System of Measurement System of Measurement |
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Decimal Size Equivalent Decimal Size Equivalent |
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For Use On For Use On |
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Length Class Length Class |
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| Jobbers' Length |
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| Short Length |
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| Extended Length |
Finish Finish |
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Material Material |
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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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Flute Direction Flute Direction |
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Individual/Set Individual/Set |
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Bit Style Bit Style |
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 | Spiral Flute |
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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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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Thread Size Thread Size |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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Short-Length Drill Bits
Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'- and maintenance-length drill bits.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and black-oxide 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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Wire Gauge | ||||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
| 22 ga | 0.157" | 2 1/8" | 1.13" | Round | 0.157" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
| 21 ga | 0.159" | 2 1/8" | 1.13" | Round | 0.159" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 20 ga | 0.161" | 2 1/8" | 1.13" | Round | 0.161" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 19 ga | 0.166" | 2 1/8" | 1.13" | Round | 0.166" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 18 ga | 0.1695" | 2 1/8" | 1.13" | Round | 0.1695" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
Uncoated High-Speed Steel | ||||||||||
| 22 ga | 0.157" | 2 1/8" | 1.13" | Round | 0.157" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 21 ga | 0.159" | 2 1/8" | 1.13" | Round | 0.159" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 20 ga | 0.161" | 2 1/8" | 1.13" | Round | 0.161" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 19 ga | 0.166" | 2 1/8" | 1.13" | Round | 0.166" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 18 ga | 0.1695" | 2 1/8" | 1.13" | Round | 0.1695" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
Extended-Length Drill Bits
Access hard-to-reach spots and drill deep holes.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and black-oxide drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
| 3/64" | 0.0469" | 2 1/4" | 1.13" | Round | 3/64" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 00000 |
Wire Gauge | |||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
| 60 ga | 0.04" | 2 1/4" | 1.13" | Round | 0.04" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 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.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds 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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Wire Gauge | ||||||||||
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
| 46 ga | 0.081" | 2 1/8" | 1.13" | Round | 0.081" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
| 45 ga | 0.082" | 2 1/8" | 1.13" | Round | 0.082" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 0000 |
| 44 ga | 0.086" | 2 1/8" | 1.13" | Round | 0.086" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 0000 |
Chip-Clearing Cobalt Steel Drill Bits
The parabolic spiral flutes lift chips out of the hole, reducing clogging and improving coolant flow. With better heat and wear resistance than high-speed steel, these cobalt steel bits can run up to 25% faster and have a longer tool life. All are jobbers’ length so they have the rigidity and length required for most applications. A split point keeps the bit centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Wire Gauge—Parabolic Spiral Flute | |||||||||
Uncoated Cobalt Steel | |||||||||
| 46 ga | 0.081" | 2 1/8" | 1.13" | Round | 0.081" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
| 45 ga | 0.082" | 2 1/8" | 1.13" | Round | 0.082" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 0000 |
| 44 ga | 0.086" | 2 1/8" | 1.13" | Round | 0.086" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 0000 |
Threaded-Shank Drill Bits
All have a 1/4"-28 threaded shank which installs directly into the threaded spindle on a compatible drill. A split point keeps the bit centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Thread Size | Point Style | Specifications Met | For Use On | Each | |
Inch—Short Length | |||||||||||
Black-Oxide High-Speed Steel | |||||||||||
| 5/32" | 0.1563" | 2 3/8" | 1.13" | Threaded | 1/4" | 1/4"-28 | Split | NAS965 Type B | Steel, Iron, Stainless Steel | 0000000 | 00000 |
Carbide Drill Bits for Stainless Steel and Nickel
Harder, stronger, and more wear resistant than cobalt steel, solid-carbide bits maintain their sharp edges longer. They require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications. All are titanium nitride (TiN) coated for longer life and higher drilling speeds. They are short length, also known as screw machine and stub length, which provides maximum rigidity for drilling straighter holes than standard-length drill bits. The split point keeps the bit 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 | Each | |
Inch | ||||||||
Titanium-Nitride (TiN) Coated Carbide | ||||||||
| 3/8" | 0.375" | 3 1/4" | 1.13" | Round | 3/8" | Split | 00000000 | 0000000 |