Decimal Size Equivalent Decimal Size Equivalent |
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For Use On For Use On |
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Shank Type Shank Type |
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Round | Reduced Round |
Length Class Length Class |
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Jobbers' Length |
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Extended Length |
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Reduced Shank Length |
Point Style Point Style |
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Split |
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Standard |
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Brad |
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Serrated |
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Carbide Insert |
Material Material |
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Flute Direction Flute Direction |
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Right Hand |
Bit Style Bit Style |
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![]() | Spiral Flute |
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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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Individual/Set Individual/Set |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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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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For Drilling Type For Drilling Type |
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For Screw Size For Screw Size |
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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About Masonry 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.
Titanium-aluminum-nitride (TiAlN) coated drill bits are the most wear and temperature resistant for the longest life and highest drilling speeds.
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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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 | |||||||||||||
1/2" | 0.5" | 6" | 3.75" | Round | 1/2" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 000000 | 6 | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
1/2" | 0.5" | 6" | 3.75" | Round | 1/2" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 00000 | 6 | 000000000 | 000000 |
Titanium-Aluminum-Nitride (TiAlN) Coated High-Speed Steel | |||||||||||||
1/2" | 0.5" | 6" | 3.75" | Round | 1/2" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | 6 | 000000 | 000000 |
Uncoated High-Speed Steel | |||||||||||||
1/2" | 0.5" | 6" | 3.75" | Round | 1/2" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | 6 | 00000000 | 00000 |
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
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 | |||||||||
15/64" | 0.2344" | 6 1/8" | 3.75" | Round | 15/64" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 000000 |
1/4" | 0.25" | 6 1/8" | 3.75" | Round | 1/4" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 00000 |
1/2" | 0.5" | 7 3/4" | 3.75" | Round | 1/2" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 00000 |
Uncoated High-Speed Steel | |||||||||
15/64" | 0.2344" | 6 1/8" | 3.75" | Round | 15/64" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000 |
1/4" | 0.25" | 6 1/8" | 3.75" | Round | 1/4" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000 |
Letter | |||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
C | 0.242" | 6 1/8" | 3.75" | Round | 0.242" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 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.
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 | |||||||||
Uncoated High-Speed Steel | |||||||||
1/2" | 0.5" | 6" | 3.75" | Round | 1/2" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 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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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 | |||||||||
25/64" | 0.3906" | 5 1/8" | 3.75" | Round | 25/64" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
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 | |||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Inch | ||||||||||
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
25/64" | 0.3906" | 5 1/8" | 3.75" | Round | 25/64" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 000000 |
Letter | ||||||||||
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
W | 0.386" | 5 1/8" | 3.75" | Round | 0.386" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
X | 0.397" | 5 1/8" | 3.75" | Round | 0.397" | Split | NAS907 Type J | Steel, Hardened Steel, Tool 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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Cobalt Steel | |||||||||
7/16" | 0.4375" | 7 1/4" | 3.75" | Round | 7/16" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |
1/2" | 0.5" | 7 3/4" | 3.75" | Round | 1/2" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
9/16" | 0.5625" | 8 1/4" | 3.75" | Round | 9/16" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
7/16" | 0.4375" | 7 1/4" | 3.75" | Round | 7/16" | Standard | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
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. | 12" Overall Lg. | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Type | Size | Point Style | For Use On | Max. Drilling Dp. | Each | Max. Drilling Dp. | Each | ||
Inch | |||||||||||
Uncoated Carbide-Tipped Steel | |||||||||||
25/64" | 0.3906" | Round | 25/64" | Split | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 3.75" | 0000000 | 000000 | __ | 000000 | 00 |
1/2" | 0.5" | Round | 1/2" | Split | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | __ | 000000 | 00 | 3.75" | 0000000 | 000000 |
Carbide-Tipped Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications. 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 | Standard Point | Split Point | ||||||||||
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Size | Decimal Size Equivalent | Overall Lg. | Type | Size | For Use On | Max. Drilling Dp. | Point Angle | Each | Point Angle | Each | ||
Inch | ||||||||||||
Uncoated Carbide-Tipped Steel | ||||||||||||
31/64" | 0.4844" | 6" | Round | 31/64" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 3.75" | 118° | 0000000 | 000000 | 135° | 00000000 | 000000 |
1/2" | 0.5" | 6" | Round | 1/2" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 3.75" | 118° | 0000000 | 00000 | 135° | 00000000 | 00000 |
3/8" 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. 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 | Each | |
Inch | |||||||||
Black-Oxide High-Speed Steel | |||||||||
25/64" | 0.3906" | 5 1/8" | 3.75" | Reduced Round | 3/8" | Split | Steel, Iron, Stainless Steel | 0000000 | 000000 |
Round- and Hex-Shank Masonry Drill Bits for Hammer Drills

Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. These bits drill faster and penetrate materials with less pressure than rotary-only bits. Also known as percussion or impact bits.
Serrated-point drill bits deliver faster, cooler cutting as well as longer life than standard-point masonry drill bits.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Specifications Met | For Use On | Each | |
Inch—Serrated Point | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
1/4" | 0.25" | 6" | 3.75" | Round | 1/4" | ANSI B212.15 | Masonry, Concrete | 0000000 | 000000 |
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 | ||||||||
---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | ||||||||
Uncoated High-Speed Steel | ||||||||
25/64" | 0.3906" | 5 1/8" | 3 3/4" | Round | 3/8" | Brad | 00000000 | 000000 |
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. 14 | 1/4" | 0.25" | 6 1/8" | 3 3/4" | Round | 1/4" | Standard | 00000000 | 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.
Shank | ||||||||
---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Each | |
Inch | ||||||||
Uncoated High-Speed Steel | ||||||||
25/64" | 0.3906" | 5 1/8" | 3.75" | Round | 25/64" | Standard | 00000000 | 000000 |
Drill Bits for Stone, Granite, and Slate

Multiple cutting edges on the tip allow these bits to drill quickly through natural stone, granite, and other hard, abrasive material.
Drill bits with flats on shank have three flat sides to prevent the bit from slipping in the drill chuck.
Replaceable Carbide-Insert Drill Bits
Use these bits to drill a large number of holes with high precision. When the cutting edges dull, replace the carbide inserts (sold separately) instead of the entire bit. Each drill bit requires two inserts—one on the inner cutting edge and one on the outer cutting edge. Bits can be used in CNC machines with coolant-through technology; holes in the bit allow coolant to be channeled through the tool for more efficient chip evacuation.
For technical drawings and 3-D models, click on a part number.

Drill Bits | ||||||||||||
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For Insert Inscribed Circle Dia. (IC) | Shank | Replacement Screws | ||||||||||
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Inner | Outer | For Use On | Type | Size | Each | Each | ||
Steel | ||||||||||||
3/4" | 0.75" | 6 3/4" | 3 3/4" | 0.224" | 0.236" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1" | 0000000 | 0000000 | 0000000 | 00000 |
1 1/4" | 1.25" | 7 5/8" | 3 3/4" | 0.402" | 0.419" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Round | 1 1/2" | 0000000 | 000000 | 0000000 | 0000 |


For Drill Bit Size | Inscribed Circle Dia. (IC) | Thick. | Hole Dia. | Tip Radius | For Use On | Features | Each | |
Titanium-Aluminum-Nitride (TiAlN) Coated Carbide | ||||||||
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11/16", 3/4" | 0.224" | 3/32" | 1/8" | 1/64" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 000000 |
1 1/4", 1 3/8" | 0.402" | 1/8" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic | Chip Breakers | 0000000 | 00000 |


For Drill Bit Size | Inscribed Circle Dia. (IC) | Thick. | Hole Dia. | Tip Radius | For Use On | Features | Each | |
Titanium-Nitride (TiN) Coated Carbide | ||||||||
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11/16", 3/4" | 0.236" | 3/32" | 1/8" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 000000 |
1 1/4", 1 3/8" | 0.419" | 1/8" | 3/16" | 1/32" | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic | Chip Breakers | 0000000 | 00000 |