material: Metal
Coating: Titanium
Size: 1/4" hex shank
Flute Design: Thick tapered web
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Up to 15% off
DEWALT Titanium Nitride Coated Drill Bit Set, Pilot Point, 21-Piece (DW1361)
DEWALT Titanium Nitride Coated Drill Bit Set, Pilot Point, 21-Piece (DW1361)
Material: Titanium Nitride
Coating: Titanium Nitride
Size: 1/16-inch to 1/2-inch
Point Angle: 135 Degrees
Flute Design: Spiral
DEWALT Drill Bit Set, 21-Piece, 135 Degree Split Point, 31 Degree Helix, Black Oxide Coated, For Plastic, Wood and Metal (DWA1181)
DEWALT Drill Bit Set, 21-Piece, 135 Degree Split Point, 31 Degree Helix, Black Oxide Coated, For Plastic, Wood and Metal (DWA1181)
Material: Blend
Coating: Black oxide
Size: 8.75 x 1.38 x 8.75 in
Point Angle: 135 Degrees
Flute Design: Parabolic
Milwaukee 48-89-4680 18-Piece Shockwave Impact Duty Thunderbolt Titanium Drill Bit Set w/Anti-Walking 135 Degree Angled Tip and Storage Case
Milwaukee 48-89-4680 18-Piece Shockwave Impact Duty Thunderbolt Titanium Drill Bit Set w/Anti-Walking 135 Degree Angled Tip and Storage Case
Material: Titanium, Plastic
Coating: Titanium
Size: 1/16” to 3/8”
Flute Design: Parabolic
Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Metal Drill Bits 1/16"-3/8", with Plastic Index Storage Case
Sinyeenglon Cobalt Drill Bit Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Metal Drill Bits 1/16"-3/8", with Plastic Index Storage Case
Material: M35 cobalt steel
Coating: Gold oxide
Size: 1/16 to 3/8 inch
Point Angle: 135 degrees
#10
Irwin Tools IRWIN Drill Bit Set, Titanium Nitride Coated, 29-Piece (3018003)
Irwin Tools IRWIN Drill Bit Set, Titanium Nitride Coated, 29-Piece (3018003)
Material: High Speed Steel
Coating: Titanium Nitride
Size: 1/16" to 1/2" in increments
Point Angle: 135°
Flute Design: Spiral
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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.