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Decimal Size Equivalent Decimal Size Equivalent |
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Length Class Length Class |
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Jobbers' Length |
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Short Length |
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Extended Length |
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Reduced Shank Length |
For Use On For Use On |
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Finish Finish |
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Material Material |
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Overall Length Overall Length | Show |
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Overall Length Overall Length | Hide |
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Shank Type Shank Type |
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![]() | Round |
![]() | Reduced Round |
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![]() | SDS Plus |
![]() | Quick- Change Hex |
Maximum Drilling Depth Maximum Drilling Depth |
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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 |
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![]() | Straight Flute |
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Individual/Set Individual/Set |
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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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For Use With For Use With |
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For Cutter Material For Cutter Material |
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About Tool Steel
More
Drill Bit Decimal Size Equivalents
More
About Drill Bits
More
About Masonry Drill Bits
More
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.
More
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 | |||||||||||||
25/64" | 0.3906" | 5 1/8" | 3.16" | Round | 25/64" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 00000 | 6 | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
25/64" | 0.3906" | 5 1/8" | 3.16" | Round | 25/64" | 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 | |||||||||||||
25/64" | 0.3906" | 5 1/8" | 3.16" | Round | 25/64" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
25/64" | 0.3906" | 5 1/8" | 3.16" | Round | 25/64" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 0000 | 6 | 00000000 | 00000 |
Letter | |||||||||||||
Black-Oxide High-Speed Steel | |||||||||||||
W | 0.386" | 5 1/8" | 3.17" | Round | 0.386" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 00000 | 6 | 00000000 | 00000 |
X | 0.397" | 5 1/8" | 3.15" | Round | 0.397" | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 00000000 | 00000 | 6 | 00000000 | 00000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
W | 0.386" | 5 1/8" | 3.17" | Round | 0.386" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
X | 0.397" | 5 1/8" | 3.15" | Round | 0.397" | 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 | |||||||||||||
W | 0.386" | 5 1/8" | 3.17" | Round | 0.386" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
X | 0.397" | 5 1/8" | 3.15" | Round | 0.397" | Split | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
W | 0.386" | 5 1/8" | 3.17" | Round | 0.386" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 0000 | 6 | 00000000 | 00000 |
X | 0.397" | 5 1/8" | 3.15" | Round | 0.397" | Standard | __ | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 | __ | 000000 | 00 |
Extended-Length Drill Bits


Access hard-to-reach spots and drill deep holes.
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.
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 | |||||||||
1/8" | 0.125" | 5 1/8" | 2.56" | Round | 1/8" | Standard | Steel, Iron, Stainless Steel | 000000000 | 00000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||
1/8" | 0.125" | 5 1/8" | 2.5" | Round | 1/8" | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 000000000 | 0000 |
Wire Gauge | |||||||||
Black-Oxide High-Speed Steel | |||||||||
35 ga | 0.11" | 5 1/8" | 2.58" | Round | 0.11" | Standard | Steel, Iron, Stainless Steel | 00000000 | 00000 |
34 ga | 0.111" | 5 1/8" | 2.58" | Round | 0.111" | Standard | Steel, Iron, Stainless Steel | 00000000 | 00000 |
33 ga | 0.113" | 5 1/8" | 2.58" | Round | 0.113" | Standard | Steel, Iron, Stainless Steel | 00000000 | 00000 |
32 ga | 0.116" | 5 1/8" | 2.57" | Round | 0.116" | Standard | Steel, Iron, Stainless Steel | 00000000 | 00000 |
31 ga | 0.12" | 5 1/8" | 2.57" | Round | 0.12" | Standard | Steel, Iron, Stainless Steel | 00000000 | 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.
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 | ||||||||||
25/64" | 0.3906" | 5 1/8" | 2.96" | Round | 25/64" | Split | Steel, Iron, Stainless Steel | __ | 00000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
25/64" | 0.3906" | 5 1/8" | 2.96" | Round | 25/64" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | __ | 00000000 | 00000 |
Uncoated High-Speed Steel | ||||||||||
25/64" | 0.3906" | 5 1/8" | 2.96" | Round | 25/64" | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | DIN 338 | 0000000 | 00000 |
Inch—Spiral Flute | ||||||||||
Uncoated High-Speed Steel | ||||||||||
25/64" | 0.3906" | 5 1/8" | 3.16" | Round | 25/64" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | __ | 00000000 | 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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Inch | ||||||||||
Uncoated Cobalt Steel | ||||||||||
25/64" | 0.3906" | 5 1/8" | 3.1" | Round | 25/64" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
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 | 00000 |
Letter | ||||||||||
Uncoated Cobalt Steel | ||||||||||
W | 0.386" | 5 1/8" | 3.17" | Round | 0.386" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
X | 0.397" | 5 1/8" | 3.15" | Round | 0.397" | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
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 |
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 | ||||||||||
25/64" | 0.3906" | 5 1/8" | 1.29" | Round | 25/64" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium | NAS907 Type D | 00000000 | 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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Inch | |||||||||
Uncoated Cobalt Steel | |||||||||
1/8" | 0.125" | 5 1/8" | 2.5" | Round | 1/8" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |
Wire Gauge | |||||||||
Uncoated Cobalt Steel | |||||||||
35 ga | 0.11" | 5 1/8" | 2.5" | Round | 0.11" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
34 ga | 0.111" | 5 1/8" | 2.5" | Round | 0.111" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
33 ga | 0.113" | 5 1/8" | 2.5" | Round | 0.113" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
32 ga | 0.116" | 5 1/8" | 2.5" | Round | 0.116" | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
31 ga | 0.12" | 5 1/8" | 2.5" | Round | 0.12" | 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 | |||||||||
1/8" | 0.125" | 5 1/8" | 2.44" | Round | 1/8" | Standard | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
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 |
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 | ||||||||||
25/64" | 0.3906" | 5 1/8" | 1.56" | Hex | 25/64" | Split | ANSI Standards | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
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" | 5 1/8" | 1 1/16" | 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 | ||||||||
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. 5 | 1/8" | 0.125" | 5 1/8" | 2 3/4" | Round | 1/8" | Standard | 00000000 | 000000 |
Fast-Cutting Drill Bits for Wood

The screw point draws the bit in, quickly boring holes without applying pressure.
For technical drawings and 3-D models, click on a part number.
Shank | |||||||
---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Type | Size | Point Style | Each | |
Inch | |||||||
Black-Oxide Steel | |||||||
1 3/4" | 1.75" | 5 1/8" | Quick-Change Hex | 7/16" | Screw | 0000000 | 000000 |
2" | 2" | 5 1/8" | Quick-Change Hex | 7/16" | Screw | 0000000 | 00000 |
2 1/8" | 2.125" | 5 1/8" | Quick-Change Hex | 7/16" | Screw | 0000000 | 00000 |
2 1/4" | 2.25" | 5 1/8" | Quick-Change Hex | 7/16" | Screw | 0000000 | 00000 |
2 9/16" | 2.5625" | 5 1/8" | Quick-Change Hex | 7/16" | Screw | 0000000 | 00000 |
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 |
13/32" | 0.4063" | 5 1/8" | 3.88" | Round | 13/32" | Standard | 00000000 | 00000 |
1/2" | 0.5" | 5 1/8" | 2.63" | Round | 1/4" | Standard | 00000000 | 00000 |
Letter | ||||||||
Uncoated High-Speed Steel | ||||||||
W | 0.386" | 5 1/8" | 2.87" | Round | 0.386" | Standard | 000000000 | 00000 |
X | 0.397" | 5 1/8" | 2.87" | Round | 0.397" | Standard | 000000000 | 00000 |
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 | |||||||||
25/64" | 0.3906" | 5 1/8" | 2.96" | Round | 25/64" | 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 | |||||||||
25/64" | 0.3906" | 5 1/8" | 2.96" | Round | 25/64" | Standard | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 0000000 | 000000 |
Cobalt Steel Hole-Starting Drill Bits


The short flute and length keep these bits straight for accurate placement when starting holes that will be drilled deeper with a longer bit. Also known as spotting drill bits. Cobalt steel bits are heat resistant and maintain their sharp edges when drilling hard material. They are for use in both hand-held drilling and machine-tool applications.
Bits with a 90° point angle are for centering and chamfering holes that will be followed by a smaller drill bit size.
Bits with a 120° point angle are for starting a hole that will be followed by a drill bit with a point angle from 90° to 118°.
For technical drawings and 3-D models, click on a part number.
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. 10 | 0.386" | 0.196" | 5/8" | 5 1/8" | 0.3860" | 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 | |||||||||
1/4" | 0.391" | 0.266" | 1/2" | 5 1/8" | 2 | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | 00000000 | 000000 |
Ball-End Driver Shafts



Create your own tool by attaching these shafts to a handle, or use with socket wrenches and power tools. They have a ball end that allows angled entry to make good contact with the recess when a standard-tip shaft can’t.
For technical drawings and 3-D models, click on a part number.
Size | Overall Lg. | Max. Access Angle | Material | Finish | Each | |
Hex | ||||||
---|---|---|---|---|---|---|
5/32" | 5 1/8" | 25° | Steel | Black | 0000000 | 00000 |
Arbor Adapters for Hollow-Core Cutters

with Straight
Shank
Use hollow-core cutters on manual drill presses and milling machines. Also known as annular cutters.
For technical drawings and 3-D models, click on a part number.
Shank Dia. | For Cutter Shank Size | Overall Lg. | For Cutter Material | Material | Each | |
With Straight Shank | ||||||
---|---|---|---|---|---|---|
3/4" | 3/4" | 5 1/8" | Cobalt Steel, High-Speed Steel | High-Speed Steel | 000000000 | 0000000 |
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 | |
0.386" | -0.0002" to 0" | W | 5 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 000000 |
0.3906" | -0.0002" to 0" | 25/64" | 5 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
0.397" | -0.0002" to 0" | X | 5 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
9.6mm | -0.0050mm to 0.0000mm | 9.6 mm | 5 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
9.7mm | -0.0050mm to 0.0000mm | 9.7 mm | 5 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
9.8mm | -0.0050mm to 0.0000mm | 9.8 mm | 5 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
9.9mm | -0.0050mm to 0.0000mm | 9.9 mm | 5 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
10mm | -0.0050mm to 0.0000mm | 10 mm | 5 1/8" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
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 | |
0.386" | 0" to 0.0002" | W | 5 1/8" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |
0.3906" | 0" to 0.0002" | 25/64" | 5 1/8" | -1/32" to 1/32" | Precision Ground | 0.012" per ft. | 00000000 | 0000 |
0.397" | 0" to 0.0002" | X | 5 1/8" | -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 | |
25/64" | -0.0002" to 0" | 5 1/8" | Precision Ground | 0000000 | 000000 |