McMaster-Carr logo
    Filter by
    Drill Bit Point Type
    Industrial Info Compare
    System of Measurement
    Overall Length
    Attribute Image
    Flute Direction
    Sold As
    Number of Flutes
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Screw Size
    Industrial Info Compare
    Specifications Met
    Shank Diameter
    Shank Material
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    73 Products
    About Drill Bits
    industrial info icon

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

    High-Speed Steel Drill Bits

    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.
    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.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Pkg.
    Qty.
    Pkg.
    Jobbers' Length
    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Jobbers' Length, Round Shank.

    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

     
    Black Oxide
    25/64"
    0.3906"
    5 1/8"3.16"Round
    25/64"Split
    12901A134000000
    25/64"
    0.3906"
    5 1/8"3.16"Round
    25/64"Split
    62901A58500000
    W
    0.386"
    5 1/8"3.17"Round
    0.386"Split
    12901A16700000
    W
    0.386"
    5 1/8"3.17"Round
    0.386"Split
    62901A55600000
    X
    0.397"
    5 1/8"3.15"Round
    0.397"Split
    12901A16800000
    X
    0.397"
    5 1/8"3.15"Round
    0.397"Split
    62901A55700000
     
    Titanium Nitride (TiN) Coated
    25/64"
    0.3906"
    5 1/8"3.16"Round
    25/64"Split
    129115A73400000
    25/64"
    0.3906"
    5 1/8"3.16"Round
    25/64"Split
    629115A83400000
    W
    0.386"
    5 1/8"3.17"Round
    0.386"Split
    13199A4500000
    X
    0.397"
    5 1/8"3.15"Round
    0.397"Split
    13199A4600000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    25/64"
    0.3906"
    5 1/8"3.16"Round
    25/64"Split
    13202A6700000
    W
    0.386"
    5 1/8"3.17"Round
    0.386"Split
    13180A4500000
    X
    0.397"
    5 1/8"3.15"Round
    0.397"Split
    13180A4600000
     
    Uncoated
    25/64"
    0.3906"
    5 1/8"3.16"Round
    25/64"Standard
    18870A370000
    25/64"
    0.3906"
    5 1/8"3.16"Round
    25/64"Standard
    68870A13700000
    W
    0.386"
    5 1/8"3.17"Round
    0.386"Standard
    130595A550000
    W
    0.386"
    5 1/8"3.17"Round
    0.386"Standard
    630595A7900000
    X
    0.397"
    5 1/8"3.15"Round
    0.397"Standard
    130595A5600000
     
    Extended Length
    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Extended Length, Round Shank.

    Round Shank

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

    Standard

     
    Black Oxide
    1/8"
    0.125"
    5 1/8"2.56"Round
    1/8"Standard
    129315A1210000
    35 Ga.
    0.11"
    5 1/8"2.58"Round
    0.11"Standard
    13096A34800000
    34 Ga.
    0.111"
    5 1/8"2.58"Round
    0.111"Standard
    13096A34700000
    33 Ga.
    0.113"
    5 1/8"2.58"Round
    0.113"Standard
    13096A34600000
    32 Ga.
    0.116"
    5 1/8"2.57"Round
    0.116"Standard
    13096A34500000
    31 Ga.
    0.12"
    5 1/8"2.57"Round
    0.12"Standard
    13096A34400000
     
    Titanium Nitride (TiN) Coated
    1/8"
    0.125"
    5 1/8"2.75"Round
    1/8"Standard
    128965A7310000
     
    Uncoated
    1/8"
    0.125"
    5 1/8"2.75"Round
    1/8"Standard
    12939A650000
     

    Cobalt Steel Drill Bits

    Tough and wear resistant, cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials, such as nickel.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Extended Length—Drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard materials.
    Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Jobbers' Length, Round Shank.

    Round Shank

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

    Hex Shank

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

    Split

     
    Titanium Nitride (TiN) Coated
    25/64"
    0.3906"
    5 1/8"3.75"Round
    25/64"Split
    27995A534000000
    W
    0.386"
    5 1/8"3.75"Round
    0.386"Split
    27995A86300000
    X
    0.397"
    5 1/8"3.75"Round
    0.397"Split
    27995A86400000
     
    Uncoated
    25/64"
    0.3906"
    5 1/8"1.56"Hex
    25/64"Split
    4909N2500000
    25/64"
    0.3906"
    5 1/8"3.1"Round
    25/64"Split
    3069A3500000
    W
    0.386"
    5 1/8"3.17"Round
    0.386"Split
    3069A7500000
    X
    0.397"
    5 1/8"3.15"Round
    0.397"Split
    3069A7600000
     
    Extended Length
    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Extended Length, Round Shank.

    Round Shank

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

    Split

     
    Uncoated
    1/8"
    0.125"
    5 1/8"2.5"Round
    1/8"Split
    3063A11500000
    35 Ga.
    0.11"
    5 1/8"2.5"Round
    0.11"Split
    88555A7500000
    34 Ga.
    0.111"
    5 1/8"2.5"Round
    0.111"Split
    88555A7400000
    33 Ga.
    0.113"
    5 1/8"2.5"Round
    0.113"Split
    88555A7300000
    32 Ga.
    0.116"
    5 1/8"2.5"Round
    0.116"Split
    88555A7200000
    31 Ga.
    0.12"
    5 1/8"2.5"Round
    0.12"Split
    88555A7100000
     

    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
    Each
    Jobbers' Length
     
    Uncoated
    25/64"
    0.3906"
    5 1/8"3"Round
    25/64"Standard
    2940A32000000
    25/64"
    0.3906"
    5 1/8"3"Round
    25/64"Split
    31575A2400000
    W
    0.386"
    5 1/8"3"Round
    0.386"Standard
    2940A53400000
    W
    0.386"
    5 1/8"3.2"Round
    0.386"Split
    31575A53500000
    X
    0.397"
    5 1/8"3"Round
    0.397"Standard
    2940A53500000
    X
    0.397"
    5 1/8"3.2"Round
    0.397"Split
    31575A53600000
     
    Extended Length
     
    Uncoated
    1/8"
    0.125"
    5 1/8"2.44"Round
    1/8"Standard
    29465A1100000
     

    Hollow-Core Cutter Arbor Adapters

    Image of Product. Front orientation. Hollow-Core Cutter Arbor Adapters. Round Shank.

    Round

    Shank

    Pair these arbor adapters with hollow-core cutters when using a manual drill press or milling machine. Hollow-core cutters are also known as annular cutters.
    Shank
    Dia.
    For Cutter
    Shank Size
    Overall
    Lg.
    For Cutter Material
    Material
    Each
    Round Shank
    3/4"3/4"5 1/8"Cobalt Steel, High-Speed SteelHigh-Speed Steel31315A2540000000
     

    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
    Each
    Uncoated
    25/64"
    0.3906"
    5 1/8"3.75"Round
    25/64"60°Standard
    27465A63000000
    1/2"
    0.5"
    5 1/8"2.63"Round
    1/4"60°Standard
    27465A8800000
    W
    0.386"
    5 1/8"2.87"Round
    0.386"60°Standard
    27465A23500000
    X
    0.397"
    5 1/8"2.87"Round
    0.397"60°Standard
    27465A23600000
     

    Fast-Cutting Smooth-Finish Drill Bits for Wood

    Image of Product. Front orientation. Drill Bits. Fast-Cutting Smooth-Finish Drill Bits for Wood, Quick-Change Hex Shank, Screw Point.

    Quick-Change Hex Shank

    Screw Point

    Not only do these bits bore holes faster than standard smooth-finish bits, they create less friction and heat buildup to last longer. The spurred teeth have a long life, but they're less effective at guiding the bit so cuts on angled and overlapping holes tend to be rougher. Also known as multispur 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.
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Shank
    Size
    Drill Bit
    Point Type
    Each
    Black Oxide
     
    Quick-Change Hex Shank
    1 3/4"
    1.75"
    5 1/8"7/16"Screw
    3188A16000000
    2"
    2"
    5 1/8"7/16"Screw
    3188A1700000
    2 1/8"
    2.125"
    5 1/8"7/16"Screw
    3188A1800000
    2 1/4"
    2.25"
    5 1/8"7/16"Screw
    3188A1900000
    2 9/16"
    2.5625"
    5 1/8"7/16"Screw
    3188A2100000
     

    High-Speed Steel Precise-Cut Drill Bits for Wood

    Image of Product. Front orientation. Contains Inset, MultipleImages. Drill 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
    Each
    Uncoated
     
    Round Shank
    25/64"
    0.3906"
    5 1/8"3 3/4"3/8"Brad
    2926A121000000
     

    Precise-Cut High-Speed Steel Drill Bits

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

    Jobbers' Length

    Round Shank

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

    Standard

    Produce holes so precise that you don’t need to finish them with a reamer. The double-edged flutes keep these bits centered to drill straighter and smoother than other types, especially in hard metals and composites such as fiberglass. Also known as double-margin drill 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.
    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
    Each
    Jobbers' Length
     
    Titanium Nitride (TiN) Coated
    25/64"
    0.3906"
    5 1/8"3.75"Round
    25/64"Standard
    3021A41000000
     

    Countersink Drill Bits for Screws

    Image of Product. Front orientation. Contains Annotated. Countersink Drill Bits. Countersink Drill Bits for Screws.
    Also known as step drill bits, these bits countersink as they drill. The 82° countersink angle is compatible with the profile of flat- and oval-head inch screws. After multiple sharpenings, the drill bit diameter may become smaller.
    Dia.
    Lg.
    82°
    Countersink Angle
    For Screw
    Size
    Body
    Step
    Step
    Overall
    Shank
    Dia.
    Point
    Angle
    For Use On
    Each
    Uncoated High-Speed Steel
     
    2 Flutes
    No. 10
    0.386"0.196"5/8"5 1/8"0.3860"118°Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel8914A53000000
     

    Reduced-Shank High-Speed Steel Drill Bits

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

    Jobbers' Length

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

    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.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Black Oxide
    25/64"
    0.3906"
    5 1/8"3.75"Reduced Round
    3/8"Split
    8773A51000000
     

    Hole-Starting Cobalt Steel Drill Bits

    Image of Product. 120° Point Angle. Front orientation. Drill Bits. Hole-Starting Cobalt Steel Drill Bits, Short Length, Round Shank.

    120° Point Angle

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

    Standard

    Create an accurate starting place in your workpiece. Cut an indent with these bits, then continue drilling with a longer bit. The indent prevents slipping so the final hole is centered and precise. Cobalt steel resists wear to stay sharp when cutting hard materials, such as nickel. Also known as spotting drill bits.
    Short Length—The most rigid bits for drilling the straightest holes.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    Shank
    90° Point Angle
    120° Point Angle
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Each
    Short Length
     
    Uncoated
    3/4"
    0.75"
    5 1/8"1.63"Round
    3/4"Standard
    27445A1700000027445A27000000
     

    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
    Each
    Uncoated
     
    Round Shank
    1/8"
    0.125"
    No. 5
    5 1/8"2 3/4"1/8"Standard
    30915A74000000
     

    Anchor Installation Drill Bits for Masonry and Concrete

    A built-in stop ensures the right drilling depth every time so drop-in anchors don't fall too far into the hole. These bits have a carbide tip that resists wear and heat to stay sharp.
    SDS-Plus Shank for Hammer and Rotary Drilling
    Image of Product. Front orientation. Drill Bits. Anchor Installation Drill Bits for Masonry and Concrete, SDS-Plus Shank for Hammer and Rotary Drilling.
    Image of Specification. SDS-Plus Shank. Front orientation. SDS Plus Shank.

    SDS-Plus

    Shank

    The slotted shank fits SDS-Plus-drive rotary hammers, which rotate and hammer bits simultaneously to penetrate material. Also known as percussion or impact bits.
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Specs. Met
    Each
    Uncoated
     
    Standard Point
    3/8"
    0.375"
    5 1/8"1 1/16"ANSI B212.152652N3000000
     

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

    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
    Each
    Jobbers' Length
     
    Black Oxide
    25/64"
    0.3906"
    5 1/8"2.96"ParabolicRound
    25/64"Split
    29925A34000000
     
    Titanium Nitride (TiN) Coated
    25/64"
    0.3906"
    5 1/8"2.96"ParabolicRound
    25/64"Split
    29925A7400000
     
    Uncoated
    25/64"
    0.3906"
    5 1/8"2.96"ParabolicRound
    25/64"Split
    2754A6400000
    25/64"
    0.3906"
    5 1/8"3.16"High HelixRound
    25/64"Standard
    2912A13400000
     

    Left-Hand High-Speed Steel Drill Bits

    Image of Product. Uncoated. Side1 orientation. Drill Bits. Left-Hand High-Speed Steel Drill Bits, Jobbers' Length, Round Shank.

    Uncoated

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

    Standard

    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.
    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.
    Type
    Size
    Drill Bit
    Point Type
    1-5
    6-Up
    Jobbers' Length
     
    Uncoated
    25/64"
    0.3906"
    5 1/8"2.96"Round
    25/64"Standard
    2876A36000000000000
     

    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 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.
    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
    1-4
    5-Up
    Jobbers' Length
     
    Black Oxide
    25/64"
    0.3906"
    5 1/8"1.29"Round
    25/64"Split
    3146A135000000000000
     

    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
    1-5
    6-Up
    Jobbers' Length
     
    Uncoated
    25/64"
    0.3906"
    5 1/8"2.96"Low HelixRound
    25/64"Standard
    2928A234000000000000
     

    Oversized Long-Life Counterbore Drill Bits

    Image of Product. Front orientation. Contains Annotated. Counterbore Drill Bits. Oversized Long-Life Counterbore Drill Bits.
    These counterbores are often used when screw holes in sheets or layers are misaligned. Also known as subland drill bits, they last longer than standard counterbore drill bits because the diameter stays the same after sharpening. They drill and counterbore at the same time. After drilling and counterboring, tap the hole and install your fastener. The diameters account for the 1/32” or 1/64” oversized diameter rating.
    Dia.
    Lg.
    For Screw
    Size
    Body
    Step
    Step
    Overall
    No. of
    Flutes
    Point
    Angle
    For Use On
    Each
    Uncoated High-Speed Steel
     
    1/64" Oversize
    1/4"
    0.391"0.266"1/2"5 1/8"2118°Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel29525A54000000
     

    Ball-End Driver Shafts

    Image of Product. Front orientation. Driver Shafts. Ball-End Driver Shafts.
    Image of Attribute. Hex. Front orientation. Contains Annotated. For Hex Drives.

    Hex

    Image of Attribute. Front orientation. Contains Annotated, Border.
    Create your own tool by attaching these shafts to a handle, or use with socket wrenches and power tools. They have a ball end that allows angled entry to make good contact with the recess when a standard-tip shaft can’t.
    Drive
    Size
    Overall
    Lg.
    Max. Access
    Angle
    Material
    Each
    For Hex Drives
    5/32"5 1/8"25°Black Phosphate-Coated Steel6972A2100000
     
    back to top