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 |
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Reduced Shank 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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Brad |
Material Material |
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Finish Finish |
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Shank Type Shank Type |
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Round | Reduced Round |
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 |
Decimal Size Equivalent Decimal Size Equivalent |
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Bit Style Bit Style |
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![]() | Spiral Flute |
Individual/Set Individual/Set |
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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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Specifications Met Specifications Met |
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Reamer Diameter Reamer Diameter |
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Flute Style Flute Style |
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![]() | Straight |
Drill Bit Decimal Size Equivalents
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About Drill Bits
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About Reamers
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Extended-Length Drill Bits


Access hard-to-reach spots and drill deep holes.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and black-oxide drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
1/8" | 0.125" | 5 1/8" | 2.75" | Round | 1/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 00000 |
Uncoated High-Speed Steel | |||||||||
1/8" | 0.125" | 5 1/8" | 2.75" | Round | 1/8" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000 |
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.
Drill bits with flats on shank have three flat sides to prevent the bit from slipping in the drill chuck.
For technical drawings and 3-D models, click on a part number.
Shank | Each | |||||||||
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Features | For Use On | Each | |
Inch | ||||||||||
Black-and-Gold-Oxide High-Speed Steel | ||||||||||
27/64" | 0.4219" | 4 1/2" | 2.75" | Round | 27/64" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 000000 |
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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Drill Bit 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 | |||||||||
1/4" | 0.25" | 4" | 2.75" | Round | 1/4" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, 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 | Pkg. | |||||||||||
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Drill Bit 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 | |||||||||||||
1/4" | 0.25" | 4" | 2.75" | Round | 1/4" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 000000 | 12 | 000000000 | 0000000 |
Letter | |||||||||||||
Titanium-Nitride (TiN) Coated Cobalt Steel | |||||||||||||
B | 0.238" | 4" | 2.75" | Round | 0.238" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 | __ | 000000 | 00 |
C | 0.242" | 4" | 2.75" | Round | 0.242" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 | __ | 000000 | 00 |
D | 0.246" | 4" | 2.75" | Round | 0.246" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 | __ | 000000 | 00 |
E | 0.25" | 4" | 2.75" | Round | 1/4" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
Carbide Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications. 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. 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.
Titanium-aluminum-nitride (TiAlN) coated drill bits are the most wear and temperature resistant for the longest life and highest drilling speeds.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Letter | |||||||||
Titanium-Aluminum-Nitride (TiAlN) Coated Carbide | |||||||||
U | 0.368" | 4 1/4" | 2.75" | Round | 0.368" | Four Facet | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 000000000 | 000000 |
V | 0.377" | 4 1/4" | 2.75" | Round | 0.377" | Four Facet | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 000000000 | 00000 |
Short-Flute Extended-Length Carbide-Tipped Drill Bits

The short flutes provide increased rigidity for drilling straighter holes and the long length lets you access hard-to-reach spots. 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. A split point keeps the bit centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | 6" Overall Lg. | |||||||
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Drill Bit Size | Decimal Size Equivalent | Type | Size | Point Style | For Use On | Max. Drilling Dp. | Each | |
Inch | ||||||||
Uncoated Carbide-Tipped Steel | ||||||||
1/4" | 0.25" | Round | 1/4" | Split | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.75" | 0000000 | 000000 |
1/4" Diameter Reduced-Shank Drill Bits

The shank has a smaller diameter than the tip, allowing you to drill large holes with machines that have small-capacity chucks.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
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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 | |||||||||
13/32" | 0.4063" | 4 1/2" | 2.75" | Reduced Round | 1/4" | Standard | Steel, Iron, Stainless Steel | 0000000 | 00000 |
Drill Bits for Precise Holes in Wood

Three sharp points allow these bits to drill accurate straight and overlapping holes, even across the grain. The center guide point prevents the bit from wandering. Also known as brad-point bits.
High-speed steel drill bits are stronger and more wear resistant than steel drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | ||||||||
Uncoated High-Speed Steel | ||||||||
1/4" | 0.25" | 4" | 2 3/4" | Round | 1/4" | Brad | 00000000 | 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 | |||||||||
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For Screw Size | Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | |||||||||
Uncoated High-Speed Steel | |||||||||
No. 4 | 7/64" | 0.1094" | 4 5/8" | 2 3/4" | Round | 7/64" | Standard | 00000000 | 000000 |
No. 5 | 1/8" | 0.125" | 5 1/8" | 2 3/4" | Round | 1/8" | Standard | 00000000 | 00000 |
No. 14 | 1/4" | 0.25" | 4" | 2 3/4" | Round | 1/4" | Standard | 0000000 | 0000 |
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.
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 | ||||||||
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Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | 1-5 | 6-Up | |
Inch—Spiral Flute | |||||||||
Uncoated High-Speed Steel | |||||||||
11/32" | 0.3438" | 4 3/4" | 2.75" | Round | 11/32" | 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.
Black-oxide and black-and-gold-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 | |||||||||
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Drill Bit 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 | |||||||||
17/64" | 0.2656" | 4 1/8" | 2.75" | Round | 17/64" | Split | Steel, Iron, Stainless Steel | 00000000 | 000000 |
Round-Shank Drill Reamers

Drill and finish holes in a single pass with these dual-purpose tools. The tapered tip gradually pierces your material to reduce friction, and the straight flutes make clean cuts without chipping or peeling the edge of the hole. Made from solid carbide, these drill reamers are strong and heat resistant. The flutes stay sharp even when cutting abrasive materials such as carbon fiber, fiberglass, and graphite. Use them in drill presses or other machines—carbide is brittle, and will break if used to drill by hand.
Dia. | Lg. | ||||||||||
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Reamer Size | Reamer | Shank | Max. Drilling Dp. | Flute | Overall | Number of Flutes | Flute Style | Cutting Dia. Tolerance | For Use On | Each | |
Carbide | |||||||||||
Inch | |||||||||||
9/32" | 0.2812" | 0.281" | 2.75" | 2 3/4" | 4" | 4 | Straight | 0" to 0.0005" | Carbon Fiber, Fiberglass, Graphite | 0000000 | 0000000 |