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Drill Bits For Aluminum And Steel

Find drill bits for aluminum and steel suited to your metal-drilling projects. Compare options by bit size, material and compatibility with the metal you’re drilling, and check each product’s specifications to match your drill and the hole diameter you need.

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  1. Irwin - Unibit #9 X 6 L High Speed Steel Step Drill Bit Square Shank 1 pc

    SKU: J78G5L26ZV

    Product Description

    A high-speed steel step drill bit with a square shank, offering extended durability for tough jobs.
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    Your price for this item is $83.51

  2. VEVOR - Drill Bit Set, 70 Pieces Drill and Driver Bit Set, Screwdriver Bit Set Suit Wood Metal Cement Drilling and Screw Driving - Black

    SKU: JJGHKKZ97P

    Product Description

    A versatile black drill and driver bit set with 70 high-strength pieces for wood, metal, and cement.
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    Your price for this item is $28.90

  3. Irwin - High Speed Steel Letter U Drill Bit Straight Shank 1 pc

    SKU: J3Z2TYQL42

    Product Description

    A durable high-speed steel drill bit offering excellent strength, heat resistance, and wear resistance for general use.
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    Your price for this item is $26.03

  4. Irwin - 4 1/8 L High Speed Steel Letter I Drill Bit Straight Shank 1 pk

    SKU: J3Z2TYQPS7

    Product Description

    A high speed steel drill bit offering strength, heat resistance, and wear resistance for general purpose use.
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    Your price for this item is $22.42

  5. Irwin - 4 3/4 L High Speed Steel Letter Q Drill Bit Straight Shank 1 pk

    SKU: J3Z2TYQLK5

    Product Description

    A high-speed steel drill bit with straight shank offers strength, heat resistance, and wear resistance.
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    Your price for this item is $24.58

  6. Irwin - 4 1/8 L High Speed Steel Letter J Drill Bit Straight Shank 1 pk

    SKU: J3Z2TYQPPS

    Product Description

    A high speed steel drill bit with straight shank, offering strength, heat, and wear resistance.
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    Your price for this item is $22.42

  7. Irwin - 4 1/8 L High Speed Steel Letter F Drill Bit Straight Shank 1 pk

    SKU: J3Z2TYQPPW

    Product Description

    A high speed steel drill bit offering strength, heat resistance, and wear resistance for general purpose use.
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    Your price for this item is $21.67

  8. Irwin - High Speed Steel Letter R Drill Bit Straight Shank 1 pk

    SKU: J3Z2TYQLZR

    Product Description

    A high-speed steel drill bit offering strength, heat resistance, and wear resistance for general-purpose drilling.
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    Your price for this item is $25.30

  9. Irwin - High Speed Steel Letter T Drill Bit Straight Shank 1 pk

    SKU: J3Z2TYQLZ4

    Product Description

    A high-speed steel drill bit offering excellent strength, heat resistance, and wear resistance for general use.
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    Your price for this item is $26.03

  10. Steel Grip - Carbon Steel Drill Bit Set 12 pc

    SKU: J363J8GR2G

    Product Description

    A versatile 12-piece set of durable carbon steel drill bits for various power tool applications.
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    Your price for this item is $26.54

  11. Steel Grip - High Speed Steel Drill and Driver Bit Set Hex Shank 18 pc

    SKU: J363J8GR24

    Product Description

    An 18-piece high-speed steel drill and driver bit set with hex shank for versatile power tool use.
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    Your price for this item is $25.90

  12. Steel Grip - Titanium Drill Bit Set Straight Shank 17 pc

    SKU: J363J8GRXZ

    Product Description

    A 17-piece titanium drill bit set with straight shanks, ideal for various power tool applications.
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    Your price for this item is $24.56
    Save $1
    The previous price was $25.96

  13. VEVOR - Drill Bit Set,101 Pieces Drill and Driver Bit Set, Screwdriver Bit Set Suit Wood Metal Cement Drilling and Screw Driving - Black

    SKU: JJGHKKZ9JY

    Product Description

    A versatile black drill and driver bit set with 101 high-strength pieces for wood, metal, and cement.
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    Your price for this item is $28.90

  14. VEVOR - Drill Bit Set, 246 Pieces Drill and Driver Bit Set, Screwdriver Bit Set Suit Wood Metal Cement Drilling, Screw Driving - Black

    SKU: JJGHKKZ9JC

    Product Description

    A comprehensive black drill and driver bit set with high-strength bits for wood, metal, and cement projects.
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    Your price for this item is $46.90

  15. VEVOR - Drill Bit Set,100 Pieces Drill and Driver Bit Set, Screwdriver Bit Set Suit Wood Metal Cement Drilling and Screw Driving - Black

    SKU: JJGHKKZ9CG

    Product Description

    A comprehensive black drill and driver bit set with high-strength bits for wood, metal, and cement projects.
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    Your price for this item is $29.99

  16. VEVOR - Step Drill Bit Set,1/8 - 7/8 inch,3 Pieces Step Drill Bits,1/4 inch Hex Shank,TiAlN Coating Cobalt HSS High Speed Steel - Black

    SKU: JJGHKZPHL9

    Product Description

    A durable black step drill bit set made of cobalt HSS with TiAlN coating for smooth, precise drilling.
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    Your price for this item is $35.90
    Save $9
    The previous price was $44.99

  17. VEVOR - Core Drill Bit, 3-1/2 inch Diameter, 14 inch Drilling Depth, 1-1/4 in-7 Internal Thread, High-Precision Welding - Black

    SKU: JJGHKKVYS3

    Product Description

    A black steel core drill bit with high-precision welding, ideal for reinforced concrete and masonry applications.
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    Your price for this item is $34.99
    Save $4
    The previous price was $38.99

  18. VEVOR - Core Drill Bit, 2-1/2 inch Diameter, 14 inch Drilling Depth, 1-1/4 in-7 Internal Thread, High-Precision Welding - Black

    SKU: JJGHKKVYYV

    Product Description

    A black steel core drill bit with high-precision welding for clean drilling in concrete and brick.
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    Your price for this item is $29.99
    Save $8
    The previous price was $37.99

  19. VEVOR - Core Drill Bit, 4-1/2 inch Diameter, 14 inch Drilling Depth, 1-1/4 in-7 Internal Thread, High-Precision Welding - Black

    SKU: JJGHKKVYYT

    Product Description

    A black steel core drill bit with high-precision welding for clean drilling in concrete and masonry.
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    Your price for this item is $43.99
    Save $6
    The previous price was $49.99

  20. VEVOR - Core Drill Bit, 3 inch Diameter, 14 inch Drilling Depth, 1-1/4 in-7 Internal Thread, High-Precision Welding Technology - Black

    SKU: JJGHKKVYY7

    Product Description

    A black steel core drill bit with high-precision welding, ideal for concrete, brick, and foam block.
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    Your price for this item is $31.99
    Save $8
    The previous price was $39.99

  21. VEVOR - Core Drill Bit, 5 inch Diameter, 14 inch Drilling Depth, 1-1/4 in-7 Internal Thread, High-Precision Welding Technology - Black

    SKU: JJGHKKVYLK

    Product Description

    A black steel core drill bit with high-precision welding, ideal for concrete and masonry applications.
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    Your price for this item is $47.99
    Save $12
    The previous price was $59.99

  22. VEVOR - Core Drill Bit, 6 Pieces, 1/2/3/4/5/6 inch Diameter, 14 inch Drilling Depth, 1-1/4 in-7 Internal Thread - Black

    SKU: JJGHKKVYL9

    Product Description

    A set of six black steel core drill bits with universal thread for fast, clean drilling in masonry.
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    Your price for this item is $198.90
    Save $50
    The previous price was $248.99

  23. VEVOR - Core Drill Bit, 4 inch Diameter, 14 inch Drilling Depth, 1-1/4 in-7 Internal Thread, High-Precision Welding Technology - Black

    SKU: JJGHKKVYPF

    Product Description

    A black steel core drill bit with high-precision welding, ideal for concrete, brick, and foam block drilling.
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    Your price for this item is $39.99
    Save $10
    The previous price was $49.99

  24. VEVOR - Core Drill Bit, 8 inch Diameter, 14 inch Drilling Depth, 1-1/4 in-7 Internal Thread, High-Precision Welding Technology - Black

    SKU: JJGHKKVYP8

    Product Description

    A black steel core drill bit with high-precision welding, ideal for concrete, brick, and foam block.
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    Your price for this item is $87.99
    Save $22
    The previous price was $109.99
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Choosing the right drill bits for aluminum and steel starts with matching the bit material, cutting geometry, and coating to the metal you plan to drill. Aluminum is relatively soft, but it can cling to cutting edges and clog flutes, so sharp high-speed steel (HSS) drill bits with polished flutes are a practical choice for many aluminum drilling projects. Bits designed specifically for aluminum help move chips out of the hole efficiently, improving hole quality and reducing buildup. Standard HSS bits can also handle occasional drilling in mild steel, while cobalt-alloy HSS drill bits offer greater heat resistance for tougher jobs, including drilling stainless steel. Unlike a surface coating, the cobalt is part of the bit’s alloy, so its heat-resistant properties remain after proper sharpening. Titanium nitride-coated drill bits can help reduce friction and extend cutting life in suitable applications, but performance still depends on the underlying bit material and the metal being drilled. For thin aluminum panels or steel sheet metal, a step drill bit can produce several hole sizes with one tool, provided you stay within its rated material thickness and compatibility. Good drilling technique is just as important as selecting the best drill bits for metal. Secure aluminum or steel workpieces with clamps or a vise, wear eye protection, and use a center punch where appropriate to help keep the bit from wandering. A split-point drill bit can also improve starting accuracy, while larger holes may benefit from a pilot hole sized according to the bit manufacturer’s guidance. Steel generally requires lower drilling speeds than aluminum, and larger-diameter bits need slower rotation than smaller ones; consult the manufacturer’s speed recommendations rather than using one setting for every material. Apply steady feed pressure and use a cutting fluid recommended for the specific metal to reduce friction, manage heat, and support a cleaner finish. Clear chips as needed without touching sharp swarf, and avoid forcing a dull bit, which can generate excess heat and damage the cutting edge. A variable-speed drill offers control for many household metalworking projects, while a drill press provides added stability and consistent alignment for precise holes. Whether you are comparing drill bit sets for aluminum, cobalt drill bits for steel, or step bits for sheet metal, prioritize material compatibility, the required hole diameter, and a shank that fits your drill’s chuck.

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FAQ

Common materials include high-speed steel (HSS), cobalt-alloy high-speed steel, and solid carbide. Product descriptions typically identify the bit material separately from any surface coating or finish.

Cobalt drill bits are generally made from high-speed steel alloyed with cobalt, rather than pure cobalt. Labels such as M35 and M42 identify different alloy grades. The cobalt is part of the bit material, not simply a surface coating.

Common coatings and finishes include black oxide, titanium nitride (TiN), and titanium aluminum nitride (TiAlN). Bright-finish bits generally have no added coating. A coating name describes the surface treatment, not the underlying material.

Metal drill bits commonly have round, hex, or three-flat shanks. The shank is the portion held by the drill chuck or bit holder. Round shanks are cylindrical, hex shanks have six sides, and three-flat shanks have three flattened surfaces.

Drill bit sets often come in indexed cases with labeled slots for individual bits. Some cases have removable holders or separate compartments. Packaging may also identify the bit material, coating, and intended material categories, such as metal, wood, or masonry.