System of Measurement System of Measurement |
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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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| Extended Length |
Shank Type Shank Type |
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 | Round |
Material Material |
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Bit Style Bit Style |
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 | Spiral Flute |
 | Parabolic Spiral Flute |
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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| Right Hand |
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| Left Hand |
Individual/Set Individual/Set |
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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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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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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 | ||||||||||
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| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Specifications Met | Each | |
Inch—Parabolic Spiral Flute | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
| 7/16" | 0.4375" | 5 1/2" | 3.18" | Round | 7/16" | Split | Steel, Iron, Stainless Steel | __ | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
| 7/16" | 0.4375" | 5 1/2" | 3.18" | Round | 7/16" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | __ | 00000000 | 00000 |
Uncoated High-Speed Steel | ||||||||||
| 7/16" | 0.4375" | 5 1/2" | 3.18" | Round | 7/16" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | DIN 338 | 0000000 | 00000 |
Drill Bits for Precise Holes
Specially-designed flutes keep these bits centered as they drill, resulting in straighter, rounder holes with tighter tolerances. They are titanium nitride (TiN) coated for wear and temperature resistance. Also known as double-margin drill bits.
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 Depth | Type | Size | Point Style | For Use On | Each | |
Inch—Jobbers' Length | |||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
| 5/16" | 0.3125" | 4 1/2" | 3.18" | Round | 5/16" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
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 | |||||||||
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| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Cobalt Steel | |||||||||
| 7/32" | 0.2188" | 6" | 3.18" | Round | 7/32" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |
Cobalt Steel Drill Bits for Stainless Steel and Nickel
Cobalt steel and a titanium aluminum nitride (TiAlN) coating provide the heat and wear resistance necessary for drilling in stainless steel and nickel alloys. These bits have parabolic spiral flutes, which lift chips out of the hole to reduce clogging and improve coolant flow. 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 | Specifications Met | Each | |
Inch—Parabolic Spiral Flute | |||||||||
Titanium-Aluminum-Nitride (TiAlN) Coated Cobalt Steel | |||||||||
| 11/32" | 0.3438" | 5" | 3.18" | Round | 11/32" | Split | DIN 338 | 0000000 | 000000 |
Drill Bits for Aluminum, Brass, and Bronze
Because softer metal, like aluminum, brass, and bronze, can clog a bit, the flutes on these bits lift chips out of the hole. Also known as slow-spiral drill bits. They 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.
Shank | Each | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | 1-5 | 6-Up | |
Inch—Spiral Flute | |||||||||
Uncoated High-Speed Steel | |||||||||
| 7/16" | 0.4375" | 5 1/2" | 3.18" | Round | 7/16" | Standard | 00000000 | 000000 | 000000 |
High-Speed Steel Left-Hand Drill Bits
Also known as reverse-flute bits, the flutes spiral in the opposite direction of other bits. Use in counterclockwise drilling applications such as removing broken screws. 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.
Shank | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated High-Speed Steel | |||||||||
| 7/16" | 0.4375" | 5 1/2" | 3.18" | Round | 7/16" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |