McMaster-Carr logo
    Filter by
    System of Measurement
    Drill Bit Size
    Industrial Info Compare
    Attribute Image
    Shank Type
    Flute Direction
    Shank Size
    Attribute Image
    Sold As
    Decimal Size Equivalent
    Industrial Info Compare
    Bit Style
    Screw Size
    Number of Flutes
    DFARS Specialty Metals
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    60 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.

    Jobbers' Length

    Round Shank

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

    Short Length

    Round Shank

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

    Maintenance Length

    Round Shank

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

    Split

    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.
    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
    Each
    Package
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Pkg.
    Qty.
    Pkg.
    Jobbers' Length
     
    Black Oxide
    7/64"
    		0.1094"
    		2 5/8"1.33"Round7/64"SplitChicago-Latrobe2901A11400000122901A507000000
     
    Titanium Nitride (TiN) Coated
    7/64"
    		0.1094"
    		2 5/8"1.33"Round7/64"SplitChicago-Latrobe29115A71400001229115A81400000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    7/64"
    		0.1094"
    		2 5/8"1.33"Round7/64"SplitChicago-Latrobe3202A470000123202A2900000
     
    Uncoated
    7/64"
    		0.1094"
    		2 5/8"1.33"Round7/64"StandardViking Norseman Drill8870A170000128870A11700000
     
    Short Length
     
    Black Oxide
    7/64"
    		0.1094"
    		1 7/8"0.64"Round7/64"SplitChicago-Latrobe2896A150000122896A15500000
     
    Titanium Nitride (TiN) Coated
    7/64"
    		0.1094"
    		1 7/8"0.64"Round7/64"SplitViking Norseman Drill2908A34000062908A1300000
     
    Uncoated
    7/64"
    		0.1094"
    		1 7/8"0.64"Round7/64"StandardChicago-Latrobe8947A1140000————0
     
    Maintenance Length
     
    Black/Gold Oxide
    7/64"
    		0.1094"
    		2 3/8"1.31"Round7/64"SplitCle-Line87755A8440000————0
     
    Extended Length
     
    Black Oxide
    7/64"
    		0.1094"
    		4 5/8"2.33"Round7/64"StandardChicago-Latrobe29315A1190000————0
    7/64"
    		0.1094"
    		8"5.33"Round7/64"StandardChicago-Latrobe29515A4100000————0
     
    Titanium Nitride (TiN) Coated
    7/64"
    		0.1094"
    		4 5/8"2.5"Round7/64"StandardDormer Pramet28965A8150000————0
     
    Uncoated
    7/64"
    		0.1094"
    		4 5/8"2.5"Round7/64"StandardDormer Pramet2939A640000————0
     

    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, 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
    Each
    Package
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Pkg.
    Qty.
    Pkg.
    Jobbers' Length
     
    Titanium Nitride (TiN) Coated
    7/64"
    		0.1094"
    		2 5/8"1.5"Round7/64"SplitDormer Pramet27995A514000001227995A226000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    7/64"
    		0.1094"
    		2 3/8"1.14"Round7/64"SplitGuhring2753A12600000————0
     
    Uncoated
    7/64"
    		0.1094"
    		2 5/8"1.28"Round7/64"SplitChicago-Latrobe3069A150000————0
     
    Short Length
     
    Titanium Nitride (TiN) Coated
    7/64"
    		0.1094"
    		1 13/16"0.64"Round7/64"SplitChicago-Latrobe2416A140000————0
     
    Uncoated
    7/64"
    		0.1094"
    		1 7/8"0.64"Round7/64"SplitChicago-Latrobe28765A1400001228765A13500000
     
    Extended Length
     
    Uncoated
    7/64"
    		0.1094"
    		4 5/8"2.28"Round7/64"SplitDormer Pramet3063A11400000————0
     

    Left-Hand Cobalt Steel Drill Bits

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

    Maintenance Length

    Round Shank

    Split

    The flutes spiral in the opposite direction of other bits and stay sharp longer than high-speed steel. They’re 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.
    Maintenance Length—Shorter than jobbers' length, these bits are more rigid for less wobble when drilling hard material. Also known as mechanics’ 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, titanium, and fiberglass.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    Shank
    Each
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    1-11
    12-Up
    Maintenance Length
     
    Titanium Nitride (TiN) Coated
    7/64"
    		0.1094"
    		2 1/4"0.84"Round7/64"SplitCle-Line3474A290000000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    7/64"
    		0.1094"
    		2 1/4"0.84"Round7/64"SplitCle-Line3474A3900000000
     
    Uncoated
    7/64"
    		0.1094"
    		2 1/4"0.84"Round7/64"SplitCle-Line3474A1200000000
     

    Carbide Drill Bits

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

    Jobbers' 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.
    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
    7/64"
    		0.1094"
    		2 1/4"1"Round7/64"Four FacetUltra Tool27515A37000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    7/64"
    		0.1094"
    		2 1/4"1"Round7/64"Four FacetUltra Tool8879A1500000
     
    Uncoated
    7/64"
    		0.1094"
    		2 1/4"1"Round7/64"Four FacetUltra Tool2956A1400000
     

    Carbide-Tipped Drill Bits for Glass and Ceramic

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits for Glass and Ceramic, Spear Bit.

    Spear Bit

    The spear-shaped point grinds away glass and ceramic at a slow speed, reducing the chance of chipping and cracking. These bits are carbide-tipped steel, which is extremely hard and wear resistant to maintain a sharp edge cut after cut. Drilling requires a coolant, such as water.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Spear Bit
     
    Carbide Tipped/Uncoated
    1/8"
    		0.125"
    		2 1/4"1"Round7/64"StandardTru-Cut2954A100000
     

    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
    7/64"
    		0.1094"
    		2 5/8"1.47"Round7/64"SplitICS88055A4400000
     
    Uncoated
    7/64"
    		0.1094"
    		2 5/8"1.28"Round7/64"SplitICS2876A1610000
     

    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
    7/64"
    		0.1094"
    		2 1/4"0.5"Round7/64"SplitUltra Tool8882A14000000
     
    Uncoated
    7/64"
    		0.1094"
    		2 1/4"0.5"Round7/64"Four FacetUltra Tool8944A1400000
     

    High-Speed Steel Drill Bits for Wood Screws

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits for Wood Screws.
    Achieve a perfect fit for wood screws with bits that match their exact thread size and diameter. Wear and heat resistant, they're good for soft and hard woods.
    Drill Bit
    Size
    Decimal Size
    Equiv.
    For Screw
    Size
    Overall
    Lg.
    Max. Drilling
    Dp.
    Shank
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Uncoated
     
    Round Shank
    7/64"
    		0.1094"
    		No. 42 5/8"1 1/2"7/64"StandardW. L. Fuller3080A3700000
    7/64"
    		0.1094"
    		No. 44 5/8"2 3/4"7/64"StandardW. L. Fuller30915A7300000
     

    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
    7/64"
    		0.1094"
    		6"1.3"Round7/64"SplitChicago-Latrobe2986A1500000
    7/64"
    		0.1094"
    		12"1.3"Round7/64"SplitChicago-Latrobe2986A4900000
     

    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
    7/64"
    		0.1094"
    		2 5/8"0.65"Round7/64"SplitCleveland3146A11500000
     
    Extended Length
     
    Uncoated
    7/64"
    		0.1094"
    		6"1.28"Round7/64"SplitDormer Pramet8934A140000
    7/64"
    		0.1094"
    		12"1.28"Round7/64"SplitDormer Pramet8934A3400000
     

    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
     
    Diamond Coated
    7/64"
    		0.1094"
    		2 1/4"1"Round7/64"118°SplitFlutedUltra Tool3162A14000000
     
    Uncoated
    7/64"
    		0.1094"
    		2 1/4"1"Round7/64"140°BradFlutedUltra Tool2828A1200000
     

    High-Speed Steel Drill Bits for Sheet Metal

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits for Sheet Metal, Short Length, Round Shank, 1 Drilling End.

    Short Length

    Round Shank

    1 Drilling End

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits for Sheet Metal, Short Length, Round Shank, 2 Drilling Ends.

    Short Length

    Round Shank

    2 Drilling Ends

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

    Split

    Short flutes make shallow cuts through sheet metal and thin-wall tubing without snagging and deforming the material. High-speed steel bits are good for general purpose drilling in most metals.
    Short Length—The most rigid bits for drilling the straightest holes.
    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
    No. of Drilling
    Ends
    Mfr.
    1-11
    12-Up
    Short Length
     
    Black Oxide
    7/64"
    		0.1094"
    		2"0.5"Round7/64"Split2Viking Norseman Drill3163A520000000000
    7/64"
    		0.1094"
    		3"0.63"Round7/64"Split1Republic Drill3045A1200000000
     

    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.

    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

    Parabolic Flute

    Round Shank

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

    Split

    Standard

    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
    7/64"
    		0.1094"
    		2 3/8"1.09"High HelixRound7/64"SplitDormer Pramet31115A4400000
    7/64"
    		0.1094"
    		2 5/8"1.28"ParabolicRound7/64"SplitChicago-Latrobe29925A140000
     
    Titanium Nitride (TiN) Coated
    7/64"
    		0.1094"
    		2 5/8"1.28"ParabolicRound7/64"SplitChicago-Latrobe29925A540000
     
    Uncoated
    7/64"
    		0.1094"
    		2 5/8"1.28"ParabolicRound7/64"SplitDormer Pramet2754A440000
    7/64"
    		0.1094"
    		2 5/8"1.33"High HelixRound7/64"StandardChicago-Latrobe2912A1140000
     

    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
    7/64"
    		0.1094"
    		2 3/8"1.28"ParabolicRound7/64"SplitViking Norseman Drill3183A4400000
     
    Uncoated
    7/64"
    		0.1094"
    		2 3/8"1.28"ParabolicRound7/64"SplitViking Norseman Drill29925A9140000
     

    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
    7/64"
    		0.1094"
    		2 1/4"1"Round7/64"SplitUltra Tool3171A34000000
     

    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
    7/64"
    		0.1094"
    		2 3/8"1.3"ParabolicRound7/64"SplitGuhring3020A12000000
     

    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
    7/64"
    		0.1094"
    		2 5/8"1.28"Low HelixRound7/64"StandardChicago-Latrobe2928A2140000000000
     

    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
    7/64"0.1094"7/64"1/4"4 1/2"5/16"Steel
    		3016A816000000
    7/64"0.1094"7/64"1/4"9 1/2"5/16"Steel
    		3016A84300000
     
    back to top