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    11 Products
    About Drill Bits
    industrial info icon

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

    Material

    For Material

    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
    13/32"
    		0.4063"
    		36"32"Round
    		0.7498"Standard
    		2744N8760000000
    1/2"
    		0.5"
    		36"32"Round
    		0.7498"Standard
    		2744N977000000
     

    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-Plus Shank for Hammer and Rotary Drilling
    Image of Product. Front orientation. Drill Bits. Carbide-Tipped 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"
    		36"34"ANSI B212.158948A94000000
    5/8"
    		0.625"
    		36"34"ANSI B212.158948A9600000
     

    High-Speed Steel Drill Bits for Wire Installation

    Image of ProductInUse. Front orientation. Contains Annotated. Drill Bits. High-Speed Steel Drill Bits for Wire Installation.
    Feed electrical wire, data cables, and phone lines through walls with the same tool used to make the hole. Once you've drilled, insert wire through the bit's hollow shaft to the other side of the wall. These are simpler to use than flexible-shaft bits since you do not need to strip the end of the wire. Also known as bell hanger 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.
    Max. Drilling
    Dp.
    Shank
    Size
    Drill Bit
    Point Type
    Each
    Black Oxide
     
    Round Shank
    21/64"
    		0.328"
    		36"3.31"5/16"Standard
    		2934A48000000
    25/64"
    		0.39"
    		36"3.88"3/8"Standard
    		2934A5500000
    29/64"
    		0.453"
    		36"4.19"7/16"Standard
    		2934A5800000
    33/64"
    		0.515"
    		36"4.81"1/2"Standard
    		2934A6500000
     

    Carbide-Tipped Drill Bits for Wire Installation

    Image of ProductInUse. Front orientation. Contains Annotated. Drill Bits. Carbide-Tipped Drill Bits for Wire Installation .
    These bits are hard enough to drill through masonry and concrete as well as wood. Feed electrical wire, data cables, and phone lines through walls with the same tool used to make the hole. Once you've drilled, insert wire through the bit's hollow shaft to the other side of the wall. These are simpler to use than flexible-shaft bits since you do not need to strip the end of the wire. Also known as bell hanger 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.
    Max. Drilling
    Dp.
    Shank
    Size
    Drill Bit
    Point Type
    Each
    Black Oxide/Carbide Tipped
     
    Round Shank
    21/64"
    		0.328"
    		36"4"5/16"Standard
    		2934A45000000
    7/16"
    		0.438"
    		36"4"3/8"Standard
    		2934A5200000
    9/16"
    		0.563"
    		36"4"1/2"Standard
    		2934A6200000
     
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