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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| Maintenance Length |
Point Style Point Style |
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| Split |
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| Standard |
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| Four Facet |
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| Notched |
Finish Finish |
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Material Material |
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Flute Direction Flute Direction |
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| Right Hand |
Shank Size Shank Size |
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Bit Style Bit Style |
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| Spiral Flute | Straight Flute |
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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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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For Screw Size For Screw Size |
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For Maximum Hardness For Maximum Hardness |
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Number of Coolant Holes Number of Coolant Holes |
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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.
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 | Each | Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | Pkg. Qty. | Pkg. | ||
Inch | |||||||||||||
Black-Oxide High-Speed Steel | |||||||||||||
| 3/8" | 0.375" | 3 1/8" | 1.25" | Round | 3/8" | Split | ASME B94.11M | Steel, Iron, Stainless Steel | 0000000 | 00000 | 6 | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
| 3/8" | 0.375" | 3 1/8" | 1.25" | Round | 3/8" | Split | __ | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | 3 | 0000000 | 00000 |
Uncoated High-Speed Steel | |||||||||||||
| 3/8" | 0.375" | 3 1/8" | 1.25" | Round | 3/8" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | 6 | 00000000 | 00000 |
Wire Gauge | |||||||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
| 12 ga | 0.189" | 2 1/4" | 1.25" | Round | 0.189" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 11 ga | 0.191" | 2 1/4" | 1.25" | Round | 0.191" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 10 ga | 0.1935" | 2 1/4" | 1.25" | Round | 0.1935" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 9 ga | 0.196" | 2 1/4" | 1.25" | Round | 0.196" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 8 ga | 0.199" | 2 1/4" | 1.25" | Round | 0.199" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 7 ga | 0.201" | 2 1/4" | 1.25" | Round | 0.201" | Split | ASME B94.11M | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
| 12 ga | 0.189" | 2 1/4" | 1.25" | Round | 0.189" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 11 ga | 0.191" | 2 1/4" | 1.25" | Round | 0.191" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 10 ga | 0.1935" | 2 1/4" | 1.25" | Round | 0.1935" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 9 ga | 0.196" | 2 1/4" | 1.25" | Round | 0.196" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 8 ga | 0.199" | 2 1/4" | 1.25" | Round | 0.199" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
| 7 ga | 0.201" | 2 1/4" | 1.25" | Round | 0.201" | Standard | ASME B94.11M | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
Maintenance-Length Drill Bits
Also known as mechanics’ bits, these are shorter and more rigid than jobbers' bits but longer than short-length bits. A split point keeps the bit 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 | |
Inch | |||||||||
Black-and-Gold-Oxide High-Speed Steel | |||||||||
| 3/32" | 0.0938" | 2 1/4" | 1.25" | Round | 3/32" | Split | Steel, Iron, Stainless Steel | 000000000 | 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.
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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch—Spiral Flute | |||||||||
Black-Oxide High-Speed Steel | |||||||||
| 9/64" | 0.1406" | 2 3/4" | 1.25" | Round | 9/64" | Split | Steel, Iron, Stainless Steel | 00000000 | 00000 |
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 | Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | Pkg. Qty. | Pkg. | ||
Inch | |||||||||||||
Titanium-Nitride (TiN) Coated Cobalt Steel | |||||||||||||
| 3/32" | 0.0938" | 2 1/4" | 1.25" | Round | 3/32" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 | 12 | 000000000 | 000000 |
Wire Gauge | |||||||||||||
Titanium-Nitride (TiN) Coated Cobalt Steel | |||||||||||||
| 43 ga | 0.089" | 2 1/4" | 1.25" | Round | 0.089" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 0000 | __ | 000000 | 00 |
| 42 ga | 0.0935" | 2 1/4" | 1.25" | Round | 0.0935" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 0000 | __ | 000000 | 00 |
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 | ||||||||||
| 3/8" | 0.375" | 5" | 1.25" | Round | 3/8" | 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.
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 | Pkg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | Pkg. Qty. | Pkg. | ||
Inch | ||||||||||||
Uncoated Cobalt Steel | ||||||||||||
| 3/8" | 0.375" | 3 1/8" | 1.25" | Round | 3/8" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 | 6 | 000000000 | 000000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||||
| 3/8" | 0.375" | 3 1/8" | 1.25" | Round | 3/8" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
Carbide Drill Bits with Coolant Holes
Holes in these bits allow coolant to be run through the tool for more efficient chip evacuation. Use them in CNC machines with coolant-through technology. Made of solid carbide for the highest accuracy and longest tool life, they are harder, stronger, and more wear resistant than high-speed steel, cobalt steel, and carbide-tipped bits. They retain a sharp, hard edge at high temperatures for the best performance on hard and abrasive material. A titanium aluminum nitride (TiAlN) coating gives them additional wear and temperature resistance. The four-facet point keeps the bit centered without a pilot hole. These bits require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications.
Jobbers'-length drill bits have the rigidity and length required for most applications.
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 | No. of Coolant Holes | For Use On | Each | |
Inch—Jobbers' Length | ||||||||||
Titanium-Aluminum-Nitride (TiAlN) Coated Carbide | ||||||||||
| 3/16" | 0.1875" | 2 3/4" | 1.25" | Round | 3/16" | Four Facet | 2 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 000000 |
Cobalt Steel Hex-Shank Drill Bits
In addition to resisting heat and wear better than high-speed steel drill bits, these can also run up to 25% faster and have a longer tool life. Insert them into power screwdrivers, impact drivers, and other tools that accept hex shanks. The flat surfaces on the hex shank allow tool chucks to grip these bits more securely than those with a round shank. A split point keeps the bits centered without a pilot hole.
Shank | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Length | Maximum Drilling Depth | Type | Size | Point Style | For Use On | Each | |
Uncoated Cobalt Steel | |||||||||
| 5/16" | 0.3125" | 4 1/2" | 1.25" | Hex | 5/16" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
Drill Bits for Wood Screws
These bits are cut to match a wood screw’s thread and diameter, resulting in a perfect fit for a screw. They produce clean edges when cutting soft and hard wood.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Screw Size | Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | |||||||||
Uncoated High-Speed Steel | |||||||||
| No. 3 | 3/32" | 0.0938" | 2 1/4" | 1 1/4" | Round | 3/32" | Standard | 0000000 | 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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Max. Hardness | Each | |
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
| 5/16" | 0.3125" | 4 1/2" | 1.25" | Round | 5/16" | Notched | Rockwell C60 | 0000000 | 000000 |
Drill Bits for Plastic
The sharp point allows for gradual penetration to reduce friction and eliminate cracking and chipping when drilling in plastic. These bits are jobbers' length and have the rigidity and length required for most applications.
For technical drawings and 3-D models, click on a part number.