Drill Bit Decimal Size Equivalents
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About 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.
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. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | Pkg. Qty. | Pkg. | ||
Metric | |||||||||||||
Black-Oxide High-Speed Steel | |||||||||||||
9.6 mm | 0.378" | 133mm | 67.8mm | Round | 9.6mm | Standard | DIN 338 | Steel, Iron, Stainless Steel | 00000000 | 000000 | __ | 000000 | 00 |
9.7 mm | 0.3819" | 133mm | 67.6mm | Round | 9.7mm | Standard | DIN 338 | Steel, Iron, Stainless Steel | 00000000 | 00000 | __ | 000000 | 00 |
9.9 mm | 0.3898" | 133mm | 67.2mm | Round | 9.9mm | Standard | DIN 338 | Steel, Iron, Stainless Steel | 00000000 | 00000 | __ | 000000 | 00 |
10.0 mm | 0.3937" | 133mm | 67mm | Round | 10mm | Standard | DIN 338 | Steel, Iron, Stainless Steel | 00000000 | 00000 | 10 | 00000000 | 0000000 |
10.2 mm | 0.4016" | 133mm | 66.6mm | Round | 10.2mm | Standard | DIN 338 | Steel, Iron, Stainless Steel | 00000000 | 00000 | __ | 000000 | 00 |
10.5 mm | 0.4134" | 133mm | 66mm | Round | 10.5mm | Standard | DIN 338 | Steel, Iron, Stainless Steel | 00000000 | 00000 | __ | 000000 | 00 |
Black-and-Gold Oxide High-Speed Steel | |||||||||||||
10.2 mm | 0.4016" | 133mm | 92.1mm | Round | 10.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | 5 | 000000000 | 00000 |
10.5 mm | 0.4134" | 133mm | 92.1mm | Round | 10.5mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | 5 | 000000000 | 00000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | |||||||||||||
10.0 mm | 0.3937" | 133mm | 67mm | Round | 10mm | Standard | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
10.2 mm | 0.4016" | 133mm | 66.6mm | Round | 10.2mm | Standard | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
10.5 mm | 0.4134" | 133mm | 66mm | Round | 10.5mm | Standard | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
10.5 mm | 0.4134" | 133mm | 87.3mm | Round | 10.5mm | Standard | __ | Steel, Iron, Stainless Steel, Aluminum, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
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.
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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Specifications Met | Each | |
Metric—Parabolic Spiral Flute | ||||||||||
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
10.0 mm | 0.3937" | 133mm | 87mm | Round | 10mm | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | DIN 338 | 0000000 | 000000 |
10.5 mm | 0.4134" | 133mm | 87mm | Round | 10.5mm | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | DIN 338 | 0000000 | 00000 |
Uncoated High-Speed Steel | ||||||||||
10.0 mm | 0.3937" | 133mm | 67mm | Round | 10mm | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | DIN 338 | 0000000 | 00000 |
10.5 mm | 0.4134" | 133mm | 66mm | Round | 10.5mm | Split | Steel, Iron, Aluminum, Brass, Bronze, Plastic | DIN 338 | 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.
Titanium-aluminum-nitride (TiAlN) coated drill bits are the most wear and temperature resistant for the longest life and highest drilling speeds.
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 | Each | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Metric | ||||||||||
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||||||
9.7 mm | 0.3819" | 133mm | 87mm | Round | 9.7mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 000000 |
10.0 mm | 0.3937" | 133mm | 87.1mm | Round | 10mm | Split | DIN 338 | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 |
10.2 mm | 0.4016" | 133mm | 87.1mm | Round | 10.2mm | Split | DIN 338 | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 |
10.5 mm | 0.4134" | 133mm | 87mm | Round | 10.5mm | Split | DIN 338, NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 |
Titanium-Aluminum-Nitride (TiAlN) Coated Cobalt Steel | ||||||||||
10.0 mm | 0.3937" | 133mm | 72mm | Round | 10mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 00000 |
10.2 mm | 0.4016" | 133mm | 87mm | Round | 10.2mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 00000 |
Gold-Oxide Cobalt Steel | ||||||||||
9.6 mm | 0.378" | 133mm | 67.8mm | Round | 9.6mm | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 000000000 | 00000 |
9.7 mm | 0.3819" | 133mm | 67.6mm | Round | 9.7mm | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 000000000 | 00000 |
10.0 mm | 0.3937" | 133mm | 67mm | Round | 10mm | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 000000000 | 00000 |
10.2 mm | 0.4016" | 133mm | 66.6mm | Round | 10.2mm | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 000000000 | 00000 |
10.5 mm | 0.4134" | 133mm | 66mm | Round | 10.5mm | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 000000000 | 00000 |
Chip-Clearing Cobalt Steel Drill Bits
The parabolic spiral flutes lift chips out of the hole, reducing clogging and improving coolant flow. 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. 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.
Shank | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Metric—Parabolic Spiral Flute | ||||||||||
Uncoated Cobalt Steel | ||||||||||
9.6 mm | 0.378" | 133mm | 87mm | Round | 9.6mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |
9.7 mm | 0.3819" | 133mm | 87mm | Round | 9.7mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
10.0 mm | 0.3937" | 133mm | 87mm | Round | 10mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
10.1 mm | 0.3976" | 133mm | 87mm | Round | 10.1mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
10.2 mm | 0.4016" | 133mm | 87mm | Round | 10.2mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
10.3 mm | 0.4055" | 133mm | 87mm | Round | 10.3mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
10.4 mm | 0.4094" | 133mm | 87mm | Round | 10.4mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
10.6 mm | 0.4173" | 133mm | 87mm | Round | 10.6mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Type | Size | For Use On | Max. Drilling Dp. | Point Angle | Each | |
Standard Point | |||||||||
Metric | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
10.0 mm | 0.3937" | 133mm | Round | 10mm | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 76.2mm | 118° | 00000000 | 000000 |
Split Point | |||||||||
Metric | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
10.5 mm | 0.4134" | 133mm | Round | 10.5mm | Iron, Aluminum, Brass, Bronze, Plastic | 98mm | 135° | 00000000 | 00000 |
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.
Shank | |||||||||
---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Max. Hardness | Each | |
Metric | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
10.0 mm | 0.3937" | 133mm | 40mm | Round | 10mm | Notched | Rockwell C60 | 0000000 | 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.
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.
For technical drawings and 3-D models, click on a part number.
Shank | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Specifications Met | Each | |
Metric | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
10.0 mm | 0.3937" | 133mm | 74mm | Round | 10mm | Standard | Steel, Iron, Stainless Steel | DIN 338 | 00000000 | 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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Specifications Met | Each | |
Metric | ||||||||||
Uncoated Cobalt Steel | ||||||||||
10.5 mm | 0.4134" | 133mm | 98mm | Round | 10.5mm | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | NAS907 Type J | 0000000 | 000000 |