System of Measurement System of Measurement |
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For Use On For Use On |
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Length Class Length Class |
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![]() | Jobbers' Length |
Material Material |
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Flute Direction Flute Direction |
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Right Hand |
Shank Type Shank Type |
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![]() | Round |
Individual/Set Individual/Set |
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Maximum Drilling Depth Maximum Drilling Depth | Show |
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Maximum Drilling Depth Maximum Drilling Depth | Hide |
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Bit Style Bit Style |
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![]() | Spiral Flute |
![]() | Parabolic Spiral Flute |
![]() | Straight Flute |
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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For Maximum Hardness For Maximum Hardness |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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Drill Bits



These jobbers'-length bits have the rigidity and length required for most applications.
Black-oxide and black-and-gold-oxide drill bits produce less friction than uncoated drill bits.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and oxide-coated drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | Each | |||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Metric | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
5.5 mm | 0.2165" | 93mm | 46mm | Round | 5.5mm | Standard | DIN 338 | Steel, Iron, Stainless Steel | 0000000 | 00000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
5.5 mm | 0.2165" | 93mm | 46mm | Round | 5.5mm | Standard | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000 |
Chip-Clearing Drill Bits


These jobbers'-length bits have the rigidity and length required for most applications. The flutes are designed to lift chips out of the hole, reducing clogging and improving coolant flow.
Parabolic spiral flute drill bits have wider flutes for more efficient chip evacuation than spiral-flute bits.
Black-oxide drill bits produce less friction than uncoated drill bits.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Specifications Met | Each | |
Metric—Parabolic Spiral Flute | ||||||||||
Uncoated High-Speed Steel | ||||||||||
5.5 mm | 0.2165" | 93mm | 46mm | Round | 5.5mm | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | DIN 338 | 0000000 | 00000 |
Metric—Spiral Flute | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
5.5 mm | 0.2165" | 93mm | 46mm | Round | 5.5mm | Split | Steel, Iron, Stainless Steel | DIN 338 | 00000000 | 0000 |
Cobalt Steel Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications. Made of cobalt steel, which has better heat and wear resistance than high-speed steel, they can run up to 25% faster and have a longer tool life.
Gold-oxide drill bits produce less friction than uncoated drill bits.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | Each | |||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Metric | ||||||||||
Gold-Oxide Cobalt Steel | ||||||||||
5.5 mm | 0.2165" | 93mm | 46mm | Round | 5.5mm | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
Carbide-Tipped Drill Bits for Hardened Steel

The straight flutes and notched point withstand the heavy pressure necessary to penetrate hard steel. These carbide-tipped bits maintain their sharp edges when drilling abrasive material. Because they aren’t as brittle as solid carbide bits, they can be used in less rigid setups, such as a hand-held drill. They are jobbers' length and have the rigidity and length required for most hand-held drilling and machine tool applications.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Max. Hardness | Each | |
Metric | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
11.5 mm | 0.4528" | 146mm | 46mm | Round | 11.5mm | Notched | Rockwell C60 | 0000000 | 000000 |