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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 | Maintenance Length Round Shank 3-Flat Shank |
Split |
Standard |
Shank | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Pkg. Qty. | Pkg. | |||
Jobbers' Length | ||||||||||||
Black Oxide | ||||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.96" | Round | 23/64" | Split | Chicago-Latrobe | 1 | 2901A132 | 000000 | ||
| 23/64" | 0.3594" | 4 7/8" | 2.96" | Round | 23/64" | Split | Chicago-Latrobe | 6 | 2901A583 | 00000 | ||
| S | 0.348" | 4 7/8" | 2.97" | Round | 0.348" | Split | Chicago-Latrobe | 1 | 2901A163 | 00000 | ||
| S | 0.348" | 4 7/8" | 2.97" | Round | 0.348" | Split | Chicago-Latrobe | 6 | 2901A553 | 00000 | ||
| T | 0.358" | 4 7/8" | 2.96" | Round | 0.358" | Split | Chicago-Latrobe | 1 | 2901A164 | 00000 | ||
Titanium Nitride (TiN) Coated | ||||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.96" | Round | 23/64" | Split | Chicago-Latrobe | 1 | 29115A732 | 00000 | ||
| 23/64" | 0.3594" | 4 7/8" | 2.96" | Round | 23/64" | Split | Chicago-Latrobe | 6 | 29115A832 | 00000 | ||
| S | 0.348" | 4 7/8" | 2.97" | Round | 0.348" | Split | Chicago-Latrobe | 1 | 3199A41 | 00000 | ||
| T | 0.358" | 4 7/8" | 2.96" | Round | 0.358" | Split | Chicago-Latrobe | 1 | 3199A42 | 00000 | ||
Titanium Aluminum Nitride (TiAlN) Coated | ||||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.96" | Round | 23/64" | Split | Chicago-Latrobe | 1 | 3202A65 | 00000 | ||
| S | 0.348" | 4 7/8" | 2.97" | Round | 0.348" | Split | Chicago-Latrobe | 1 | 3180A41 | 00000 | ||
| T | 0.358" | 4 7/8" | 2.96" | Round | 0.358" | Split | Chicago-Latrobe | 1 | 3180A42 | 00000 | ||
Uncoated | ||||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.96" | Round | 23/64" | Standard | Viking Norseman Drill | 1 | 8870A35 | 0000 | ||
| 23/64" | 0.3594" | 4 7/8" | 2.96" | Round | 23/64" | Standard | Viking Norseman Drill | 6 | 8870A135 | 00000 | ||
| S | 0.348" | 4 7/8" | 2.97" | Round | 0.348" | Standard | Viking Norseman Drill | 1 | 30595A51 | 0000 | ||
| S | 0.348" | 4 7/8" | 2.97" | Round | 0.348" | Standard | Viking Norseman Drill | 6 | 30595A78 | 00000 | ||
| T | 0.358" | 4 7/8" | 2.96" | Round | 0.358" | Standard | Viking Norseman Drill | 1 | 30595A52 | 0000 | ||
Maintenance Length | ||||||||||||
Black/Gold Oxide | ||||||||||||
| 31/64" | 0.4844" | 4 7/8" | 3.21" | Round/3-Flat | 31/64" | Split | Viking Norseman Drill | 1 | 87755A51 | 00000 | ||
Cobalt Steel Drill Bits
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Titanium Nitride (TiN) Coated | |||||||||||
| 23/64" | 0.3594" | 4 7/8" | 3.5" | Round | 23/64" | Split | Dormer Pramet | 27995A532 | 000000 | ||
| S | 0.348" | 4 7/8" | 3.5" | Round | 0.348" | Split | Dormer Pramet | 27995A858 | 00000 | ||
| T | 0.358" | 4 7/8" | 3.5" | Round | 0.358" | Split | Dormer Pramet | 27995A859 | 00000 | ||
Titanium Aluminum Nitride (TiAlN) Coated | |||||||||||
| 11/32" | 0.3438" | 4 7/8" | 2.67" | Round | 11/32" | Split | Guhring | 2753A143 | 00000 | ||
| 23/64" | 0.3594" | 4 7/8" | 3.5" | Round | 23/64" | Split | Chicago-Latrobe | 3069A94 | 00000 | ||
Uncoated | |||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.48" | Hex | 23/64" | Split | Cle-Line | 4909N23 | 00000 | ||
| 23/64" | 0.3594" | 4 7/8" | 2.9" | Round | 23/64" | Split | Chicago-Latrobe | 3069A33 | 00000 | ||
| S | 0.348" | 4 7/8" | 2.97" | Round | 0.348" | Split | Chicago-Latrobe | 3069A71 | 00000 | ||
| T | 0.358" | 4 7/8" | 2.96" | Round | 0.358" | Split | Chicago-Latrobe | 3069A72 | 00000 | ||
Anchor Installation Drill Bits for Masonry and Concrete
Chip-Clearing Cobalt Steel Drill Bits
Shank | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Flute Type | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | ||||||||||||
Titanium Nitride (TiN) Coated | ||||||||||||
| 11/32" | 0.3438" | 4 7/8" | 3.1" | Parabolic | Round | 11/32" | Split | Viking Norseman Drill | 3183A61 | 000000 | ||
| 23/64" | 0.3594" | 4 7/8" | 3.1" | Parabolic | Round | 23/64" | Split | Viking Norseman Drill | 3183A62 | 00000 | ||
Uncoated | ||||||||||||
| 11/32" | 0.3438" | 4 7/8" | 3.1" | Parabolic | Round | 11/32" | Split | Viking Norseman Drill | 29925A931 | 00000 | ||
| 23/64" | 0.3594" | 4 7/8" | 3.1" | Parabolic | Round | 23/64" | Split | Viking Norseman Drill | 29925A932 | 00000 | ||
| R | 0.339" | 4 7/8" | 3.19" | Parabolic | Round | 0.339" | Split | Viking Norseman Drill | 2771N29 | 00000 | ||
| S | 0.348" | 4 7/8" | 3.19" | Parabolic | Round | 0.348" | Split | Viking Norseman Drill | 2771N31 | 00000 | ||
| T | 0.358" | 4 7/8" | 3.19" | Parabolic | Round | 0.358" | Split | Viking Norseman Drill | 2771N32 | 00000 | ||
| U | 0.368" | 4 7/8" | 3.19" | Parabolic | Round | 0.368" | Split | Viking Norseman Drill | 2771N33 | 00000 | ||
| V | 0.377" | 4 7/8" | 3.43" | Parabolic | Round | 0.377" | Split | Viking Norseman Drill | 2771N34 | 00000 | ||
Carbide-Tipped Drill Bits
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Uncoated | |||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.9" | Round | 23/64" | Standard | ICS | 2940A29 | 000000 | ||
| 23/64" | 0.3594" | 4 7/8" | 2.9" | Round | 23/64" | Split | ICS | 31575A36 | 00000 | ||
| S | 0.348" | 4 7/8" | 2.9" | Round | 0.348" | Standard | ICS | 2940A529 | 00000 | ||
| S | 0.348" | 4 7/8" | 3" | Round | 0.348" | Split | ICS | 31575A531 | 00000 | ||
| T | 0.358" | 4 7/8" | 2.9" | Round | 0.358" | Standard | ICS | 2940A531 | 00000 | ||
| T | 0.358" | 4 7/8" | 3" | Round | 0.358" | Split | ICS | 31575A532 | 00000 | ||
High-Speed Steel Drill Bits for Plastic
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Reduced-Shank High-Speed Steel Drill Bits
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Black Oxide | |||||||||||
| 15/32" | 0.4688" | 4 7/8" | 3.13" | Reduced Round | 1/4" | Standard | Viking Norseman Drill | 3038A25 | 000000 | ||
Short-Flute Cobalt Steel Drill Bits
Shank | Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | 1-4 | 5-Up | |||
Jobbers' Length | ||||||||||||
Black Oxide | ||||||||||||
| 23/64" | 0.3594" | 4 7/8" | 1.21" | Round | 23/64" | Split | Cleveland | 3146A133 | 000000 | 000000 | ||
Chip-Clearing High-Speed Steel Drill Bits
Shank | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Flute Type | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | ||||||||||||
Black Oxide | ||||||||||||
| 11/32" | 0.3438" | 4 7/8" | 2.49" | High Helix | Round | 11/32" | Split | Dormer Pramet | 31115A61 | 00000 | ||
| 23/64" | 0.3594" | 4 7/8" | 2.46" | High Helix | Round | 23/64" | Split | Dormer Pramet | 31115A62 | 00000 | ||
| 23/64" | 0.3594" | 4 7/8" | 2.78" | Parabolic | Round | 23/64" | Split | Chicago-Latrobe | 29925A32 | 00000 | ||
Titanium Nitride (TiN) Coated | ||||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.78" | Parabolic | Round | 23/64" | Split | Chicago-Latrobe | 29925A72 | 00000 | ||
Uncoated | ||||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.78" | Parabolic | Round | 23/64" | Split | Dormer Pramet | 2754A62 | 00000 | ||
Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods
Dia. | Dia. Tolerance | Drill Bit Size | Lg. | Yield Strength | Hardness | Mechanical Finish | Each | ||
|---|---|---|---|---|---|---|---|---|---|
| 0.348" | -0.0002" to 0" | S | 4 7/8" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 3009A202 | 00000 | |
| 0.358" | -0.0002" to 0" | T | 4 7/8" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 3009A203 | 0000 | |
| 0.3594" | -0.0002" to 0" | 23/64" | 4 7/8" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 3009A135 | 0000 | |
| 8.8 mm | -0.005 mm to 0 mm | 8.8 mm | 4 7/8" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 2900A367 | 0000 | |
| 8.9 mm | -0.005 mm to 0 mm | 8.9 mm | 4 7/8" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 2900A368 | 0000 | |
| 9 mm | -0.005 mm to 0 mm | 9 mm | 4 7/8" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 2900A369 | 00000 | |
| 9.1 mm | -0.005 mm to 0 mm | 9.1 mm | 4 7/8" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 2900A371 | 00000 |
Chip-Clearing High-Speed Steel Drill Bits for Aluminum, Brass, and Bronze
Shank | Each | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Flute Type | Type | Size | Drill Bit Point Type | Mfr. | 1-5 | 6-Up | |||
Jobbers' Length | |||||||||||||
Uncoated | |||||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.78" | Low Helix | Round | 23/64" | Standard | Chicago-Latrobe | 2928A232 | 000000 | 000000 | ||
Impact Wrench Step Reamer Drill Bit Sets
Lg. | Shank | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sizes Included | No. of Pieces | Max. Drilling Dp. | Drill Bit Point Type | Flute | Overall | No. of Flutes | Flute Type | Spiral Direction | Cutting Dia. Tolerance | Type | Size | Features | Container Type | For Use On | Mfr. | Each | |||
Titanium Nitride (TiN)-Coated Hardened High-Speed Steel | |||||||||||||||||||
Inch | |||||||||||||||||||
| 1 each in sizes 5/16"-9/16", 9/16"-13/16", 13/16"-1 1/16" | 3 | 1/2" | Stepped | 3 3/8", 3 5/8", 3 3/4" | 4 3/8", 4 5/8", 4 7/8" | 1 | Spiral | Right Hand | -0.002" to 0.002" | VersaDrive Hex | 7/16" | Safety Collar | Foam Tray | Aluminum, Brass, Iron, Stainless Steel, Steel | Holemaker Technology | 9646N11 | 0000000 | ||
Impact Wrench Step Reamer Drill Bits
Lg. | Shank | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Reamer Dia. | Max. Drilling Dp. | Flute | Overall | Drill Bit Point Type | No. of Flutes | Flute Type | Spiral Direction | Cutting Dia. Tolerance | Type | Size | Features | For Use On | Mfr. | Each | |||
Titanium Nitride (TiN)-Coated Hardened High-Speed Steel | |||||||||||||||||
Inch | |||||||||||||||||
| 13/16", 7/8", 15/16", 1", 1 1/16" | 1/2" | 3 3/4" | 4 7/8" | Stepped | 1 | Spiral | Right Hand | -0.002" to 0.002" | VersaDrive Hex | 7/16" | Safety Collar | Aluminum, Brass, Iron, Stainless Steel, Steel | Holemaker Technology | 9686N13 | 0000000 | ||
Left-Hand High-Speed Steel Drill Bits
Jobbers' Length Round Shank | Split |
Shank | Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | 1-5 | 6-Up | |||
Jobbers' Length | ||||||||||||
Uncoated | ||||||||||||
| 23/64" | 0.3594" | 4 7/8" | 2.78" | Round | 23/64" | Split | ICS | 2876A341 | 000000 | 000000 | ||
Tight-Tolerance Ultra-Heat-Resistant M42 High-Speed Tool Steel Rods
Dia. | Dia. Tolerance | Lg. | Yield Strength | Hardness | Mechanical Finish | Each | ||
|---|---|---|---|---|---|---|---|---|
| 23/64" | -0.0002" to 0" | 4 7/8" | Not Rated | Rockwell C65 (Extra Hard) | Precision Ground | 8813A66 | 000000 |
Oversized Hardened Multipurpose M2 High-Speed Tool Steel Rods
Dia. | Dia. Tolerance | Reamer Size | Lg. | Fabrication | Yield Strength | Hardness | Mechanical Finish | Each | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.348" | 0" to 0.0002" | S | 4 7/8" | Hot Rolled | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 3023A302 | 00000 | |
| 0.358" | 0" to 0.0002" | T | 4 7/8" | Hot Rolled | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 3023A303 | 0000 | |
| 0.3594" | 0" to 0.0002" | 23/64" | 4 7/8" | Hot Rolled | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 3023A235 | 0000 |


































