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About Drill Bits
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Compare material, finish, length class, and decimal size equivalents.
High-Speed Steel Drill Bits
 |  |
Jobbers' Length Morse Taper Shank | Standard |
Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.
Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Black Oxide | |||||||||||
| 12.0 | 0.4724" | 182 | 77 | Morse Taper | Morse 1 | Standard | Dormer Pramet | 3070A351 | 0000000 | ||
| 12.5 | 0.4921" | 182 | 50 | Morse Taper | Morse 1 | Standard | Cle-Line | 3070A72 | 00000 | ||
| 12.8 | 0.504" | 182 | 51 | Morse Taper | Morse 1 | Standard | Cle-Line | 3070A73 | 00000 | ||
