About Tool Steel
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Drill Bit Decimal Size Equivalents
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About Drill Bits
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Drill Bit Sets
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.
For technical drawings and 3-D models, click on a part number.
| No. of Pieces | Drill Bit Sizes Included | Point Style | Specifications Met | For Use On | Each | |
Wire Gauge | ||||||
|---|---|---|---|---|---|---|
Black-Oxide High-Speed Steel | ||||||
| 20 | 80-61 ga | Standard | NAS907 Type B | Steel, Iron, Stainless Steel | 0000000 | 000000 |
Titanium-Nitride (TiN) Coated High-Speed Steel | ||||||
| 20 | 80-61 ga | Standard | NAS907 Type B | Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic | 00000000 | 000000 |
Uncoated High-Speed Steel | ||||||
| 20 | 80-61 ga | Standard | ASME B94.11M, DIN 338 | Steel, Iron, Aluminum, Brass, Bronze, Plastic | 00000000 | 00000 |
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.
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 | |
Wire Gauge | ||||||
|---|---|---|---|---|---|---|
Uncoated Cobalt Steel | ||||||
| 20 | 80-61 ga | Standard | NAS907 Type J | Steel, Hardened Steel, Iron, Stainless Steel, Nickel | 0000000 | 000000 |
Hardened Undersized High-Speed M2 Tool Steel Rod Sets
- Hardness: Rockwell C60 (Very Hard)
- Yield Strength: Not Rated
Supplied in a metal index case with fold-out panels, these rods, also known as drill blanks, have an undersized diameter for machining your own jobbers'-length drill bits. They are 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.
| Includes | Number of Pieces | Dia. Tolerance | Mechanical Finish | Straightness Tolerance | Each | |
| Sizes 61-80 and a metal index case | 20 | -0.0002" to 0" | Precision Ground | 0.012" per ft. | 000000 | 000000 |