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    6 Products
    About Drill Bits
    industrial info icon

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

    Material

    Performance

    Shank Type

    Fast-Cutting Smooth-Finish Drill Bits for Wood

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

    Round Shank

    Standard 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.
    Max. Drilling
    Dp.
    Shank
    Size
    Drill Bit
    Point Type
    Each
    Black Oxide
     
    Quick-Change Hex Shank
    2 1/8"
    		2.125"
    		5 1/8"—7/16"Screw
    		3188A18000000
     
    Uncoated
     
    Round Shank
    2 1/8"
    		2.125"
    		6"4"1/2"Standard
    		2890A3800000
     

    Carbide-Tipped Smooth-Finish Drill Bits for Wood

    Image of Product. Carbide-Tipped Steel. Front orientation. Drill Bits. Carbide-Tipped Smooth-Finish Drill Bits for Wood.

    Carbide-Tipped Steel

    Carbide tipped to stay sharp longer than tool steel bits, these are better on tough and abrasive materials, such as plywood and hardwoods. They have multiple teeth that cut away large amounts of material to bore clean, flat-bottom holes in wood. The center guide point keeps the bit stable and centered for drilling straight, angled, and overlapping holes, like those used create joints. Also known as Forstner bits.
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Shank
    Size
    Drill Bit
    Point Type
    Each
    Carbide Tipped/Uncoated
     
    Round Shank
    2 1/8"
    		2.125"
    		3 1/2"3"3/8"Standard
    		8799A470000000
     
    Extensions
    Each
    5" Extension for 5/16" Shank Size3216A71000000
    10" Extension for 5/16" Shank Size3216A7200000

    Smooth-Finish Drill Bits for Wood

    Image of Product. Front orientation. Drill Bits. Smooth-Finish Drill Bits for Wood, Round Shank.

    Round Shank

    Multiple teeth cut away large amounts of material to bore clean, flat-bottom holes in wood. The center guide point keeps the bit stable and centered for drilling straight, angled, and overlapping holes, like those used create joints. Also known as Forstner bits.
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Shank
    Size
    Drill Bit
    Point Type
    Each
    Uncoated
     
    Round Shank
    2 1/8"
    		2.125"
    		3 1/2"3"13/32"Standard
    		3216A36000000
     
    Extensions
    Each
    5" Extension for 5/16" Shank Size3216A71000000
    10" Extension for 5/16" Shank Size3216A7200000
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