About Drill Bits
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Drill Bit Decimal Size Equivalents
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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.
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-and-Gold Oxide High-Speed Steel | |||||||||||||
6.0 mm | 0.2362" | 102mm | 66.7mm | Round | 6mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 00000 | 10 | 000000000 | 000000 |
6.1 mm | 0.2402" | 102mm | 66.7mm | Round | 6.1mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
6.2 mm | 0.2441" | 102mm | 66.7mm | Round | 6.2mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
6.3 mm | 0.248" | 102mm | 66.7mm | Round | 6.3mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 | __ | 000000 | 00 |
Uncoated High-Speed Steel | |||||||||||||
6.0 mm | 0.2362" | 102mm | 56.4mm | Round | 6mm | Standard | __ | Steel, Iron, Stainless Steel, Aluminum, Bronze, Plastic | 00000000 | 0000 | __ | 000000 | 00 |
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.
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 | Each | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | Specifications Met | For Use On | Each | |
Metric | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
12.0 mm | 0.4724" | 102mm | 27mm | Round | 12mm | Split | DIN 1897 | Steel, Iron, Stainless Steel | 00000000 | 000000 |
12.2 mm | 0.4803" | 102mm | 51mm | Round | 12.2mm | Split | DIN 1897 | Steel, Iron, Stainless Steel | 000000000 | 00000 |
12.5 mm | 0.4921" | 102mm | 51mm | Round | 12.5mm | Split | DIN 1897 | Steel, Iron, Stainless Steel | 000000000 | 00000 |
13.0 mm | 0.5118" | 102mm | 32.5mm | Round | 13mm | Standard | DIN 1897 | Steel, Iron, Stainless Steel | 00000000 | 00000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||||||
12.0 mm | 0.4724" | 102mm | 50.8mm | Round | 12mm | Split | DIN 1897 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
13.0 mm | 0.5118" | 102mm | 50.8mm | Round | 13mm | Split | DIN 1897 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 0000000 | 00000 |
Cobalt Steel Drill Bits
These jobbers'-length bits have the rigidity and length required for most applications. Made of cobalt steel, which has better heat and wear resistance than high-speed steel, they can run up to 25% faster and have a longer tool life.
Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits.
Drill bits with a split point keep centered without a pilot hole.
For technical drawings and 3-D models, click on a part number.
Shank | Each | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
6.5 mm | 0.2559" | 102mm | 63mm | Round | 6.5mm | Split | DIN 338 | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 000000 |
6.7 mm | 0.2638" | 102mm | 63mm | Round | 6.7mm | Split | DIN 338 | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 00000 |
Short-Length Cobalt Steel Drill Bits
Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'-length drill bits. 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.
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 | ||||||||||
Uncoated Cobalt Steel | ||||||||||
12.0 mm | 0.4724" | 102mm | 26.9mm | Round | 12mm | Split | DIN 1897 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |
13.0 mm | 0.5118" | 102mm | 24.9mm | Round | 13mm | Split | DIN 1897 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 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.
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 | Specifications Met | For Use On | Each | |
Metric—Parabolic Spiral Flute | ||||||||||
Uncoated Cobalt Steel | ||||||||||
6.5 mm | 0.2559" | 102mm | 63mm | Round | 6.5mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000 |
6.7 mm | 0.2638" | 102mm | 63mm | Round | 6.7mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000 |
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.
Maintenance-length drill bits are shorter and more rigid than jobbers'-length bits but longer than short-length bits. They hold up better than jobbers' bits when drilling in hard metal. Also known as mechanics' 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 | No. of Coolant Holes | For Use On | Each | |
Metric—Jobbers' Length | ||||||||||
Titanium-Aluminum-Nitride (TiAlN) Coated Carbide | ||||||||||
8.5 mm | 0.3346" | 102mm | 61mm | Round | 10mm | Four Facet | 2 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 0000000 |
9.0 mm | 0.3543" | 102mm | 61mm | Round | 10mm | Four Facet | 2 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 000000 |
9.5 mm | 0.374" | 102mm | 61mm | Round | 10mm | Four Facet | 2 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 000000 |
10.0 mm | 0.3937" | 102mm | 61mm | Round | 10mm | Four Facet | 2 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
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 | |||||||||
6.0 mm | 0.2362" | 102mm | Round | 6mm | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 53.3mm | 118° | 00000000 | 000000 |
Split Point | |||||||||
Metric | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
6.0 mm | 0.2362" | 102mm | Round | 6mm | Iron, Aluminum, Brass, Bronze, Plastic | 70mm | 135° | 00000000 | 00000 |
Short-Length Carbide-Tipped Drill Bits
Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than standard-length drill bits. 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.
For technical drawings and 3-D models, click on a part number.
Shank | Standard Point | ||||||||
---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | For Use On | Point Angle | Each | |
Metric | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
14.0 mm | 0.5512" | 102mm | 42mm | Round | 14mm | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 118° | 000000000 | 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.
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 | |||||||||
6.0 mm | 0.2362" | 102mm | 24mm | Round | 6mm | Notched | Rockwell C60 | 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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
6.0 mm | 0.2362" | 102mm | 70mm | Round | 6mm | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | NAS907 Type J | 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.
For technical drawings and 3-D models, click on a part number.
Shank | 90° Point Angle | ||||||||
---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | For Use On | Each | |
Metric | |||||||||
Uncoated Cobalt Steel | |||||||||
12.0 mm | 0.4724" | 102mm | 31.7mm | Round | 12mm | Standard | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |