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    66 Products
    About Drill Bits
    industrial info icon

    Compare material, finish, length class, and decimal size equivalents.

    High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Jobbers' Length, Round Shank.
    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Short Length, Round Shank.

    Jobbers' Length

    Round Shank

    Short Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Maintenance Length, Round Shank, 3-Flat Shank.
    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Extended Length, Round Shank.

    Maintenance Length

    Round Shank

    3-Flat Shank

    Extended Length

    Round Shank

    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Standard

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    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.
    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.
    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.
    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
    15/64"
    		0.2344"
    		3 7/8"2.27"Round
    		15/64"Split
    		Chicago-Latrobe12901A12300000
    15/64"
    		0.2344"
    		3 7/8"2.27"Round
    		15/64"Split
    		Chicago-Latrobe122901A51500000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    15/64"
    		0.2344"
    		3 7/8"2.27"Round
    		15/64"Split
    		Chicago-Latrobe13202A560000
     
    Titanium Nitride (TiN) Coated
    15/64"
    		0.2344"
    		3 7/8"2.27"Round
    		15/64"Split
    		Chicago-Latrobe129115A7230000
    15/64"
    		0.2344"
    		3 7/8"2.27"Round
    		15/64"Split
    		Chicago-Latrobe1229115A82300000
     
    Uncoated
    15/64"
    		0.2344"
    		3 7/8"2.27"Round
    		15/64"Standard
    		Viking Norseman Drill18870A260000
    15/64"
    		0.2344"
    		3 7/8"2.27"Round
    		15/64"Standard
    		Viking Norseman Drill128870A12600000
     
    Short Length
     
    Black Oxide
    15/64"
    		0.2344"
    		2 1/2"0.96"Round
    		15/64"Split
    		Chicago-Latrobe12896A240000
     
    Titanium Nitride (TiN) Coated
    15/64"
    		0.2344"
    		2 1/2"0.96"Round
    		15/64"Split
    		Viking Norseman Drill12908A430000
     
    Uncoated
    15/64"
    		0.2344"
    		2 1/2"0.96"Round
    		15/64"Standard
    		Chicago-Latrobe18947A1230000
     
    Maintenance Length
     
    Black/Gold Oxide
    15/64"
    		0.2344"
    		3 3/8"1.93"Round/3-Flat
    		15/64"Split
    		Viking Norseman Drill187755A330000
    15/64"
    		0.2344"
    		3 3/8"1.93"Round/3-Flat
    		15/64"Split
    		Viking Norseman Drill1287755A1300000
     
    Extended Length
     
    Black Oxide
    15/64"
    		0.2344"
    		6 1/8"3.39"Round
    		15/64"Standard
    		Chicago-Latrobe129315A13200000
    15/64"
    		0.2344"
    		8"5.14"Round
    		15/64"Standard
    		Chicago-Latrobe129515A4400000
     
    Titanium Nitride (TiN) Coated
    15/64"
    		0.2344"
    		6 1/8"3.75"Round
    		15/64"Standard
    		Dormer Pramet128965A73800000
     
    Uncoated
    15/64"
    		0.2344"
    		6 1/8"3.75"Round
    		15/64"Standard
    		Dormer Pramet12939A720000
    15/64"
    		0.2344"
    		12"8.53"Round
    		15/64"Standard
    		Dormer Pramet12939A1800000
     

    Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Jobbers' Length, Hex Shank.

    Jobbers' Length

    Hex Shank

    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Short Length, Round Shank.

    Short Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Extended Length, Round Shank.

    Extended Length

    Round Shank

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    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.
    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
    15/64"
    		0.2344"
    		3 7/8"2.63"Round
    		15/64"Split
    		Dormer Pramet27995A523000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    15/64"
    		0.2344"
    		3 7/8"2.63"Round
    		15/64"Split
    		Dormer Pramet27995A81500000
     
    Uncoated
    15/64"
    		0.2344"
    		3 7/8"1.73"Hex
    		11/32"Split
    		Cle-Line4909N140000
    15/64"
    		0.2344"
    		3 7/8"2.16"Round
    		15/64"Split
    		Chicago-Latrobe3069A240000
     
    Short Length
     
    Titanium Nitride (TiN) Coated
    15/64"
    		0.2344"
    		2 7/16"0.96"Round
    		15/64"Split
    		Chicago-Latrobe2416A2300000
     
    Uncoated
    15/64"
    		0.2344"
    		2 1/2"0.96"Round
    		15/64"Split
    		Chicago-Latrobe28765A230000
     
    Extended Length
     
    Uncoated
    15/64"
    		0.2344"
    		6 1/8"3.28"Round
    		15/64"Split
    		Dormer Pramet3063A12300000
     

    Carbide Drill Bits

    Image of Product. Front orientation. Drill Bits. Carbide Drill Bits, Jobbers' Length, Round Shank.
    Image of Product. Front orientation. Drill Bits. Carbide Drill Bits, Short Length, Round Shank.

    Jobbers' Length

    Round Shank

    Short Length

    Round Shank

    The hardest and most wear-resistant drill bits you can buy. Carbide bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    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 bits, especially on materials like hardened steel, iron, and stainless steel.
    Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.
    Uncoated—Excellent for a range of materials but won't last as long as coated 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
    15/64"
    		0.2344"
    		3 1/4"1.6"Round
    		15/64"Four Facet
    		Ultra Tool27515A46000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    15/64"
    		0.2344"
    		3 1/4"1.6"Round
    		15/64"Four Facet
    		Ultra Tool8879A6600000
     
    Uncoated
    15/64"
    		0.2344"
    		3 1/4"1.6"Round
    		15/64"Four Facet
    		Ultra Tool2956A2300000
     
    Short Length
     
    Uncoated
    15/64"
    		0.2344"
    		2 1/2"0.8"Round
    		15/64"Four Facet
    		Ultra Tool2956A6600000
     

    Drill Bit Size Gauges

    Image of Product. Front orientation. Drill Bit Size Gauges. For Inch.

    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
    InchDrills1/16", 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
    		Silver1/8"8986A67000000

    Carbide-Tipped Drill Bits

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits, Extended Length, Round Shank.

    Extended Length

    Round Shank

    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    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.
    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
    Jobbers' Length
     
    Uncoated
    15/64"
    		0.2344"
    		3 7/8"2.1"Round
    		15/64"Standard
    		ICS2940A21000000
    15/64"
    		0.2344"
    		3 7/8"2.1"Round
    		15/64"Split
    		ICS31575A1600000
     
    Extended Length
     
    Uncoated
    15/64"
    		0.2344"
    		6 1/8"3.16"Round
    		15/64"Standard
    		ICS29465A1800000
     

    Drill Bit Guides

    Image of ProductInUse. Front orientation. Contains Annotated, MultipleImages. Drill Bit Guides. Drill Bit Guides.
    Image of Product. Front orientation. Drill Bit Guides. Drill Bit Guides.
    Place these guides on your workpiece to drill precise holes without building a fixture. They'll even work on corners and round surfaces. Lines marked on the side allow you to align your holes accurately. Made of hardened steel, they’re tough enough to withstand frequent use.
    For Drill Bit Size
    For Drill Bit Size Decimal Equiv.
    Lg.
    Wd.
    Ht.
    Material
    Each
    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"0.125", 0.1406", 0.1563", 0.1719", 0.1875", 0.2031", 0.2188", 0.2344", 0.25", 0.2656", 0.2813", 0.2969", 0.3125", 0.3281", 0.3438", 0.3594", 0.375"5 1/2"3/4"7/8"Steel
    		9550T14000000

    Chip-Clearing High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Chip-Clearing High-Speed Steel Drill Bits, Jobbers' Length, High Helix Flute, Round Shank.
    Image of Product. Front orientation. Drill Bits. Chip-Clearing High-Speed Steel Drill Bits, Jobbers' Length, Parabolic Flute, Round Shank.

    Jobbers' Length

    High Helix Flute

    Round Shank

    Jobbers' Length

    Parabolic Flute

    Round Shank

    Image of Product. Front orientation. Drill Bits. Chip-Clearing High-Speed Steel Drill Bits, Extended Length, Parabolic Flute, Round Shank.

    Extended Length

    Parabolic Flute

    Round Shank

    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Standard

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    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.
    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.
    Flute
    Type
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Jobbers' Length
     
    Black Oxide
    15/64"
    		0.2344"
    		3 5/8"1.78"High HelixRound
    		15/64"Split
    		Dormer Pramet31115A5300000
    15/64"
    		0.2344"
    		3 7/8"2.15"ParabolicRound
    		15/64"Split
    		Chicago-Latrobe29925A230000
     
    Titanium Nitride (TiN) Coated
    15/64"
    		0.2344"
    		3 7/8"2.15"ParabolicRound
    		15/64"Split
    		Chicago-Latrobe29925A6300000
     
    Uncoated
    15/64"
    		0.2344"
    		3 7/8"2.15"ParabolicRound
    		15/64"Split
    		Dormer Pramet2754A530000
    15/64"
    		0.2344"
    		3 7/8"2.27"High HelixRound
    		15/64"Standard
    		Chicago-Latrobe2912A1230000
     
    Extended Length
     
    Uncoated
    15/64"
    		0.2344"
    		8"5.53"ParabolicRound
    		15/64"Split
    		Dormer Pramet29745A3800000
     

    Short-Flute High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Short-Flute High-Speed Steel Drill Bits, Extended Length, Round Shank.

    Extended Length

    Round Shank

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    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.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Extended Length
     
    Black Oxide
    15/64"
    		0.2344"
    		6"2.3"Round
    		15/64"Split
    		Chicago-Latrobe2986A2400000
    15/64"
    		0.2344"
    		12"2.3"Round
    		15/64"Split
    		Chicago-Latrobe2986A5800000
     

    Quick-Change Hex High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Quick-Change Hex High-Speed Steel Drill Bits, Jobbers' Length.

    Jobbers' Length

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Split

    Save time when you need to change bits frequently. The grooved shank snaps directly into power screwdrivers, impact drivers, and other tools that accept a 1/4" hex shank. High-speed steel bits are good for general purpose drilling in most metals.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    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
     
    Titanium Nitride (TiN) Coated
    15/64"
    		0.2344"
    		3 1/8"1.44"Quick-Change Hex
    		1/4"Split
    		DeWalt29305A65000000
     

    Short-Flute Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Short-Flute Cobalt Steel Drill Bits, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. Short-Flute Cobalt Steel Drill Bits, Extended Length, Round Shank.

    Extended Length

    Round Shank

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    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.
    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.
    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
     
    Black Oxide
    15/64"
    		0.2344"
    		3 7/8"0.96"Round
    		15/64"Split
    		Cleveland3146A12400000
     
    Extended Length
     
    Uncoated
    15/64"
    		0.2344"
    		6"2.15"Round
    		15/64"Split
    		Dormer Pramet8934A2300000
    15/64"
    		0.2344"
    		12"2.15"Round
    		15/64"Split
    		Dormer Pramet8934A4300000
     

    High-Speed Steel Drill Bits for Plastic

    The precision-ground, 60° point penetrates gradually to prevent cracking and chipping. It also reduces heat that can deform the material. Use these bits for drilling into acrylic, laminate, and other plastics. They're made of wear-resistant high-speed steel.
    Jobbers' LengthAbout Jobbers' Length
    Image of Product. Front orientation. Drill Bits. 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
    15/64"
    		0.2344"
    		3 7/8"2.63"Round
    		15/64"60°Standard
    		Onsrud27465A55000000
     

    Left-Hand High-Speed Steel Drill Bits

    Image of Product. Side1 orientation. Drill Bits. Left-Hand High-Speed Steel Drill Bits, Jobbers' Length, Round Shank.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Jobbers' Length

    Round Shank

    Split

    With flutes that spiral in the opposite direction of other bits, these are primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute bits. High-speed steel is the versatile choice for drilling most metals.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    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.
    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
     
    Gold Oxide
    15/64"
    		0.2344"
    		3 7/8"2.5"Round
    		15/64"Split
    		ICS88055A65000000
     
    Uncoated
    15/64"
    		0.2344"
    		3 7/8"2.15"Round
    		15/64"Split
    		ICS2876A2510000
     

    Carbide Drill Bits for Carbon Fiber, Fiberglass, and Graphite

    Image of Product. Front orientation. Drill Bits. Carbide Drill Bits for Carbon Fiber, Fiberglass, and Graphite, Jobbers' Length.

    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
    15/64"
    		0.2344"
    		3 1/4"1.6"Round
    		15/64"140°Brad
    		FlutedUltra Tool2828A16000000
     

    Carbide Drill Bits for Hardened Steel

    Image of Product. Front orientation. Drill Bits. Carbide Drill Bits for Hardened Steel, Short Length, Round Shank.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Short Length

    Round Shank

    Split

    The hardest and most wear-resistant bits with the longest life. Straight flutes withstand the heavy pressure needed to penetrate hardened steel. These bits cut more aggressively and resist stress better than spiral-flute bits. Carbide stays sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. It can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling 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 bits, especially on materials like hardened steel, iron, and stainless steel.
    Uncoated—Excellent for a range of materials but won't last as long as coated bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit Point
    Type
    Mfr.
    Each
    Short Length
     
    Titanium Nitride (TiN) Coated
    15/64"
    		0.2344"
    		2 1/2"0.8"Round
    		15/64"Split
    		Ultra Tool8882A23000000
     
    Uncoated
    15/64"
    		0.2344"
    		2 1/2"0.8"Round
    		15/64"Four Facet
    		Ultra Tool8944A2300000
     

    Carbide-Tipped Drill Bits for Hardened Steel

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits for Hardened Steel, Jobbers' Length, Round Shank.

    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
    15/64"
    		0.2344"
    		4"0.93"Round
    		15/64"Notched
    		Izar2973A23000000
     

    Hole-Starting Carbide Drill Bits

    Image of Product. Front orientation. Drill Bits. Hole-Starting Carbide Drill Bits, Short Length, Round Shank.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Short Length

    Round Shank

    Split

    Harder and more wear resistant than cobalt steel, these carbide bits create an accurate starting place in your workpiece. Cut an indent, then continue drilling with a longer bit. The indent prevents slipping so the final hole is centered and precise. Carbide stays sharp at high temperatures and faster speeds. It can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling 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 bits, especially on materials like hardened steel, iron, and stainless steel.
    Shank
    140° Point Angle
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Short Length
     
    Titanium Nitride (TiN) Coated
    15/64"
    		0.2344"
    		2 1/2"0.7"Round
    		15/64"Split
    		GWS88915A28000000
     

    Chip-Clearing Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Chip-Clearing Cobalt Steel Drill Bits, Jobbers' Length, Parabolic Flute, Round Shank.

    Jobbers' Length

    Parabolic Flute

    Round Shank

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Split

    Avoid clogs and dissipate heat with cobalt bits that last at least twice as long as high-speed steel. The flutes clear chips to improve coolant flow and prevent damage to the bit and the hole. They also speed up drilling since you don't have to stop to clear the bit manually.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    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.
    Flute
    Type
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Jobbers' Length
     
    Titanium Nitride (TiN) Coated
    15/64"
    		0.2344"
    		3 5/8"2.2"ParabolicRound
    		15/64"Split
    		Viking Norseman Drill3183A53000000
     
    Uncoated
    15/64"
    		0.2344"
    		3 5/8"2.15"ParabolicRound
    		15/64"Split
    		Viking Norseman Drill29925A92300000
     

    Smooth-Finish Carbide Drill Bits

    Image of Product. Front orientation. Drill Bits. Smooth-Finish Carbide Drill Bits, Jobbers' Length, Round Shank.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Jobbers' Length

    Round Shank

    Split

    With more cutting edges than other drill bits, these cut continuously and consistently for a smoother finish. They also stay centered to produce holes that are straighter and more accurate. However, since there’s less space between the cutting edges, they don’t clear chips as quickly. Made of carbide, these are the hardest and most wear-resistant drill bits you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Uncoated—Excellent for a range of materials but won't last as long as coated bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Jobbers' Length
     
    Uncoated
    15/64"
    		0.2344"
    		3 1/4"1.6"Round
    		15/64"Split
    		Ultra Tool3171A43000000
     

    Chip-Clearing Cobalt Steel Drill Bits for Nickel and Stainless Steel

    Image of Product. Front orientation. Drill Bits. Chip-Clearing Cobalt Steel Drill Bits for Nickel and Stainless Steel, Jobbers' Length, Parabolic Flute, Round Shank.

    Jobbers' Length

    Parabolic Flute

    Round Shank

    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Split

    Excellent for challenging metals such as stainless steel and nickel alloys, these bits cut aggressively and evacuate chips quickly. The grooved flutes prevent clogs and improve coolant flow to dissipate heat that can damage the bit or your material. Bits are made of tough and wear-resistant cobalt steel.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    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.
    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 Aluminum Nitride (TiAlN) Coated
    15/64"
    		0.2344"
    		3 5/8"2.24"ParabolicRound
    		15/64"Split
    		Guhring3020A21000000
     

    Chip-Clearing High-Speed Steel Drill Bits for Aluminum, Brass, and Bronze

    Image of Product. Front orientation. Drill Bits. Chip-Clearing High-Speed Steel Drill Bits for Aluminum, Brass, and Bronze, Jobbers' Length, Low Helix Flute, Round Shank.

    Jobbers' Length

    Low Helix Flute

    Round Shank

    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    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.
    1-11
    12-Up
    Jobbers' Length
     
    Uncoated
    15/64"
    		0.2344"
    		3 7/8"2.15"Low HelixRound
    		15/64"Standard
    		Chicago-Latrobe2928A2230000000000
     

    Depth-Limiting Drill Stops

    Image of ProductInUse. Front orientation. Drill Stops.
    Ensure identical hole depths every time. Position the collar on your bit and tighten the set screw.
    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
    15/64"0.2344"1/2"1/2"3/32"Steel
    		8865A17600000
     

    Extensions for Round-Shank Drill Bits

    Image of Product. Front orientation. Contains Annotated. Drill Bit Extensions. Extensions for Round-Shank Drill Bits, Two-Piece Extensions.

    Two-Piece Extensions

    Attach to the shank of a drill bit to extend its reach.
    Two-Piece Extensions—To attach two-piece extensions, insert a drill bit into the collet, then thread the collet onto the extension and tighten with a wrench.
    For Drill Bit
    Size
    Size Decimal
    Equiv.
    Shank
    Size
    Shank
    Size
    Overall
    Lg.
    OD
    Material
    Each
    For Inch Drill Bits
     
    Two-Piece Extensions
    15/64"0.2344"15/64"1/4"4 1/2"7/16"Steel
    		3016A829000000
    15/64"0.2344"15/64"1/4"9 1/2"7/16"Steel
    		3016A85600000
     

    M2 High-Speed Tool Steel Rod Sets

    Image of Product. Front orientation. Steel. 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 case29-0.0002" to 0"Precision Ground2952A50000000

    Helical Threaded Inserts with Installation Tools

    Image of Product. Drill Bit, Installation Tool and Through-Hole Tap. Front orientation. Threaded Inserts. Helical Threaded Inserts with Installation Tools, Pronged, Drill Bit, Through-Hole Tap, Installation Tool.

    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
    12-24
    		0.324"15/64"
    		0.234"10Drill Bit
    Installation Tool
    Through-Hole Tap    		91732A918000000
     

    Tight-Tolerance Water-Hardening W1 Tool Steel Rods

    Image of Product. Front orientation. Steel. 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.
    Material Certificate Icon
    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
    3 ft.
    Long
    6 ft.
    Long
    0.2343"-0.001" to 0.001"15/64"
    		Hot RolledAnnealed50,000Precision GroundRockwell B95 (Medium)Rockwell C65ASTM A6868890K20700000000000

    Helical Threaded Insert Assortments with Installation Tools

    Image of Product. Front orientation. Threaded Inserts. 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
    3612-24 Thread × 0.216" Installed Lg. (12 Each)
    12-24 Thread × 0.328" Installed Lg. (12 Each)
    12-24 Thread × 0.432" Installed Lg. (12 Each)
    Drill Bit
    Installation Tool
    Prong Break-Off Tool
    Through-Hole Tap    		Coarse
    		15/64"
    		0.234"91732A917000000
     

    Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods

    Image of Product. Front orientation. Steel. 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.
    Material Certificate Icon
    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
    0.2344"-0.0002" to 0"15/64"
    		3 7/8"Not RatedRockwell C60 (Extra Hard)Precision Ground3009A12600000
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