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Decimal Size Equivalent Decimal Size Equivalent |
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Length Class Length Class |
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For Use On For Use On |
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Shank Type Shank Type |
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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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Maximum Drilling Depth Maximum Drilling Depth | Show |
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Maximum Drilling Depth Maximum Drilling Depth | Hide |
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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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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.
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Wire Gauge | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
| 50 ga. | 0.07" | 2" | 0.89" | Round | 0.07" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 00000 |
| 49 ga. | 0.073" | 2" | 0.89" | Round | 0.073" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 0000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
| 50 ga. | 0.07" | 2" | 0.89" | Round | 0.07" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 |
| 49 ga. | 0.073" | 2" | 0.89" | Round | 0.073" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 |
Uncoated High-Speed Steel | ||||||||||
| 50 ga. | 0.07" | 2" | 0.89" | Round | 0.07" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
| 49 ga. | 0.073" | 2" | 0.89" | Round | 0.073" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 |
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.
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 | Each | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Wire Gauge | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
| 10 ga. | 0.1935" | 2 1/4" | 0.89" | Round | 0.1935" | Split | ASME B94.11M | Steel, Iron, Stainless Steel | 00000000 | 00000 |
| 9 ga. | 0.196" | 2 1/4" | 0.89" | Round | 0.196" | Split | ASME B94.11M | Steel, Iron, Stainless Steel | 00000000 | 0000 |
Letter | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
| B | 0.238" | 2 1/2" | 0.89" | Round | 0.238" | Split | NAS907 Type C | Steel, Iron, Stainless Steel | 00000000 | 0000 |
| C | 0.242" | 2 1/2" | 0.89" | Round | 0.242" | Split | NAS907 Type C | Steel, Iron, Stainless Steel | 00000000 | 0000 |
Short-Flute Extended-Length Drill Bits
The short flutes on these bits provide increased rigidity for drilling straighter holes and the long length lets you access hard-to-reach spots.
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Max. Drilling Depth | Type | Size | Point Style | Specifications Met | For Use On | Each | |
6" Overall Lg. | |||||||||
Wire Gauge | |||||||||
Black-Oxide High-Speed Steel | |||||||||
| 50 ga. | 0.07" | 0.89" | Round | 0.07" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 0000000 | 00000 |
| 49 ga. | 0.073" | 0.89" | Round | 0.073" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 0000000 | 0000 |
12" Overall Lg. | |||||||||
Wire Gauge | |||||||||
Black-Oxide High-Speed Steel | |||||||||
| 50 ga. | 0.07" | 0.89" | Round | 0.07" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 00000 |
| 49 ga. | 0.073" | 0.89" | Round | 0.073" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 00000 |
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.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Wire Gauge—Spiral Flute | |||||||||
Uncoated High-Speed Steel | |||||||||
| 50 ga. | 0.07" | 2" | 0.89" | Round | 0.07" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
| 49 ga. | 0.073" | 2" | 0.89" | Round | 0.073" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 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.
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Wire Gauge | ||||||||||
Uncoated Cobalt Steel | ||||||||||
| 50 ga. | 0.07" | 2" | 0.89" | Round | 0.07" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
| 49 ga. | 0.073" | 2" | 0.89" | Round | 0.073" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 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 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Specifications Met | Each | |
Wire Gauge | ||||||||||
Black-Oxide Cobalt Steel | ||||||||||
| 9 ga. | 0.196" | 3 5/8" | 0.89" | Round | 0.196" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium | NAS907 Type D | 00000000 | 00000 |
| 8 ga. | 0.199" | 3 5/8" | 0.89" | Round | 0.199" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium | NAS907 Type D | 00000000 | 0000 |
| 7 ga. | 0.201" | 3 5/8" | 0.89" | Round | 0.201" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium | NAS907 Type D | 00000000 | 0000 |
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.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch—Short Length | |||||||||
Black-Oxide High-Speed Steel | |||||||||
| 5/32" | 0.1563" | 2 7/8" | 0.89" | Quick-Change Hex | 1/4" | Split | Steel, Iron, Stainless Steel | 00000000 | 00000 |
Cobalt Steel Hole-Starting Drill Bits
The short flute and length keep these bits straight for accurate placement when starting holes that will be drilled deeper with a longer bit. Also known as spotting drill bits. Cobalt steel bits are heat resistant and maintain their sharp edges when drilling hard material. They are for use in both hand-held drilling and machine-tool applications.
Bits with a 90° point angle are for centering and chamfering holes that will be followed by a smaller drill bit size.
Bits with a 120° point angle are for starting a hole that will be followed by a drill bit with a point angle from 90° to 118°.
For technical drawings and 3-D models, click on a part number.