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 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Black-Oxide High-Speed Steel | |||||||||
| 11/16" | 0.6875" | 7 5/8" | 4.59" | Round | 11/16" | Standard | Steel, Iron, Stainless Steel | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
| 11/16" | 0.6875" | 7 5/8" | 4.59" | Round | 11/16" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
Uncoated High-Speed Steel | |||||||||
| 11/16" | 0.6875" | 7 5/8" | 4.59" | Round | 11/16" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
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.
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 | |
Inch | ||||||||||
Uncoated High-Speed Steel | ||||||||||
| 11/16" | 0.6875" | 4 5/8" | 1.84" | Round | 11/16" | Standard | ASME B94.11M | Steel, Iron, Stainless Steel | 00000000 | 000000 |
Extended-Length Drill Bits
Access hard-to-reach spots and drill deep holes.
Black-oxide drill bits produce less friction than uncoated drill bits.
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 | |||||||||
Black-Oxide High-Speed Steel | |||||||||
| 11/16" | 0.6875" | 9 1/4" | 4.34" | Round | 11/16" | Standard | Steel, Iron, Stainless Steel | 000000000 | 000000 |
| 11/16" | 0.6875" | 12" | 7.62" | Round | 11/16" | Standard | Steel, Iron, Stainless Steel | 0000000 | 00000 |
| 11/16" | 0.6875" | 18" | 11.62" | Round | 11/16" | Standard | Steel, Iron, Stainless Steel | 0000000 | 000000 |
Uncoated High-Speed Steel | |||||||||
| 11/16" | 0.6875" | 9 1/4" | 5.38" | Round | 11/16" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Inch | ||||||||||
Uncoated Cobalt Steel | ||||||||||
| 11/16" | 0.6875" | 7 1/8" | 4.6" | Round | 11/16" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
| 11/16" | 0.6875" | 7 5/8" | 5.63" | Round | 11/16" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
Extended-Length Cobalt Steel Drill Bits
Access hard-to-reach spots and drill deep holes. 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. The 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 | |||||||||
Uncoated Cobalt Steel | |||||||||
| 11/16" | 0.6875" | 9 1/4" | 4" | Round | 11/16" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 0000000 |
| 11/16" | 0.6875" | 12" | 9" | Round | 11/16" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Extended-Length Carbide-Tipped Drill Bits
Access hard-to-reach spots and drill deep holes. More wear resistant than cobalt steel and high-speed steel, these carbide-tipped bits 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.
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 | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
| 11/16" | 0.6875" | 9 1/4" | 4.34" | Round | 11/16" | Standard | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
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.
Shank | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | For Use On | Point Angle | Each | |
Standard Point | |||||||||
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
| 11/16" | 0.6875" | 4 5/8" | 2.04" | Round | 11/16" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 118° | 000000000 | 000000 |
Split Point | |||||||||
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
| 11/16" | 0.6875" | 4 5/8" | 2.04" | Round | 11/16" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 135° | 0000000 | 00000 |
Drill Bits for Paper and Fabric
These bits have razor-sharp cutting edges for making clean holes in fibrous material. They are standard Style A bits for use with Challenge and Lassco paper-drilling machines.
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 | Each | |
Inch | |||||||
Uncoated Steel | |||||||
| 1/8" | 0.125" | 3 1/8" | 1" | Round | 11/16" | 0000000 | 000000 |
| 3/16" | 0.1875" | 3 1/8" | 1 3/4" | Round | 11/16" | 0000000 | 00000 |
| 1/4" | 0.25" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |
| 5/16" | 0.3125" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |
| 3/8" | 0.375" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |
| 7/16" | 0.4375" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |
| 1/2" | 0.5" | 3 1/8" | 2" | Round | 11/16" | 0000000 | 00000 |