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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 |
 |
Maintenance Length Round Shank 3-Flat Shank |
 |
Extended Length Round Shank |
 |  |
Standard | Split |
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.
Maintenance Length—Shorter than jobbers' length, these bits are more rigid for less wobble when drilling hard material. Also known as mechanics’ bits.
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.
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 and titanium.
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.
Black/Gold Oxide—Like black oxide, this finish adds wear resistance and reduces friction for improved chip flow. Because it’s less prone to flaking off, it offers better rust protection when bits aren't in use.
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 | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 3.5" | Round | 29/64" | Split | Chicago-Latrobe | 1 | 2901A138 | 000000 | ||
| 29/64" | 0.4531" | 5 5/8" | 3.5" | Round | 29/64" | Split | Chicago-Latrobe | 6 | 2901A589 | 00000 | ||
| 29/64" | 0.4531" | 7 1/2" | 3.44" | Morse Taper | Morse 1 | Standard | Chicago-Latrobe | 1 | 2929A362 | 00000 | ||
Titanium Nitride (TiN) Coated | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 3.5" | Round | 29/64" | Split | Chicago-Latrobe | 1 | 29115A738 | 00000 | ||
| 29/64" | 0.4531" | 5 5/8" | 3.5" | Round | 29/64" | Split | Chicago-Latrobe | 6 | 29115A838 | 000000 | ||
Titanium Aluminum Nitride (TiAlN) Coated | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 3.5" | Round | 29/64" | Split | Chicago-Latrobe | 1 | 3202A72 | 00000 | ||
Uncoated | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 3.5" | Round | 29/64" | Standard | Viking Norseman Drill | 1 | 8870A42 | 00000 | ||
| 29/64" | 0.4531" | 5 5/8" | 3.5" | Round | 29/64" | Standard | Viking Norseman Drill | 6 | 8870A142 | 00000 | ||
Short Length | ||||||||||||
Black Oxide | ||||||||||||
| 29/64" | 0.4531" | 3 5/8" | 1.44" | Round | 29/64" | Split | Chicago-Latrobe | 1 | 2896A39 | 00000 | ||
Titanium Nitride (TiN) Coated | ||||||||||||
| 29/64" | 0.4531" | 3 5/8" | 1.44" | Round | 29/64" | Split | Viking Norseman Drill | 1 | 2908A58 | 00000 | ||
Uncoated | ||||||||||||
| 29/64" | 0.4531" | 3 5/8" | 1.44" | Round | 29/64" | Standard | Chicago-Latrobe | 1 | 8947A138 | 00000 | ||
Maintenance Length | ||||||||||||
Black/Gold Oxide | ||||||||||||
| 29/64" | 0.4531" | 4 5/8" | 2.87" | Round/3-Flat | 29/64" | Split | Viking Norseman Drill | 1 | 87755A48 | 00000 | ||
Extended Length | ||||||||||||
Black Oxide | ||||||||||||
| 29/64" | 0.4531" | 7 1/2" | 4.07" | Round | 29/64" | Standard | Chicago-Latrobe | 1 | 29315A154 | 00000 | ||
Uncoated | ||||||||||||
| 29/64" | 0.4531" | 12" | 8.09" | Round | 29/64" | Standard | Dormer Pramet | 1 | 2939A34 | 00000 | ||
Cobalt Steel Drill Bits
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Jobbers' Length Round Shank |
 |
Jobbers' Length Hex Shank |
 |
Short 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.
Short Length—The most rigid bits for drilling the straightest holes.
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 | |||||||||||
| 29/64" | 0.4531" | 5 5/8" | 4.19" | Round | 29/64" | Split | Dormer Pramet | 27995A538 | 000000 | ||
Titanium Aluminum Nitride (TiAlN) Coated | |||||||||||
| 29/64" | 0.4531" | 5 5/8" | 3.02" | Round | 29/64" | Split | Guhring | 2753A151 | 000000 | ||
Uncoated | |||||||||||
| 29/64" | 0.4531" | 5 5/8" | 2.95" | Hex | 29/64" | Split | Cle-Line | 4909N29 | 00000 | ||
| 29/64" | 0.4531" | 5 5/8" | 3.5" | Round | 29/64" | Split | Chicago-Latrobe | 3069A39 | 00000 | ||
Short Length | |||||||||||
Titanium Nitride (TiN) Coated | |||||||||||
| 29/64" | 0.4531" | 3 9/16" | 1.44" | Round | 29/64" | Split | Chicago-Latrobe | 2416A38 | 00000 | ||
Uncoated | |||||||||||
| 29/64" | 0.4531" | 3 5/8" | 1.44" | Round | 29/64" | Split | Chicago-Latrobe | 28765A38 | 00000 | ||
Carbide Drill Bits
 |  |
Jobbers' Length Round Shank | Short Length Round Shank |
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 | |||||||||||
| 29/64" | 0.4531" | 4 3/4" | 2.4" | Round | 29/64" | Four Facet | Ultra Tool | 27515A62 | 0000000 | ||
Titanium Aluminum Nitride (TiAlN) Coated | |||||||||||
| 29/64" | 0.4531" | 4 3/4" | 2.4" | Round | 29/64" | Four Facet | Ultra Tool | 8879A92 | 000000 | ||
Uncoated | |||||||||||
| 29/64" | 0.4531" | 4 3/4" | 2.4" | Round | 29/64" | Four Facet | Ultra Tool | 2956A38 | 000000 | ||
Short Length | |||||||||||
Uncoated | |||||||||||
| 29/64" | 0.4531" | 3" | 1" | Round | 29/64" | Four Facet | Ultra Tool | 2956A74 | 000000 | ||
Drill Bit Size Gauges
 |
For Inch |
Measure drill bit sizes with these gauges.
For System of Measurement | For Use With | For Drill Bit Size | Wd. | Ht. | Thk. | Material | Color | Mounting Hole Dia. | Each | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | Drills | 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2" | 2 1/2" | 6 1/2" | 5/64" | Steel | Silver | 1/8" | 8986A67 | 000000 |
Reduced-Shank High-Speed Steel Drill Bits
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Jobbers' 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.
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.
Carbide-Tipped Drill Bits
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Jobbers' 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.
Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
Short-Flute High-Speed Steel Drill Bits
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Extended Length Round Shank |
|
Split |
The rigidity of short-length bits without sacrificing reach. The shallow drilling depth makes these less likely to wobble than other bits of the same length, so they stay centered and drill straighter. High-speed steel is good for general purpose drilling in most metals.
Extended Length—Drill through panels and thick workpieces with our longest bits.
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.
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 | ||||||||||
| 29/64" | 0.4531" | 5 5/8" | 4.19" | 7/16" | Brad | W. L. Fuller | 2926A124 | 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 | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 4.19" | Round | 29/64" | 60° | Standard | Onsrud | 27465A66 | 000000 | ||
Drill Bit Guides
 |  |
For Drill Bit Size | For Drill Bit Size Decimal Equiv. | Lg. | Wd. | Ht. | Material | Each | ||
|---|---|---|---|---|---|---|---|---|
| 3/8", 25/64", 13/32", 7/16", 29/64", 15/32", 31/64", 1/2", 27/64" | 0.375", 0.3906", 0.4063", 0.4219", 0.4375", 0.4531", 0.4688", 0.4844", 0.5" | 5 1/4" | 1" | 7/8" | Steel | 9550T16 | 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 | 7/16"-14 Thread × 0.438" Installed Lg. (6 Each) 7/16"-14 Thread × 0.656" Installed Lg. (6 Each) 7/16"-14 Thread × 7/8" Installed Lg. (6 Each) Drill Bit Installation Tool Prong Break-Off Tool Through-Hole Tap | Coarse | 29/64" | 0.453" | 91732A933 | 000000 | ||
| 18 | 7/16"-20 Thread × 0.438" Installed Lg. (6 Each) 7/16"-20 Thread × 0.656" Installed Lg. (6 Each) 7/16"-20 Thread × 7/8" Installed Lg. (6 Each) Drill Bit Installation Tool Prong Break-Off Tool Through-Hole Tap | Fine | 29/64" | 0.453" | 91732A935 | 00000 | ||
| 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 | ||
| 60 | 10-32 Thread × 0.285" Installed Lg. (12 Each) 1/4"-28 Thread × 3/8" Installed Lg. (12 Each) 5/16"-24 Thread × 0.469" Installed Lg. (12 Each) 3/8"-24 Thread × 0.562" Installed Lg. (12 Each) 7/16"-20 Thread × 0.656" Installed Lg. (6 Each) 1/2"-20 Thread × 3/4" Installed Lg. (6 Each) Drill Bits Installation Tools Through-Hole Taps | Fine | 13/64" 17/64" 21/64" 25/64" 29/64" 33/64" | 0.203" 0.266" 0.328" 0.391" 0.453" 0.516" | 90285A124 | 000000 | ||
Chip-Clearing High-Speed Steel Drill Bits
 |
Jobbers' Length High Helix Flute Round Shank |
 |
Jobbers' Length Parabolic Flute Round Shank |
| |
Standard | Split |
With flutes that lift chips out of the hole, you don't have to stop drilling to clear these bits manually. They improve coolant flow to dissipate heat and prevent clogs that can damage the bit and ruin the hole. High-speed steel is good for general purpose drilling in most metals.
High Helix Flute—Less aggressive than parabolic flutes for cleaner cuts in soft metals.
Parabolic Flute—A U-shaped groove on the flutes cuts faster and clears chips more quickly than high-helix bits, so these are better for drilling deeper holes.
Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
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. | Flute Type | Type | Size | Drill Bit Point Type | Mfr. | Each | |||
Jobbers' Length | ||||||||||||
Black Oxide | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 2.78" | High Helix | Round | 29/64" | Split | Dormer Pramet | 31115A68 | 000000 | ||
| 29/64" | 0.4531" | 5 5/8" | 3.28" | Parabolic | Round | 29/64" | Split | Chicago-Latrobe | 29925A38 | 00000 | ||
Titanium Nitride (TiN) Coated | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 3.28" | Parabolic | Round | 29/64" | Split | Chicago-Latrobe | 29925A78 | 00000 | ||
Uncoated | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 3.28" | Parabolic | Round | 29/64" | Split | Dormer Pramet | 2754A68 | 00000 | ||
| 29/64" | 0.4531" | 5 5/8" | 3.5" | High Helix | Round | 29/64" | Standard | Chicago-Latrobe | 2912A138 | 00000 | ||
High-Speed Steel Drill Bits for Wire Installation
Carbide Drill Bits for Carbon Fiber, Fiberglass, and Graphite
 |
Jobbers' Length |
Cut clean holes in abrasive material without fraying or delaminating the surface. Made of carbide, these bits resist wear to retain a sharp edge, even after after hundreds of cuts.
Shank | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drill Bit Size | Decimal Size Equiv. | Overall Lg. | Max. Drilling Dp. | Type | Size | Point Angle | Drill Bit Point Type | Bit Style | Mfr. | Each | |||
Jobbers' Length | |||||||||||||
Uncoated | |||||||||||||
| 29/64" | 0.4531" | 4 3/4" | 2.4" | Round | 29/64" | 140° | Brad | Fluted | Ultra Tool | 2828A27 | 0000000 | ||
Short-Flute Cobalt Steel Drill Bits
 |
Jobbers' Length Round Shank |
|
Split |
These bits combine the toughness and wear resistance of cobalt with short flutes for rigidity. The shallow drilling depth makes them less likely to wobble than other bits of the same length, so they stay centered and drill straighter. Cobalt lasts at least twice as long as high-speed steel. It can also run up to 25% faster at higher temperatures without damaging the bit on hard materials such as nickel.
Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
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 | 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 | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 1.45" | Round | 29/64" | Split | Cleveland | 3146A139 | 000000 | 000000 | ||
Chip-Clearing High-Speed Steel Drill Bits for Aluminum, Brass, and Bronze
 | |
Jobbers' Length Low Helix Flute Round Shank | Standard |
Designed for soft metals that can gum up other drill bits, wide flutes lift chips out of the hole. This prevents clogs that can weaken and damage the bit and ruin the hole. Also known as slow spiral bits, these are made of versatile high-speed steel.
Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
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 | 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 | |||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 3.28" | Low Helix | Round | 29/64" | Standard | Chicago-Latrobe | 2928A238 | 000000 | 000000 | ||
M2 High-Speed Tool Steel Rod Sets
 |
Supplied in a metal index case with fold-out panels, these rods, also known as drill blanks, have an undersized diameter for machining your own jobbers'-length drill bits. They are 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.
Includes | No. of Pieces | Dia. Tolerance | Mechanical Finish | Each | ||
|---|---|---|---|---|---|---|
| Sizes 1/16"-1/2" (×1/64ths increments) and a metal index case | 29 | -0.0002" to 0" | Precision Ground | 2952A5 | 0000000 |
Quick-Change Hex Shank Drill Taps for Drills and Screwdrivers
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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 | ||||||||||||||
| 1/2"-20 | 1 3/8" | 5 1/16" | 29/64" | 0.4531" | 118° | Spiral | 2 | UNF | H3 | 1/4" | 3464A64 | 000000 | ||
Titanium Nitride (TiN)-Coated High-Speed Steel | ||||||||||||||
| 1/2"-20 | 1 3/8" | 4 1/16" | 29/64" | 0.4531" | 118° | Spiral | 2 | UNF | H3 | 1/4" | 3464A125 | 00000 | ||
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 | |||||||||
| 29/64" | 0.4531" | 7/8" | 7/8" | 1/8" | Steel | 8865A231 | 00000 | ||
Thread-Locking Threaded Inserts with Installation Tools
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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.
Thin Wall—Use these inserts near the edge of workpieces or wherever you only have space for a small hole. They're also lighter than standard and extra-thick wall inserts for applications with strict weight limits.
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 | |||
|---|---|---|---|---|---|---|---|---|---|---|
Thin Wall | ||||||||||
Black Phosphate-Coated Steel | ||||||||||
| 3/8"-16 | 1/2"-13 | 0.500" | 29/64" | 0.453" | Slotted | 10 | 96015A113 | 000000 | ||
Helical Threaded Inserts with Installation Tools
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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 | |||||||||
| 7/16"-14 | 0.438" | 29/64" | 0.453" | 10 | Drill Bit Installation Tool Through-Hole Tap | 98356A141 | 000000 | ||
| 7/16"-14 | 0.656" | 29/64" | 0.453" | 10 | Drill Bit Installation Tool Through-Hole Tap | 91732A934 | 00000 | ||
| 7/16"-14 | 0.875" | 29/64" | 0.453" | 5 | Drill Bit Installation Tool Through-Hole Tap | 98356A142 | 00000 | ||
| 7/16"-20 | 0.438" | 29/64" | 0.453" | 10 | Drill Bit Installation Tool Through-Hole Tap | 98356A143 | 00000 | ||
| 7/16"-20 | 0.656" | 29/64" | 0.453" | 10 | Drill Bit Installation Tool Through-Hole Tap | 91732A936 | 00000 | ||
Drill Taps
 |
Spiral 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 | |||||||||||||
| 1/2"-20 | 1 3/8" | 4 1/16" | 29/64" | 0.4531" | 110° | Spiral | 2 | UNF | H3 | 2748A58 | 000000 | ||
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 | ||||||||||||
| 29/64" | 0.4531" | 5 5/8" | 3.28" | Round | 29/64" | Split | ICS | 2876A411 | 000000 | 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.
Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods
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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.
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 | Hardness | Mechanical Finish | Each | ||
|---|---|---|---|---|---|---|---|---|---|
| 0.4531" | -0.0002" to 0" | 29/64" | 5 5/8" | Not Rated | Rockwell C60 (Extra Hard) | Precision Ground | 3009A142 | 000000 |
