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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
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Jobbers' Length Round Shank |
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Jobbers' Length Morse Taper Shank |
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Short Length Round Shank |
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Extended Length Round Shank |
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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.
Short Length—The most rigid bits for drilling the straightest holes.
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.
Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.
Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're 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 | |||||||||||
Black Oxide | |||||||||||
| 21/32" | 0.6563" | 7 1/8" | 4.2" | Round | 21/32" | Standard | Chicago-Latrobe | 2931A54 | 000000 | ||
| 21/32" | 0.6563" | 9" | 4.14" | Morse Taper | Morse 2 | Standard | Chicago-Latrobe | 2929A385 | 00000 | ||
Titanium Nitride (TiN) Coated | |||||||||||
| 21/32" | 0.6563" | 7 1/8" | 4.2" | Round | 21/32" | Standard | Chicago-Latrobe | 3022A73 | 00000 | ||
Uncoated | |||||||||||
| 21/32" | 0.6563" | 7 1/8" | 4.2" | Round | 21/32" | Standard | Viking Norseman Drill | 8870A56 | 00000 | ||
Short Length | |||||||||||
Uncoated | |||||||||||
| 21/32" | 0.6563" | 4 1/2" | 1.89" | Round | 21/32" | Standard | Chicago-Latrobe | 8947A251 | 00000 | ||
Extended Length | |||||||||||
Black Oxide | |||||||||||
| 21/32" | 0.6563" | 9" | 4.14" | Round | 21/32" | Standard | Chicago-Latrobe | 29315A175 | 00000 | ||
| 21/32" | 0.6563" | 12" | 7.68" | Round | 21/32" | Standard | Dormer Pramet | 2939A48 | 00000 | ||
Reduced-Shank High-Speed Steel Drill Bits
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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 | |||||||||||
| 21/32" | 0.6563" | 6" | 2.1" | Reduced Round | 1/2" | Standard | Chicago-Latrobe | 2933A29 | 000000 | ||
| 21/32" | 0.6563" | 6" | 2.1" | Reduced Round/3-Flat | 1/2" | Split | Viking Norseman Drill | 2905A21 | 00000 | ||
Extended Length | |||||||||||
Black Oxide | |||||||||||
| 21/32" | 0.6563" | 12" | 9" | Reduced Round | 1/2" | Standard | Republic Drill | 2464A18 | 00000 | ||
| 21/32" | 0.6563" | 18" | 12" | Reduced Round | 1/2" | Standard | Republic Drill | 2464A48 | 000000 | ||
Reduced-Shank Cobalt Steel Drill Bits
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Jobbers' Length | Split |
Cobalt Steel Drill Bits
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Jobbers' Length Round Shank |
 |
Jobbers' Length Morse Taper Shank |
 |
Extended Length Round Shank |
|
Split |
Tough and wear resistant, 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.
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.
Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.
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 | |||||||||||
Titanium Nitride (TiN) Coated | |||||||||||
| 21/32" | 0.6563" | 7 1/8" | 5.19" | Round | 21/32" | Split | Dormer Pramet | 27995A553 | 000000 | ||
Uncoated | |||||||||||
| 21/32" | 0.6563" | 7 1/8" | 4.2" | Round | 21/32" | Split | Chicago-Latrobe | 3069A91 | 00000 | ||
| 21/32" | 0.6563" | 9 3/4" | 5.13" | Morse Taper | Morse 3 | Split | Republic Drill | 3068A25 | 00000 | ||
Extended Length | |||||||||||
Uncoated | |||||||||||
| 21/32" | 0.6563" | 9" | 3.81" | Round | 21/32" | Split | Dormer Pramet | 3063A153 | 000000 | ||
Reduced-Shank Carbide-Tipped Drill Bits
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Jobbers' Length |
|
Standard |
Our hardest reduced-shank bits, these stay sharp at high temperatures and faster speeds. The shank is smaller than the cutting tip to make large holes with drill presses and portable drills that have a standard-size chuck. They offer the best performance on hard and abrasive materials, such as titanium. Also known as Silver and Deming bits.
Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Uncoated | |||||||||||
| 21/32" | 0.6563" | 6" | 2.1" | Reduced Round | 1/2" | Standard | Rock River Tool | 8871A16 | 0000000 | ||
Carbide-Tipped Drill Bits
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Extended Length Round Shank |
|
Standard |
Performance similar to solid carbide but at a lower price point. Like carbide bits, these are stronger than cobalt and high-speed steel and maintain their sharp edges when drilling abrasive material. However, when drilling tough metals like iron and hardened steel, upgrade to carbide for longer life.
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.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Extended Length | |||||||||||
Uncoated | |||||||||||
| 21/32" | 0.6563" | 9" | 4.14" | Round | 21/32" | Standard | ICS | 29465A48 | 000000 | ||
High-Speed Steel Precise-Cut Drill Bits for Wood
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Wear and heat resistant, these stay sharp longer than precise-cut bits made of plain steel. The sharp center point keeps the bit from wandering during drilling to cut accurate straight and overlapping holes, even across the grain. Also known as brad-point bits.
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Shank Size | Drill Bit Point Type | Mfr. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|
Uncoated | ||||||||||
Round Shank | ||||||||||
| 21/32" | 0.6563" | 6" | 3" | 1/2" | Brad | W. L. Fuller | 2926A83 | 000000 | ||
Drill Taps
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Straight Flute |
Thread | Drill Bit | Plug Chamfer | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Size | Lg. | Overall Lg. | Size | Decimal Size Equiv. | Point Angle | Flute Type | No. of Flutes | Thread Type | Pitch Dia. Limit | Each | |||
Uncoated High-Speed Steel | |||||||||||||
| 3/4"-10 | 2" | 6" | 21/32" | 0.6563" | 110° | Straight | 4 | UNC | H3 | 2748A12 | 0000000 | ||
Helical Threaded Insert Assortments with Installation Tools
 |
Repair damaged threads or create new ones. These convenient assortments include helical inserts, an installation tool for each thread size, a drill bit, and a tap. The inserts are also known as Heli-Coil inserts.
Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
No. of Inserts Included | Includes | Thread Spacing | Drill Bit Size | For Max. Hole Dia. | Each | |||
|---|---|---|---|---|---|---|---|---|
Pronged | ||||||||
18-8 Stainless Steel | ||||||||
| 54 | 1/4"-20 Thread × 3/8" Installed Lg. (12 Each) 5/16"-18 Thread × 0.469" Installed Lg. (12 Each) 3/8"-16 Thread × 0.562" Installed Lg. (12 Each) 7/16"-14 Thread × 0.656" Installed Lg. (6 Each) 1/2"-13 Thread × 3/4" Installed Lg. (6 Each) 5/8"-11 Thread × 15/16" Installed Lg. (6 Each) Drill Bits Installation Tools Through-Hole Taps | Coarse | 17/64" 21/64" 25/64" 29/64" 17/32" 21/32" | 0.266" 0.328" 0.391" 0.453" 0.531" 0.656" | 90285A121 | 0000000 | ||
Helical Threaded Inserts with Installation Tools
 |
Drill Bit, Installation Tool and Through-Hole Tap |
Quickly restore stripped threads—these inserts come with through-hole taps and installation tools. The tough coils on these inserts expand once installed to anchor in a tapped hole.
Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | No. of Inserts Included | Includes | Each | |||
|---|---|---|---|---|---|---|---|---|---|
Pronged | |||||||||
18-8 Stainless Steel | |||||||||
| 5/8"-11 | 0.625" | 21/32" | 0.656" | 6 | Drill Bit Installation Tool Through-Hole Tap | 98356A148 | 0000000 | ||
| 5/8"-11 | 0.938" | 21/32" | 0.656" | 6 | Drill Bit Installation Tool Through-Hole Tap | 91732A018 | 000000 | ||
| 5/8"-11 | 1.250" | 21/32" | 0.656" | 6 | Drill Bit Installation Tool Through-Hole Tap | 98356A149 | 000000 | ||
| M16 x 2 mm | 24 mm | 21/32" | 0.656" | 6 | Drill Bit Installation Tool Through-Hole Tap | 91732A071 | 000000 | ||
Depth-Limiting Drill Stops
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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 | |||||||||
| 21/32" | 0.6563" | 1 1/8" | 1 1/8" | 5/32" | Steel | 8865A245 | 000000 | ||
Tight-Tolerance Water-Hardening W1 Tool Steel Rods
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Ready for turning in your lathe, these rods are precision ground and held to strict diameter and straightness tolerances. Also known as drill rod. With far less alloy content than other tool steel, W1 is the most machinable we offer. These rods are often used to make hammers, files, and reamers—tools that don't require the dimensional stability of A2 or O1. These rods are also decarb-free, which means any surface flaws created during the manufacturing process have been removed. This makes them even more machinable and leads to better results from heat treating or finishing. Heat treat the surface for extra wear resistance. Or, quench this steel in water to boost its hardness and strength, giving it a sharper, more durable edge for small tools.
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Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dia. | Dia. Tolerance | Drill Bit Size | Fabrication | Heat Treatment | Yield Strength, psi | Mechanical Finish | Hardness | Max. Hardness After Heat Treatment | Specs. Met | 1 ft. Long | 3 ft. Long | 6 ft. Long | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.6563" | -0.001" to 0.001" | 21/32" | Hot Rolled | Annealed | 50,000 | Precision Ground | Rockwell B95 (Medium) | Rockwell C65 | ASTM A686 | 8890K12 | 000000 | 000000 | 000000 |
Thread-Locking Threaded Inserts with Installation Tools
 |
What you need to add or repair threads quickly in parts under stress or vibration. These inserts come with a closed-end tap, a drill bit, and an installation bit. Also known as E-Z Lok, they have Loctite® adhesive already applied, and the adhesive reaches full strength after 72 hours.
Standard Wall—Stronger than thin-wall inserts, these are your go-to choice for threading most holes.
Black Phosphate-Coated Steel—These inserts resist occasional moisture.
Thread Size | For Tap Thread Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | Drive Style | No. of Inserts Included | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|
Standard Wall | ||||||||||
Black Phosphate-Coated Steel | ||||||||||
| 1/2"-13 | 3/4"-10 | 0.656" | 21/32" | 0.656" | Slotted | 10 | 95109A114 | 0000000 | ||
Helical Threaded Inserts for Pipe Threads with Installation Tools
 |
Fix stripped pipe threads fast—these inserts come with drill bits, through-hole taps, and installation tools. Also known as Heli-Coil inserts.
Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
Pipe Size | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | No. of Inserts Included | Includes | Each | |||
|---|---|---|---|---|---|---|---|---|---|
Pronged NPT Thread | |||||||||
18-8 Stainless Steel | |||||||||
| 3/8 | 0.407" | 21/32" | 0.656" | 10 | Drill Bit Installation Tool Through-Hole Tap | 91733A423 | 0000000 | ||
