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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 Round Shank |
 |
Jobbers' Length Morse Taper Shank |
 |
Short Length Round 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.
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 | |||||||||||
| 17/32" | 0.5313" | 6 5/8" | 4.01" | Round | 17/32" | Standard | Chicago-Latrobe | 2931A45 | 000000 | ||
| 17/32" | 0.5313" | 8 1/2" | 3.82" | Morse Taper | Morse 2 | Standard | Chicago-Latrobe | 2929A372 | 00000 | ||
Titanium Nitride (TiN) Coated | |||||||||||
| 17/32" | 0.5313" | 6 5/8" | 4.01" | Round | 17/32" | Standard | Chicago-Latrobe | 3022A64 | 00000 | ||
Uncoated | |||||||||||
| 17/32" | 0.5313" | 6 5/8" | 4.01" | Round | 17/32" | Standard | Viking Norseman Drill | 8870A47 | 00000 | ||
Short Length | |||||||||||
Uncoated | |||||||||||
| 17/32" | 0.5313" | 3 7/8" | 1.57" | Round | 17/32" | Standard | Chicago-Latrobe | 8947A242 | 00000 | ||
Extended Length | |||||||||||
Black Oxide | |||||||||||
| 17/32" | 0.5313" | 8" | 3.95" | Round | 17/32" | Standard | Chicago-Latrobe | 29315A163 | 00000 | ||
| 17/32" | 0.5313" | 12" | 7.93" | Round | 17/32" | Standard | Dormer Pramet | 2939A39 | 00000 | ||
| 17/32" | 0.5313" | 18" | 11.93" | Round | 17/32" | Standard | Dormer Pramet | 2955A35 | 00000 | ||
Titanium Nitride (TiN) Coated | |||||||||||
| 17/32" | 0.5313" | 8" | 4.75" | Round | 17/32" | Standard | Dormer Pramet | 28965A817 | 00000 | ||
Uncoated | |||||||||||
| 17/32" | 0.5313" | 8" | 4.75" | Round | 17/32" | Standard | Dormer Pramet | 2939A83 | 00000 | ||
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.
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.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | |||||||||||
Black Oxide | |||||||||||
| 17/32" | 0.5313" | 6" | 2.1" | Reduced Round | 1/2" | Standard | Chicago-Latrobe | 2933A25 | 000000 | ||
| 17/32" | 0.5313" | 6" | 2.1" | Reduced Round/3-Flat | 1/2" | Split | Viking Norseman Drill | 2905A12 | 00000 | ||
Titanium Nitride (TiN) Coated | |||||||||||
| 17/32" | 0.5313" | 6" | 3.13" | Reduced Round | 1/2" | Standard | Viking Norseman Drill | 8512A23 | 00000 | ||
Extended Length | |||||||||||
Black Oxide | |||||||||||
| 17/32" | 0.5313" | 12" | 9" | Reduced Round | 1/2" | Standard | Republic Drill | 2464A11 | 00000 | ||
| 17/32" | 0.5313" | 18" | 12" | Reduced Round | 1/2" | Standard | Republic Drill | 2464A41 | 000000 | ||
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.
Titanium Aluminum Nitride (TiAlN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron, titanium, and fiberglass.
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 | |||||||||||
| 17/32" | 0.5313" | 6 5/8" | 4.81" | Round | 17/32" | Split | Dormer Pramet | 27995A544 | 000000 | ||
Titanium Aluminum Nitride (TiAlN) Coated | |||||||||||
| 17/32" | 0.5313" | 6 1/4" | 3.46" | Round | 17/32" | Split | Guhring | 2753A156 | 000000 | ||
Uncoated | |||||||||||
| 17/32" | 0.5313" | 6 5/8" | 4" | Round | 17/32" | Split | Chicago-Latrobe | 3069A82 | 00000 | ||
| 17/32" | 0.5313" | 8 1/2" | 4.63" | Morse Taper | Morse 2 | Split | Republic Drill | 3068A21 | 00000 | ||
Extended Length | |||||||||||
Uncoated | |||||||||||
| 17/32" | 0.5313" | 8" | 3.68" | Round | 17/32" | Split | Dormer Pramet | 3063A144 | 00000 | ||
Reduced-Shank Cobalt Steel Drill Bits
 | |
Jobbers' Length | Split |
Carbide-Tipped Drill Bits
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Short Length Round Shank |
 |
Extended Length Round Shank |
| |
Standard | Split |
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.
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.
Shank | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Short Length | |||||||||||
Uncoated | |||||||||||
| 17/32" | 0.5313" | 3 7/8" | 1.59" | Round | 17/32" | Standard | Izar | 28805A238 | 000000 | ||
| 17/32" | 0.5313" | 3 7/8" | 1.59" | Round | 17/32" | Split | Izar | 2750A36 | 00000 | ||
Extended Length | |||||||||||
Uncoated | |||||||||||
| 17/32" | 0.5313" | 8" | 3.95" | Round | 17/32" | Standard | ICS | 29465A39 | 00000 | ||
Reduced-Shank Carbide-Tipped Drill Bits
 |
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 | |||||||||||
| 17/32" | 0.5313" | 6" | 2.1" | Reduced Round | 1/2" | Standard | Rock River Tool | 8871A12 | 0000000 | ||
Carbide-Tipped Drill Bits for Hardened Steel
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Jobbers' Length Round Shank |
Straight flutes withstand the heavy pressure needed to penetrate hardened steel. These bits cut more aggressively and resist stress better than spiral-flute bits. A lower-priced alternative to solid carbide, they stay sharp when drilling abrasive material but won’t last as long.
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 | |||||||||||
| 17/32" | 0.5313" | 6" | 2.12" | Round | 17/32" | Notched | Izar | 2973A43 | 000000 | ||
High-Speed Steel Precise-Cut Drill Bits for Wood
 |
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 | ||||||||||
| 17/32" | 0.5313" | 6" | 3" | 1/2" | Brad | W. L. Fuller | 2926A78 | 000000 | ||
Drill Bit Guides
 |  |
For Drill Bit Size | For Drill Bit Size Decimal Equiv. | Lg. | Wd. | Ht. | Material | Each | ||
|---|---|---|---|---|---|---|---|---|
| 33/64", 17/32", 35/64", 9/16", 37/64", 19/32", 39/64", 5/8" | 0.5156", 0.5313", 0.5469", 0.5625", 0.5781", 0.5938", 0.6094", 0.6250" | 5 1/2" | 1 1/8" | 1 1/8" | Steel | 9550T112 | 000000 |
High-Speed Steel Drill Bits for Plastic
Jobbers' Length
 |
Shank | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Angle | Drill Bit Point Type | Mfr. | Each | |||
Uncoated | ||||||||||||
| 17/32" | 0.5313" | 6 5/8" | 2.12" | Round | 1/2" | 60° | Standard | ICS | 27465A71 | 000000 | ||
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 | ||||||||
| 18 | 1/2"-13 Thread × 1/2" Installed Lg. (6 Each) 1/2"-13 Thread × 3/4" Installed Lg. (6 Each) 1/2"-13 Thread × 1" Installed Lg. (6 Each) Drill Bit Installation Tool Prong Break-Off Tool Through-Hole Tap | Coarse | 17/32" | 0.531" | 91732A937 | 000000 | ||
| 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 | 000000 | ||
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 | |||||||||
| 17/32" | 0.5313" | 1" | 1" | 1/8" | Steel | 8865A238 | 000000 | ||
Drill Taps
 |
Straight Flute |
Drill holes and cut threads without switching tools. Made of high-speed steel, these taps are for use on most metal and plastic. The square shank is compatible with 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.
Uncoated High-Speed Steel—Uncoated taps are strong enough for most tapping jobs but have the shortest tool life.
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 | |||||||||||||
| 5/8"-11 | 1 3/4" | 5 1/16" | 17/32" | 0.5313" | 110° | Straight | 4 | UNC | H3 | 2748A11 | 0000000 | ||
Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods
 |
These rods, also known as drill blanks, have an undersized diameter for machining your own drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.
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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 | Lg. | Yield Strength, psi | Hardness | Mechanical Finish | Each | ||
|---|---|---|---|---|---|---|---|---|---|
| 0.5312" | -0.0002" to 0" | 17/32" | 6" | 261,000 | Rockwell C60 (Extra Hard) | Precision Ground | 3009A316 | 000000 |
Quick-Change Hex Shank Drill Taps for Drills and Screwdrivers
 |
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 | Hex Shank Size | Each | |||
Uncoated High-Speed Steel | ||||||||||||||
| 5/8"-11 | 1 3/4" | 6 1/16" | 17/32" | 0.5313" | 118° | Spiral | 4 | UNC | H3 | 1/4" | 3464A66 | 000000 | ||
Titanium Nitride (TiN)-Coated High-Speed Steel | ||||||||||||||
| 5/8"-11 | 1 3/4" | 6 1/16" | 17/32" | 0.5313" | 118° | Spiral | 4 | UNC | H3 | 1/4" | 3464A136 | 00000 | ||
Tight-Tolerance Water-Hardening W1 Tool Steel Rods
 |
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.
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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.5313" | -0.001" to 0.001" | 17/32" | Hot Rolled | Annealed | 50,000 | Precision Ground | Rockwell B95 (Medium) | Rockwell C65 | ASTM A686 | 8890K3 | 00000 | 000000 | 000000 |
