System of Measurement System of Measurement |
---|
|
Decimal Size Equivalent Decimal Size Equivalent |
---|
|
|
|
Length Class Length Class |
---|
![]() |
Jobbers' Length |
![]() |
Short Length |
![]() |
Maintenance Length |
For Use On For Use On |
---|
|
|
Material Material |
---|
|
Point Style Point Style |
---|
![]() |
Split |
![]() |
Standard |
![]() |
Four Facet |
Bit Style Bit Style |
---|
![]() | Spiral Flute |
![]() | Parabolic Spiral Flute |
Maximum Drilling Depth Maximum Drilling Depth | Show |
---|
|
Maximum Drilling Depth Maximum Drilling Depth | Hide |
---|
Shank Type Shank Type |
---|
![]() | Round |
Flute Direction Flute Direction |
---|
![]() |
Right Hand |
Individual/Set Individual/Set |
---|
|
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
---|
|
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
---|
|
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
---|
Number of Coolant Holes Number of Coolant Holes |
---|
|
Drill Bit Decimal Size Equivalents
More
About Drill Bits
More
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.
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 | |
Metric | ||||||||||
Black-Oxide High-Speed Steel | ||||||||||
10.8 mm | 0.4252" | 95mm | 47mm | Round | 10.8mm | Split | DIN 1897 | Steel, Iron, Stainless Steel | 000000000 | 00000 |
11.2 mm | 0.4409" | 95mm | 47mm | Round | 11.2mm | Split | DIN 1897 | Steel, Iron, Stainless Steel | 000000000 | 00000 |
11.5 mm | 0.4528" | 95mm | 47mm | Round | 11.5mm | Split | DIN 1897 | Steel, Iron, Stainless Steel | 000000000 | 0000 |
11.8 mm | 0.4646" | 95mm | 47mm | Round | 11.8mm | Split | DIN 1897 | Steel, Iron, Stainless Steel | 000000000 | 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 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
4.5 mm | 0.1772" | 79mm | 47mm | Round | 4.5mm | Split | DIN 338 | Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 0000000 | 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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
4.3 mm | 0.1693" | 80mm | 47mm | Round | 4.3mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
4.4 mm | 0.1732" | 80mm | 47mm | Round | 4.4mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 0000 |
4.5 mm | 0.1772" | 79mm | 47mm | Round | 4.5mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000 |
4.55 mm | 0.1791" | 80mm | 47mm | Round | 4.55mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 0000 |
4.6 mm | 0.1811" | 80mm | 47mm | Round | 4.6mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 0000 |
4.75 mm | 0.187" | 80mm | 47mm | Round | 4.75mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 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.
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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Style | No. of Coolant Holes | For Use On | Each | |
Metric—Maintenance Length | ||||||||||
Titanium-Aluminum-Nitride (TiAlN) Coated Carbide | ||||||||||
8.5 mm | 0.3346" | 89mm | 47mm | Round | 10mm | Four Facet | 2 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 0000000 |
9.0 mm | 0.3543" | 89mm | 47mm | Round | 10mm | Four Facet | 2 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 000000 |
10.0 mm | 0.3937" | 89mm | 47mm | Round | 10mm | Four Facet | 2 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 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.
For technical drawings and 3-D models, click on a part number.
Shank | Standard Point | ||||||||
---|---|---|---|---|---|---|---|---|---|
Size | Decimal Size Equivalent | Overall Lg. | Type | Size | For Use On | Max. Drilling Dp. | Point Angle | Each | |
Metric | |||||||||
Uncoated Carbide-Tipped Steel | |||||||||
4.2 mm | 0.1654" | 89mm | Round | 4.2mm | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 47mm | 118° | 00000000 | 000000 |
4.5 mm | 0.1772" | 89mm | Round | 4.5mm | Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic | 47mm | 118° | 00000000 | 00000 |