Compare material, finish, length class, and decimal size equivalents.
Cobalt Steel Drill Bit Sets
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.
| Number of Pieces | Drill Bit Sizes Included | Point Style | Specifications Met | For Use On | Each | |
Inch | ||||||
|---|---|---|---|---|---|---|
Uncoated Cobalt Steel | ||||||
| 13 | 1/16"-1/4" (increments of 1/64") | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
| 15 | 1/16"-1/2" (increments of 1/32") | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
| 21 | 1/16"-3/8" (increments of 1/64") | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
| 29 | 1/16"-1/2" (increments of 1/64") | Split | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated Cobalt Steel | ||||||
| 13 | 1/16"-1/4" (increments of 1/64") | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 00000 |
| 15 | 1/16"-1/2" (increments of 1/32") | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 000000 |
| 21 | 1/16"-3/8" (increments of 1/64") | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 000000 |
| 29 | 1/16"-1/2" (increments of 1/64") | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass | 00000000 | 000000 |
Wire Gauge | ||||||
Uncoated Cobalt Steel | ||||||
| 20 | 80-61 ga | Standard | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
| 60 | 60-53 ga 52-1 ga | Standard Split | NAS907 Type J NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Letter | ||||||
Uncoated Cobalt Steel | ||||||
| 26 | A-Z | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Metric | ||||||
Uncoated Cobalt Steel | ||||||
| 13 | 1.0 mm and 1.5mm, 2.0-7.0 mm (increments of 0.5 mm) | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 00000 |
| 19 | 1.0 mm and 1.5 mm, 2.0-10.0 mm (increments of 0.5 mm) | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |
| 25 | 1.0 mm and 1.5 mm, 2.0-13.0 mm (increments of 0.5 mm) | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |
| 41 | 6.0-10.0 mm (increments of 0.1 mm) | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 00000000 | 000000 |
Inch, Wire Gauge, Letter | ||||||
Uncoated Cobalt Steel | ||||||
| 115 | 1/16"-1/2" (increments of 1/64"), 52-1 ga, A-Z 60-53 ga | Split Standard | NAS907 Type J NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Inch, Wire Gauge, Metric | ||||||
Uncoated Cobalt Steel | ||||||
| 114 | 1/16"-1/2" (increments of 1/64") 60-1 ga 1.0-13.0 mm (increments of 0.5 mm) | Split | NAS907 Type J | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 00000000 |
Short-Flute Cobalt Steel Drill Bit Sets
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.
| Number of Pieces | Drill Bit Sizes Included | Point Style | Specifications Met | For Use On | Each | |
Inch | ||||||
|---|---|---|---|---|---|---|
Black-Oxide Cobalt Steel | ||||||
| 29 | 1/16"-1/2" (increments of 1/64") | Split | NAS907 Type D | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium | 00000000 | 0000000 |
Short-Length Cobalt Steel Drill Bit Sets
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.
| Number of Pieces | Drill Bit Sizes Included | Point Style | For Use On | Each | |
Inch | |||||
|---|---|---|---|---|---|
Uncoated Cobalt Steel | |||||
| 15 | 1/16"-1/2" (increments of 1/32") | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000000 |
| 29 | 1/16"-1/2" (increments of 1/64") | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Wire Gauge | |||||
Uncoated Cobalt Steel | |||||
| 60 | 60-53 ga 52-1 ga | Standard Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Letter | |||||
Uncoated Cobalt Steel | |||||
| 26 | A-Z | Split | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Cobalt Steel 1/2" Diameter Reduced-Shank Drill Bit Sets
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 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. Also known as Silver and Deming bits, they have a 1/2" diameter shank.
For technical drawings and 3-D models, click on a part number.
| Number of Pieces | Drill Bit Sizes Included | Shank Size | Point Style | For Use On | Each | |
Inch | ||||||
|---|---|---|---|---|---|---|
Uncoated Cobalt Steel | ||||||
| 8 | 9/16"-1" (increments of 1/16") | 1/2" | Split | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel | 0000000 | 0000000 |
Cobalt Steel Drill-Point Countersink Sets for Lathe Centers
With more heat and abrasion resistance than high-speed steel, cobalt steel is often used on hard-to-machine materials. The countersinks in this set have a 60° countersink angles that’s compatible with the profile of centers on a lathe. They have a small drill point on the tip for drilling and countersinking holes with the same tool. The drill point creates a small gap that prevents damage to the points of live or dead centers. Turn the countersink around for a sharp cutting edge when one end dulls.
For technical drawings and 3-D models, click on a part number.
60° Countersink Angle | ||||||||
|---|---|---|---|---|---|---|---|---|
| Countersink Trade Size | Number of Pieces | Number of Flutes | Number of Countersinking Ends | Shank Type | For Use On | Container Type | Each | |
Uncoated Cobalt Steel | ||||||||
| 1, 2, 3, 4, 5 | 5 | 2 | 2 | Round | Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | Plastic Case | 000000 | 000000 |