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Drill Bits
Cut holes in a variety of metals, from the softest aluminum to the hardest steel.
High-Speed Steel Short Length
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Round Shank |
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Standard |
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Split |
Our shortest high-speed steel bits, these are the most rigid for drilling the straightest holes. They're also good for tight spaces where longer bits can't fit. Also known as screw-machine and stub-length bits.
Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.
Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.
Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.
Standard Point—Good for general purpose drilling. You’ll need to make a pilot hole to center the bit.
Split Point—Starts cutting on contact so you don’t need a pilot hole. The point also keeps the bit centered for straight and accurate holes, even with a portable drill.
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Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Flute Type | Type | Size, mm | Drill Bit Point Type | No. of Flutes | Specs. Met | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Black Oxide | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Metric | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 4.0 | 0.1575" | 55 | 13.9 | Spiral | Round | 4 | Split | 2 | DIN 1897 | 00000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 4.1 | 0.1614" | 55 | 10.2 | Spiral | Round | 4.1 | Standard | 2 | DIN 1897 | 00000000 | 0000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 4.2 | 0.1654" | 55 | 13.5 | Spiral | Round | 4.2 | Split | 2 | DIN 1897 | 00000000 | 0000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Titanium Nitride (TiN) Coated | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 4.1 | 0.1614" | 55 | 10.2 | Spiral | Round | 4.1 | Standard | 2 | DIN 1897 | 0000000 | 0000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Smooth-Finish Drill Bits
With more cutting edges than other drill bits, these cut continuously and consistently for a smoother finish. They also stay centered to produce holes that are straighter and more accurate. However, since there’s less space between the cutting edges, they don’t clear chips as quickly.
Carbide Jobbers' Length
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Spiral Flute Round Shank |
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Split |
The hardest and most wear-resistant drill bits you can buy in a length that's rigid enough for most applications. These bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
Uncoated—Excellent for a range of metals, they perform best when used on steel, aluminum, brass, and bronze.
Round Shank—The most common shank type fits in a drill press chuck.
Split Point—Starts cutting on contact so you don’t need a pilot hole. The point also keeps the bit centered for straight and accurate holes, even with a portable drill.
