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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Reduced Shank Length |
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Maintenance Length |
Finish Finish |
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Material Material |
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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 |
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Notched |
Shank Type Shank Type |
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![]() | Round |
![]() | Reduced Round |
![]() | Hex |
![]() | SDS Plus |
Flute Direction Flute Direction |
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Right Hand |
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Left Hand |
Bit Style Bit Style |
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![]() | Spiral Flute |
![]() | Parabolic Spiral Flute |
![]() | Straight Flute |
Overall Length Overall Length | Show |
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Overall Length Overall Length | Hide |
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Individual/Set Individual/Set |
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Maximum Drilling Depth Maximum Drilling Depth |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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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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About Tool Steel
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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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About Countersinks
Countersinks cut a cone-shaped opening to install screws and rivets flush with a surface or hold workpieces between centers on a lathe. They can also be used for chamfering and deburring.
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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. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | |||||||||||||
11/32" | 0.3438" | 4 3/4" | 2.92" | Round | 11/32" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 00000 | 6 | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
11/32" | 0.3438" | 4 3/4" | 2.92" | Round | 11/32" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 00000 | 6 | 000000000 | 00000 |
Titanium-Aluminum-Nitride (TiAlN) Coated High-Speed Steel | |||||||||||||
11/32" | 0.3438" | 4 3/4" | 2.92" | Round | 11/32" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
11/32" | 0.3438" | 4 3/4" | 2.92" | Round | 11/32" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000 | 6 | 00000000 | 00000 |
Letter | |||||||||||||
Black-Oxide High-Speed Steel | |||||||||||||
Q | 0.332" | 4 3/4" | 2.94" | Round | 0.332" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
R | 0.339" | 4 3/4" | 2.92" | Round | 0.339" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 0000 | 6 | 00000000 | 00000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
Q | 0.332" | 4 3/4" | 2.94" | Round | 0.332" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
R | 0.339" | 4 3/4" | 2.92" | Round | 0.339" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
Titanium-Aluminum-Nitride (TiAlN) Coated High-Speed Steel | |||||||||||||
Q | 0.332" | 4 3/4" | 2.94" | Round | 0.332" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
R | 0.339" | 4 3/4" | 2.92" | Round | 0.339" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
Q | 0.332" | 4 3/4" | 2.94" | Round | 0.332" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | 6 | 00000000 | 00000 |
R | 0.339" | 4 3/4" | 2.92" | Round | 0.339" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | 6 | 00000000 | 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.
Black-oxide drill bits produce less friction than uncoated drill bits.
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 | Specifications Met | For Use On | Each | |
Inch | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
23/32" | 0.7188" | 4 3/4" | 1.92" | Round | 23/32" | Standard | ASME B94.11M | Steel, Iron, Stainless Steel | 00000000 | 000000 |
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
15/32" | 0.4688" | 4 3/4" | 3" | Round | 15/32" | Split | Flats on Shank | Steel, Iron, Stainless Steel | 00000000 | 000000 |
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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
11/32" | 0.3438" | 4 3/4" | 2.74" | Round | 11/32" | Split | Steel, Iron, Stainless Steel | __ | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
11/32" | 0.3438" | 4 3/4" | 2.74" | Round | 11/32" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | __ | 00000000 | 00000 |
Uncoated High-Speed Steel | ||||||||||
11/32" | 0.3438" | 4 3/4" | 2.74" | Round | 11/32" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | DIN 338 | 0000000 | 00000 |
Inch—Spiral Flute | ||||||||||
Uncoated High-Speed Steel | ||||||||||
11/32" | 0.3438" | 4 3/4" | 2.92" | Round | 11/32" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | __ | 00000000 | 0000 |
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Inch | ||||||||||
Uncoated Cobalt Steel | ||||||||||
11/32" | 0.3438" | 4 3/4" | 2.9" | Round | 11/32" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
11/32" | 0.3438" | 4 3/4" | 3.44" | Round | 11/32" | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
Letter | ||||||||||
Uncoated Cobalt Steel | ||||||||||
Q | 0.332" | 4 3/4" | 2.94" | Round | 0.332" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
R | 0.339" | 4 3/4" | 2.92" | Round | 0.339" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
Q | 0.332" | 4 3/4" | 3.44" | Round | 0.332" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
R | 0.339" | 4 3/4" | 3.44" | Round | 0.339" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 000000000 | 00000 |
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 | ||||||||||
11/32" | 0.3438" | 4 3/4" | 1.17" | Round | 11/32" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium | NAS907 Type D | 00000000 | 000000 |
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-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits.
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Carbide | |||||||||
29/64" | 0.4531" | 4 3/4" | 2.4" | Round | 29/64" | Four Facet | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000000 |
15/32" | 0.4688" | 4 3/4" | 2.4" | Round | 15/32" | Four Facet | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
1/2" | 0.5" | 4 3/4" | 2.4" | Round | 1/2" | Four Facet | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated Carbide | |||||||||
29/64" | 0.4531" | 4 3/4" | 2.4" | Round | 29/64" | Four Facet | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 00000 |
15/32" | 0.4688" | 4 3/4" | 2.4" | Round | 15/32" | Four Facet | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 00000 |
1/2" | 0.5" | 4 3/4" | 2.4" | Round | 1/2" | Four Facet | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 00000 |
Titanium-Aluminum-Nitride (TiAlN) Coated Carbide | |||||||||
29/64" | 0.4531" | 4 3/4" | 2.4" | Round | 29/64" | Four Facet | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 000000 |
15/32" | 0.4688" | 4 3/4" | 2.4" | Round | 15/32" | Four Facet | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 000000 |
1/2" | 0.5" | 4 3/4" | 2.4" | Round | 1/2" | Four Facet | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 000000 |
Smooth-Finish Carbide Drill Bits

Three cutting edges instead of the typical two enable these bits to drill holes with a smoother finish than other bits. 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. These bits require rigid toolholding to prevent breakage and should not be used in hand-held drilling. All are jobbers’ length so they have the rigidity and length required for most applications. 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 | Shank Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Carbide | |||||||||
1/2" | 0.5" | 4 3/4" | 2.4" | Round | 1/2" | Split | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000000 |
33/64" | 0.5156" | 4 3/4" | 3" | Round | 33/64" | Split | Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
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 | ||||||||||
7/16" | 0.4375" | 4 3/4" | 2.81" | Round | 7/16" | Four Facet | 2 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 0000000 |
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Type | Size | For Use On | Max. Drilling Dp. | Point Angle | Each | |
Standard Point | |||||||||
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
21/64" | 0.3281" | 4 3/4" | Round | 21/64" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.8" | 118° | 0000000 | 000000 |
11/32" | 0.3438" | 4 3/4" | Round | 11/32" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.8" | 118° | 0000000 | 00000 |
Letter | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
P | 0.323" | 4 3/4" | Round | 0.323" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.8" | 118° | 00000000 | 00000 |
Q | 0.332" | 4 3/4" | Round | 0.332" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.8" | 118° | 00000000 | 00000 |
R | 0.339" | 4 3/4" | Round | 0.339" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.8" | 118° | 00000000 | 00000 |
Split Point | |||||||||
Inch | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
21/64" | 0.3281" | 4 3/4" | Round | 21/64" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.8" | 135° | 00000000 | 00000 |
11/32" | 0.3438" | 4 3/4" | Round | 11/32" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.8" | 135° | 00000000 | 00000 |
Letter | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
P | 0.323" | 4 3/4" | Round | 0.323" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.8" | 135° | 000000000 | 00000 |
Q | 0.332" | 4 3/4" | Round | 0.332" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.9" | 135° | 000000000 | 00000 |
R | 0.339" | 4 3/4" | Round | 0.339" | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 2.9" | 135° | 000000000 | 00000 |
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Black-Oxide High-Speed Steel | |||||||||
7/16" | 0.4375" | 4 3/4" | 2.94" | Reduced Round | 1/4" | Standard | Steel, Iron, Stainless Steel | 0000000 | 00000 |
29/64" | 0.4531" | 4 3/4" | 3.03" | Reduced Round | 1/4" | Standard | Steel, Iron, Stainless Steel | 0000000 | 00000 |
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 | Specifications Met | For Use On | Each | |
Uncoated Cobalt Steel | ||||||||||
11/32" | 0.3438" | 4 3/4" | 1.37" | Hex | 11/32" | Split | ANSI Standards | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
SDS-Plus-Shank Masonry Drill Bits for Rotary Hammers


The SDS-Plus shank has two deep slots and two shallow slots for use with SDS-Plus-drive rotary hammers. These bits cannot be used with SDS-Max-drive rotary hammers. Drill holes using simultaneous rotary and hammering action to break masonry material into tiny granules. This type of bit drills faster and penetrates material with less pressure than rotary-only bits. Also called percussion or impact bits.
For technical drawings and 3-D models, click on a part number.
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Type | Specifications Met | For Use On | Each | |
Inch—Standard Point | ||||||||
---|---|---|---|---|---|---|---|---|
Uncoated Carbide-Tipped Steel | ||||||||
7/32" | 0.2188" | 4 3/4" | 2.5" | SDS Plus | ANSI B212.15 | Masonry, Concrete | 0000000 | 00000 |
Masonry Drill Bits for Anchor Installation


A built-in stop ensures repeatable drilling depths for installing drop-in anchors. The SDS-Plus shank has two deep slots and two shallow slots for use with SDS-Plus-drive rotary hammers. These bits cannot be used with SDS-Max-drive rotary hammers.
For technical drawings and 3-D models, click on a part number.
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Shank Type | Point Style | Specifications Met | For Use On | Each | |
Inch | |||||||||
---|---|---|---|---|---|---|---|---|---|
Uncoated Carbide-Tipped Steel | |||||||||
3/8" | 0.375" | 4 3/4" | 11/16" | SDS Plus | Standard | ANSI B212.15 | Masonry, Concrete | 000000 | 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 | ||||||||
11/32" | 0.3438" | 4 3/4" | 3.44" | Round | 3/8" | Brad | 00000000 | 000000 |
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.
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 | ||||||||
11/32" | 0.3438" | 4 3/4" | 3.44" | Round | 11/32" | Standard | 00000000 | 000000 |
7/16" | 0.4375" | 4 3/4" | 2.5" | Round | 1/4" | Standard | 00000000 | 00000 |
Letter | ||||||||
Uncoated High-Speed Steel | ||||||||
Q | 0.332" | 4 3/4" | 2.62" | Round | 0.332" | Standard | 000000000 | 00000 |
R | 0.339" | 4 3/4" | 2.62" | Round | 0.339" | Standard | 000000000 | 00000 |
Drill Bits for Carbon Fiber, Fiberglass, and Graphite


These jobbers'-length bits have the rigidity and length required for most applications. They are designed to make clean holes in abrasive material. Their point keeps the bit centered without a pilot hole.
Uncoated drill bits have three drill points that make clean holes in fiber-reinforced composites without fraying or delaminating the material.
Diamond-coated drill bits are highly wear resistant for drilling in abrasive material. They last longer than uncoated 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 Carbide | ||||||||
29/64" | 0.4531" | 4 3/4" | 2.4" | Round | 29/64" | Brad | 0000000 | 0000000 |
15/32" | 0.4688" | 4 3/4" | 2.4" | Round | 15/32" | Brad | 0000000 | 000000 |
31/64" | 0.4844" | 4 3/4" | 2.4" | Round | 31/64" | Brad | 0000000 | 000000 |
1/2" | 0.5" | 4 3/4" | 2.4" | Round | 1/2" | Brad | 0000000 | 000000 |
Diamond-Coated Carbide | ||||||||
1/2" | 0.5" | 4 3/4" | 2.4" | Round | 1/2" | Split | 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 | |||||||||
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.
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 | |||||||||
11/32" | 0.3438" | 4 3/4" | 2.74" | Round | 11/32" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
Cobalt Steel Left-Hand Drill Bits

With better heat and wear resistance than high-speed steel, cobalt steel bits can run up to 25% faster and have a longer tool life. 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 maintenance length, also known as mechanics’ length. They are shorter and more rigid than jobbers’ bits but longer than short-length bits. 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 | |||||||||
15/32" | 0.4688" | 4 3/4" | 2.23" | Round | 15/32" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Countersinking Drill Bits for Screws

Also known as step drill bits, these bits countersink as they drill. The 82° countersink angle is compatible with the profile of flat- and oval-head inch screws. After multiple sharpenings, the drill bit diameter may become smaller.
For technical drawings and 3-D models, click on a part number.
Dia. | Lg. | 82° Countersink Angle | |||||||
---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body | Step | Step | Overall | Shank Dia. | Point Angle | For Use On | Each | |
Uncoated High-Speed Steel | |||||||||
2 Flute | |||||||||
No. 8 | 0.332" | 0.169" | 1/2" | 4 3/4" | 0.3320" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
Counterboring Drill Bits

Often called step drill bits, these drill and counterbore holes at the same time. After drilling and counterboring, tap the hole and install your fastener. The body diameter may decrease after multiple sharpenings.
For technical drawings and 3-D models, click on a part number.
Dia. | Lg. | |||||||
---|---|---|---|---|---|---|---|---|
For Screw Size | Body | Step | Step | Overall | Point Angle | For Use On | Each | |
Uncoated High-Speed Steel | ||||||||
No. 10 | 0.332" | 0.204" | 5/8" | 4 3/4" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
Oversized Long-Life Counterboring Drill Bits

These counterbores are often used when screw holes in sheets or layers are misaligned. Also known as subland drill bits, they last longer than standard counterboring drill bits because the diameter stays the same after sharpening. They drill and counterbore at the same time. After drilling and counterboring, tap the hole and install your fastener. The diameters account for the 1/32” or 1/64” oversized diameter rating.
For technical drawings and 3-D models, click on a part number.
Dia. | Lg. | ||||||||
---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body | Step | Step | Overall | Number of Flutes | Point Angle | For Use On | Each | |
Uncoated High-Speed Steel | |||||||||
1/64" Oversized | |||||||||
No. 10 | 0.344" | 0.206" | 1/2" | 4 3/4" | 2 | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |
Hardened Undersized High-Speed M2 Tool Steel Rods

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
These rods, also known as drill blanks, have an undersized diameter for machining your own jobbers'-length drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Drill Bit Size | Lg. | Mechanical Finish | Straightness Tolerance | Each | |
0.332" | -0.0002" to 0" | Q | 4 3/4" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
0.339" | -0.0002" to 0" | R | 4 3/4" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.3438" | -0.0002" to 0" | 11/32" | 4 3/4" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
8.4mm | -0.0050mm to 0.0000mm | 8.4 mm | 4 3/4" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
8.5mm | -0.0050mm to 0.0000mm | 8.5 mm | 4 3/4" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
8.6mm | -0.0050mm to 0.0000mm | 8.6 mm | 4 3/4" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
8.7mm | -0.0050mm to 0.0000mm | 8.7 mm | 4 3/4" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
Hardened Oversized High-Speed M2 Tool Steel Rods

- Yield Strength: Not Rated
- Hardness: Rockwell C60 (Very Hard)
Also known as reamer blanks, these rods have an oversized diameter that allows for finishing to your exact requirements. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Reamer Size | Lg. | Lg. Tolerance | Mechanical Finish | Straightness Tolerance | Each | |
0.332" | 0" to 0.0002" | Q | 4 3/4" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
0.339" | 0" to 0.0002" | R | 4 3/4" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.3438" | 0" to 0.0002" | 11/32" | 4 3/4" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
Hardened High-Speed M42 Tool Steel

- Yield Strength: Not Rated
- Hardness: Rockwell C65 (Very Hard)
Also known as cobalt steel, this M42 tool steel maintains its hardness in high-speed cutting applications that generate intense heat. Use it to make tools for cutting extremely hard materials.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Lg. | Mechanical Finish | Each | |
11/32" | -0.0002" to 0" | 4 3/4" | Precision Ground | 0000000 | 000000 |