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About Drill Bits
Compare material, finish, length class, and decimal size equivalents.
High-Speed Steel Drill Bits
Jobbers' Length Round Shank | Short Length Round Shank |
Standard |
Split |
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Type | Size | Drill Bit Point Type | Each | |||
Jobbers' Length | ||||||||||
Black Oxide | ||||||||||
| 2.3 | 0.0906" | 53 | 27 | Round | 2.3 mm | Standard | 2958A52 | 00000 | ||
Titanium Nitride (TiN) Coated | ||||||||||
| 2.3 | 0.0906" | 53 | 22.4 | Round | 2.3 mm | Standard | 8950A41 | 0000 | ||
Gold Oxide | ||||||||||
| 2.3 | 0.0906" | 57 | 25.4 | Round | 2.3 mm | Split | 30565A239 | 0000 | ||
Short Length | ||||||||||
Titanium Nitride (TiN) Coated | ||||||||||
| 2.3 | 0.0906" | 40 | 5.7 | Round | 2.3 mm | Split | 2979N47 | 0000 | ||
Cobalt Steel Drill Bits
Jobbers' Length Round Shank | Split |
Shank | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Type | Size | Drill Bit Point Type | Each | |||
Jobbers' Length | ||||||||||
Titanium Nitride (TiN) Coated | ||||||||||
| 2.3 | 0.0906" | 53 | 27 | Round | 2.3 mm | Split | 5058N22 | 00000 | ||
Titanium Aluminum Nitride (TiAlN) Coated | ||||||||||
| 2.3 | 0.0906" | 53 | 27 | Round | 2.3 mm | Split | 2753A224 | 00000 | ||
Gold Oxide | ||||||||||
| 2.3 | 0.0906" | 53 | 22.4 | Round | 2.3 mm | Split | 29355A39 | 0000 | ||
Chip-Clearing Cobalt Steel Drill Bits
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size, mm | Decimal Size Equiv. | Overall Lg., mm | Max. Drilling Dp., mm | Flute Type | Type | Size, mm | Drill Bit Point Type | Each | |||
Jobbers' Length | |||||||||||
Uncoated | |||||||||||
| 2.3 | 0.0906" | 57 | 30 | Parabolic | Round | 2.3 | Split | 2771N721 | 00000 | ||
Tight-Tolerance Water-Hardening W1 Tool Steel Rods
Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods
Dia., mm | Dia. Tolerance, mm | Drill Bit Size, mm | Lg. | Yield Strength | Hardness | Mechanical Finish | Each | ||
|---|---|---|---|---|---|---|---|---|---|
| 2.3 | -0.005 to 0 | 2.3 | 2 1/4" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 2900A241 | 00000 |



























