System of Measurement System of Measurement |
---|
|
Drill Bit Size Drill Bit Size | Show |
---|
|
Drill Bit Size Drill Bit Size | Hide |
---|

Decimal Size Equivalent Decimal Size Equivalent |
---|
|
Length Class Length Class |
---|
![]() |
Jobbers' Length |
![]() |
Short Length |
![]() |
Extended Length |
For Use On For Use On |
---|
|
|
Material Material |
---|
|
Finish Finish |
---|
|
Shank Type Shank Type |
---|
![]() | Round |
Individual/Set Individual/Set |
---|
|
Bit Style Bit Style |
---|
![]() | Spiral Flute |
![]() | Parabolic Spiral Flute |
Flute Direction Flute Direction |
---|
![]() |
Right Hand |
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
---|
|
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
---|
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
---|
|
Shank Size Shank Size |
---|
|
Shape Shape |
---|
![]() | Rod and Disc |
Tolerance Rating Tolerance Rating |
---|
|
About Tool Steel
More
Drill Bit Decimal Size Equivalents
More
About Drill Bits
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.
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 | ||||||||||
5.8 mm | 0.2283" | 93mm | 45.4mm | Round | 5.8mm | Standard | DIN 338 | Steel, Iron, Stainless Steel | 0000000 | 00000 |
Black-and-Gold Oxide High-Speed Steel | ||||||||||
5.8 mm | 0.2283" | 98mm | 63.5mm | Round | 5.8mm | Split | NAS907 Type B | Steel, Iron, Stainless Steel | 000000000 | 0000 |
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 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
5.8 mm | 0.2283" | 66mm | 28mm | Round | 5.8mm | Split | DIN 1897 | Steel, Iron, Stainless Steel | 000000000 | 00000 |
Extended-Length Drill Bits

Access hard-to-reach spots and drill deep holes.
Black-oxide drill bits produce less friction than uncoated drill bits.
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 | ||||||||||
5.8 mm | 0.2283" | 139mm | 91mm | Round | 5.8mm | Standard | Steel, Iron | DIN 340 | 000000000 | 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.
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 | ||||||||||
5.8 mm | 0.2283" | 98mm | 63.5mm | Round | 5.8mm | Split | NAS907 Type J | 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.
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 | ||||||||||
5.8 mm | 0.2283" | 93mm | 57mm | Round | 5.8mm | Split | DIN 338 | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
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 | |
5.8mm | -0.0050mm to 0.0000mm | 5.8 mm | 3 7/8" | Precision Ground | 0.012" per ft. | 00000000 | 00000 |