McMaster-Carr logo
    Filter by
    System of Measurement
    Overall Length
    Attribute Image
    Length Class
    Industrial Info Compare
    Drill Bit Point Type
    Industrial Info Compare
    Length
    Point Angle
    Industrial Info Snippet
    Attribute Image
    Number of Flutes
    Sold As
    Flute Direction
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Diameter
    Attribute Image
    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)
    34 Products
    About Drill Bits
    industrial info icon

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

    Coolant-Fed Carbide-Tipped Drill Bits

    Image of Product. Front orientation. Contains Inset. Drill Bits. Coolant-Fed Carbide-Tipped Drill Bits, Extended Length, Round Shank.
    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Extended Length

    Round Shank

    Standard

    Channel coolant through the holes to reduce heat and evacuate chips more efficiently than other bits. These are designed for CNC machines that supply coolant through the spindle rather than an external source, such as a hose and nozzle. Coolant flows directly from the bit's tip onto the drilling surface. This speeds up cuts and leads to excellent performance in deep holes and tough materials such as stainless steel and titanium. A lower-price alternative to solid carbide, they stay sharp when drilling abrasive material but won’t last as long.
    Extended Length—Also known as gun drills, 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
    Extended Length
     
    Uncoated
    1/8"
    		0.125"
    		10"7"Round
    		0.7498"Standard
    		000000000000000
    5/32"
    		0.1563"
    		10"7"Round
    		0.7498"Standard
    		00000000000000
    3/16"
    		0.1875"
    		10"7"Round
    		0.7498"Standard
    		00000000000000
    7/32"
    		0.2188"
    		10"7"Round
    		0.7498"Standard
    		00000000000000
    1/4"
    		0.25"
    		10"7"Round
    		0.7498"Standard
    		00000000000000
    17/64"
    		0.2656"
    		10"7"Round
    		0.7498"Standard
    		0000000000000
    9/32"
    		0.2813"
    		10"7"Round
    		0.7498"Standard
    		00000000000000
    5/16"
    		0.3125"
    		10"7"Round
    		0.7498"Standard
    		00000000000000
    3/8"
    		0.375"
    		10"7"Round
    		0.7498"Standard
    		00000000000000
    13/32"
    		0.4063"
    		10"7"Round
    		0.7498"Standard
    		00000000000000
    1/2"
    		0.5"
    		10"7"Round
    		0.7498"Standard
    		00000000000000
     

    High-Speed Steel Drill Bits

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

    Jobbers' Length

    Morse Taper Shank

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

    Extended Length

    Round Shank

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

    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.
    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.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Black Oxide
    7/8"
    		0.875"
    		10"4.81"Morse Taper
    		Morse 2Standard
    		000000000000000
     
    Extended Length
     
    Black Oxide
    13/16"
    		0.8125"
    		10"4.9"Round
    		13/16"Standard
    		00000000000000
    7/8"
    		0.875"
    		10"4.81"Round
    		7/8"Standard
    		00000000000000
    29/32"
    		0.9063"
    		10"4.76"Round
    		29/32"Standard
    		00000000000000
     

    Carbide-Tipped Drill Bits

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits, Extended Length, Round Shank.
    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Extended Length

    Round Shank

    Standard

    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.
    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
    Extended Length
     
    Uncoated
    13/16"
    		0.8125"
    		10"4.91"Round
    		13/16"Standard
    		00000000000000
    7/8"
    		0.875"
    		10"4.81"Round
    		7/8"Standard
    		0000000000000
     

    Tapping Screw Installation Drill Bits for Masonry and Concrete

    Create an undersized hole so concrete tapping screws fit tightly once they're threaded into place. These bits are slightly smaller than the matching screw size. They 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. Tapping Screw 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.
    For Screw
    Size
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Each
    Uncoated
     
    Standard Point
    3/16"
    		3/16"
    		0.1875"
    		10"8"0000000000000
    7/32"
    		7/32"
    		0.2188"
    		10"8"000000000000
    3/8"
    		3/8"
    		0.375"
    		10"8"000000000000
    1/2"
    		1/2"
    		0.5"
    		10"8"000000000000
    1"
    		1"
    		1"
    		10"8"000000000000
    1 1/8"
    		1 1/8"
    		1.125"
    		10"8"000000000000
     

    Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Jobbers' Length, Morse Taper Shank.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Jobbers' Length

    Morse Taper Shank

    Split

    Tough and wear resistant, cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials, such as nickel.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    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
     
    Titanium Nitride (TiN) Coated
    5/8"
    		0.625"
    		10"4.88"Morse Taper
    		Morse 2Split
    		000000000000000
     
    Uncoated
    11/16"
    		0.6875"
    		10"5.38"Morse Taper
    		Morse 3Split
    		0000000000000
     

    Carbide-Tipped Drill Bits for Masonry and Concrete

    Crush rather than cut material so bits don’t jam or overheat while drilling masonry and concrete. The ultra-hard carbide tip breaks masonry into pieces and the widely spaced flutes channel them out of the hole. These bits stay sharp, resisting wear and heat that will dull or break other bits.
    SDS-Max Shank for Hammer and Rotary Drilling
    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits for Masonry and Concrete, SDS-Max Shank for Hammer and Rotary Drilling.
    Image of Specification. SDS-Max Shank. Front orientation. SDS Max Shank.

    SDS-Max

    Shank

    The slotted shank is compatible with SDS-Max-drive rotary hammers. These bits use simultaneous rotary and hammering action 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"
    		10"4"ANSI B212.150000000000000
     
    Spline Shank for Hammer and Rotary Drilling
    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits for Masonry and Concrete, Spline Shank for Hammer and Rotary Drilling.
    Image of Specification. Spline Shank. Front orientation. Spline Shank.

    Spline

    Shank

    The shank has 12 splines for use with a spline-drive rotary hammer, which rotate and hammers 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"
    		10"4"ANSI B212.150000000000000
     

    Handheld Guides for Flexible-Shaft Drill Bits

    Image of ProductInUse. Hand Guide with Drill Bit. Front orientation. Drill Bit Guides. Handheld Guides for Flexible-Shaft Drill Bits.
    Image of Product. Hand Guide. Front orientation. Drill Bit Guides. Handheld Guides for Flexible-Shaft Drill Bits.

    Hand Guide with Drill Bit

    Hand Guide

    Use this guide to position flexible-shaft drill bits.
    For
    Drill Bit
    Shank
    Type
    Shaft Size
    Lg.
    Material
    Each
    Round
    		3/16", 1/4"10"Steel000000000000

    Adjustable-Length Extensions for Quick-Change Hex-Shank Drill Bits

    Image of Product. Shown Fully Extended. Front orientation. Drill Bit Extensions. Adjustable-Length Extensions for Quick-Change Hex-Shank Drill Bits.

    Shown Fully Extended

    Adjust these extensions to the desired length. They have a quick-change mechanism for fast bit changes. Attach to the shank of a drill bit to extend its reach.
    For Drill Bit
    Shank Size
    Shank
    Size
    Overall Lg.
    OD
    Shank
    Material
    Body
    Material
    Each
    One-Piece Extensions
    1/4"1/4"8", 10", 12"3/4"SteelAluminum
    		0000000000000
     

    Bit Adapters

    Image of Product. Front orientation. Bit Adapters. Bit Adapters, Magnet Bit Holder.

    Magnet Bit

    Holder

    Image of Product. Front orientation. Bit Adapters. Bit Adapters, Retaining-Ring Bit Holder.

    Retaining-Ring Bit

    Holder

    Use hex-shank bits (also known as insert bits) in drills and powered screwdrivers. These adapters have a groove in the shank to fit in a power-tool chuck.
    Hex Shank
    Size
    For Bit
    Shank Type
    For Bit Hex
    Shank Size
    Overall
    Lg.
    Material
    Each
    Magnet Bit Holder
    1/4"Hex1/4"10"Stainless Steel
    		0000000000000
     
    Retaining-Ring Bit Holder
    1/4"Hex1/4"10"Stainless Steel
    		000000000000
     

    Ratcheting Bit Screwdrivers

    Image of Product. Front orientation. Screwdrivers. Ratcheting Bit Screwdrivers, Style B.

    Style B

    Drive multiple screw styles and sizes without lifting and repositioning your tool. A ratcheting handle drives screws with smooth, continuous motion to save time with every turn. Just snap one of the included bits onto the shaft and get cranking.
    Style B—Bits store neatly inside the handle so you won't lose them.
    Chrome-Plated Steel—The bright, shiny plating resists salt water and chemicals better than other finishes and is less likely to wear off.
    Ultra Grip—Designed for maximum comfort and control. The soft plastic coating and contoured shape reduce strain to prevent cramping and soreness during repetitive tasks. They also guarantee a secure grip.
    Shaft
    Bit
    Style
    No. of
    Sizes
    Sizes Included
    For Bit Hex
    Shank Size
    Overall
    Lg.
    Material
    Lg.
    Overall
    Wd.
    Material
    Holding
    Mechanism
    Grip
    Style
    Each
    B10Phillips: No. 1, No. 2
    Pozidriv®: No. 1, No. 2
    Slotted: 3/16", 1/4"
    Square: No. 1, No. 2
    Torx: T10, T15    		1/4"10"Chrome-Plated Steel3"3/8"SteelMagnetUltra Grip0000000000000

    Tight-Clearance Bit Screwdrivers with Offset Tip

    Image of Product. Front orientation. Screwdrivers. Tight-Clearance Bit Screwdrivers with Offset Tip.
    Fasten multiple screw sizes and styles in spots with low overhead clearance. The offset head reaches into engine compartments and other spaces where there isn't room to turn a standard driver. Snap one of the included bits onto the shaft and stow the others in the handle so you won't lose them.
    Steel—Best for dry environments, since moisture will cause it to rust.
    Ultra Grip—Designed for maximum comfort and control. The soft plastic coating and contoured shape reduce strain to prevent cramping and soreness during repetitive tasks. They also guarantee a secure grip.
    Shaft
    Bit
    No. of
    Sizes
    Sizes Included
    For Bit Hex
    Shank Size
    Overall
    Lg.
    Offset
    Angle
    Material
    Lg.
    Overall
    Wd.
    Material
    Holding
    Mechanism
    Grip
    Style
    Each
    4Phillips: No. 1, No. 2
    Slotted: 3/16", 1/4"    		1/4"10"105°Steel4 3/4"1"SteelMagnetUltra Grip0000000000000

    Fastener-Holding Nutdriver Bits

    Image of Product. Front orientation. Nutdriver Bits. Fastener-Holding Nutdriver Bits, Quick-Change Hex Shank.
    Image of Attribute. Front orientation. Contains Annotated.
    Image of Specification. External Hex. Front orientation. Contains Annotated.

    Quick-Change Hex

    Shank

    External

    Hex

    A mechanism inside the bit holds hex nuts and cap screws in place.
    Quick-Change Hex Shank—Quick-change hex shank bits have a groove in the shank and fit directly into power tools without an adapter. They offer more reach for recessed holes and less wobble compared to a hex shank bit used with an adapter.
    Magnet—Bits with magnet hold steel fasteners.
    Overall
    Drive
    Size
    Bolt
    Clearance
    Lg.
    Dia.
    Fastener-Holding
    Mechanism
    Material
    Each
    1/4" Quick-Change Hex Shank
    1/4"1/8"10"0.438"MagnetSteel000000000000
     
    back to top