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Compare material, finish, length class, and decimal size equivalents.
Reduced-Shank High-Speed Steel Drill Bits
 |
Jobbers' Length |
 |
Extended Length |
 |  |
Standard | Split |
Cut large holes with drill presses and portable drills that have a standard-size chuck. The shank on these bits has a smaller diameter than the cutting tip. High-speed steel is good for general purpose drilling in most metals. Also known as Silver and Deming bits.
Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
Extended Length—Drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard materials.
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 | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Black Oxide | |||||||||||
| 45/64" | 0.7031" | 6" | 2.1" | Reduced Round | 1/2" | Standard | Chicago-Latrobe | 2933A57 | 000000 | ||
| 45/64" | 0.7031" | 6" | 2.1" | Reduced Round/3-Flat | 1/2" | Split | Viking Norseman Drill | 2905A24 | 00000 | ||
Extended Length | |||||||||||
Black Oxide | |||||||||||
| 45/64" | 0.7031" | 12" | 9" | Reduced Round | 1/2" | Standard | Republic Drill | 2464A21 | 000000 | ||
| 45/64" | 0.7031" | 18" | 12" | Reduced Round | 1/2" | Standard | Republic Drill | 2464A51 | 000000 | ||
High-Speed Steel Drill Bits
 |
Jobbers' Length Morse Taper Shank |
 |
Extended Length Round 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.
Extended Length—Drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard materials.
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 | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Black Oxide | |||||||||||
| 45/64" | 0.7031" | 9 1/2" | 4.57" | Morse Taper | Morse 2 | Standard | Chicago-Latrobe | 2929A393 | 000000 | ||
Extended Length | |||||||||||
Black Oxide | |||||||||||
| 45/64" | 0.7031" | 9 1/2" | 4.57" | Round | 45/64" | Standard | Chicago-Latrobe | 29315A182 | 00000 | ||
Reduced-Shank Cobalt Steel Drill Bits
 |
Jobbers' Length |
|
Split |
More wear resistant than high-speed steel, these bits cut large holes with tools that have a standard-size chuck. The shank has a smaller diameter than the cutting tip and fits drill presses and portable drills. Cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials such as nickel. Also known as Silver and Deming bits.
Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
Uncoated—Polished to eject chips, these are also known as bright finish bits.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Uncoated | |||||||||||
| 45/64" | 0.7031" | 6" | 2.1" | Reduced Round | 1/2" | Split | Chicago-Latrobe | 8939A48 | 000000 | ||
Pipe and Conduit Drill Taps
 |
Drill and thread holes for pipe and conduit without switching tools. Made of uncoated high-speed steel, these tools are for use on most metal and plastic. Their right-hand spiral flutes keep chips clear by drawing them back toward the tap and out of the hole. With a square shank, they're compatible with tap wrenches and tap holders for drill presses and milling machines. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping of through holes.
Drill Bit | Plug Chamfer | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Threads per In. | Thread Lg. | Overall Lg. | Size | Decimal Size Equiv. | Point Angle | Flute Type | No. of Flutes | Thread Type | Each | |||
Uncoated High-Speed Steel | |||||||||||||
| 1/2 | 14 | 1 3/8" | 4 3/8" | 45/64" | 0.7031" | 118° | Spiral | 4 | NPTF | 2655A25 | 0000000 | ||
Depth-Limiting Drill Stops
 |
For Drill Bit Size | For Drill Bit Size Decimal Equiv. | Overall Lg. | OD | Hex Key Size for Set Screw | Material | Each | |||
|---|---|---|---|---|---|---|---|---|---|
For Inch Drill Bits | |||||||||
| 45/64" | 0.7031" | 1 1/8" | 1 1/8" | 5/32" | Steel | 8865A247 | 000000 | ||
