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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Shank Type Shank Type |
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| Round | Quick-Change Hex |
Length Class Length Class |
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 | Jobbers' Length |
 | Short Length |
Material Material |
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Finish Finish |
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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 |
Individual/Set Individual/Set |
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Flute Direction Flute Direction |
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| Right Hand |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Specifications Met Specifications Met |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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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.
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Wire Gauge—Parabolic Spiral Flute | |||||||||
Black-Oxide High-Speed Steel | |||||||||
| 41 ga | 0.096" | 2 3/8" | 1.2" | Round | 0.096" | Split | Steel, Iron, Stainless Steel | 00000000 | 00000 |
| 40 ga | 0.098" | 2 3/8" | 1.2" | Round | 0.098" | Split | Steel, Iron, Stainless Steel | 00000000 | 0000 |
| 39 ga | 0.0995" | 2 3/8" | 1.2" | Round | 0.0995" | Split | Steel, Iron, Stainless Steel | 00000000 | 0000 |
| 38 ga | 0.1015" | 2 1/2" | 1.2" | Round | 0.1015" | Split | Steel, Iron, Stainless Steel | 00000000 | 0000 |
| 37 ga | 0.104" | 2 1/2" | 1.2" | Round | 0.104" | Split | Steel, Iron, Stainless Steel | 00000000 | 0000 |
| 36 ga | 0.1065" | 2 1/2" | 1.2" | Round | 0.1065" | Split | Steel, Iron, Stainless Steel | 00000000 | 0000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
| 41 ga | 0.096" | 2 3/8" | 1.2" | Round | 0.096" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 |
| 40 ga | 0.098" | 2 3/8" | 1.2" | Round | 0.098" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 |
| 39 ga | 0.0995" | 2 3/8" | 1.2" | Round | 0.0995" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 |
| 38 ga | 0.1015" | 2 1/2" | 1.2" | Round | 0.1015" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 |
| 37 ga | 0.104" | 2 1/2" | 1.2" | Round | 0.104" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 |
| 36 ga | 0.1065" | 2 1/2" | 1.2" | Round | 0.1065" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 |
Uncoated High-Speed Steel | |||||||||
| 41 ga | 0.096" | 2 3/8" | 1.2" | Round | 0.096" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 40 ga | 0.098" | 2 3/8" | 1.2" | Round | 0.098" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000 |
| 39 ga | 0.0995" | 2 3/8" | 1.2" | Round | 0.0995" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 38 ga | 0.1015" | 2 1/2" | 1.2" | Round | 0.1015" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 37 ga | 0.104" | 2 1/2" | 1.2" | Round | 0.104" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 36 ga | 0.1065" | 2 1/2" | 1.2" | Round | 0.1065" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
Short-Flute Cobalt Steel Drill Bits
The short flutes on these jobbers'-length bits provide increased rigidity for drilling straighter holes. 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. 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 | Specifications Met | Each | |
Inch | ||||||||||
Black-Oxide Cobalt Steel | ||||||||||
| 21/64" | 0.3281" | 4 5/8" | 1.2" | Round | 21/64" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium | NAS907 Type D | 00000000 | 000000 |
Short-Length Cobalt Steel Drill Bits
Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'-length drill bits. 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.
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 | For Use On | Each | |
Letter | |||||||||
Uncoated Cobalt Steel | |||||||||
| P | 0.323" | 3" | 1.2" | Round | 0.323" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 000000000 | 00000 |
Short-Length Carbide-Tipped Drill Bits
Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than standard-length drill bits. Made of carbide-tipped steel, which has better wear resistance than high-speed steel and cobalt steel, they maintain a sharper, harder edge at high temperatures for excellent performance on abrasive material, such as plastic. Because they aren’t as brittle as solid carbide bits, they can be used in less rigid setups, such as a hand-held drill.
Drill bits with a split point keep centered without a pilot hole.
Drill bits with 135° point angle produce smaller chips than 118° point to prevent clogging.
For technical drawings and 3-D models, click on a part number.
Hex-Shank Drill Bits
Insert these bits directly into power screwdrivers, impact drivers, and other tools that accept 1/4" hex shanks. A split point keeps the bit centered without a pilot hole.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than 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—Jobbers' Length | |||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
| 5/32" | 0.1563" | 2 7/8" | 1.2" | Quick-Change Hex | 1/4" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
Inch—Short Length | |||||||||
Black-Oxide High-Speed Steel | |||||||||
| 15/64" | 0.2344" | 3 3/16" | 1.2" | Quick-Change Hex | 1/4" | Split | Steel, Iron, Stainless Steel | 00000000 | 0000 |