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    29 Products
    About Drill Bits
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    Compare material, finish, length class, and decimal size equivalents.

    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
    Each
    Spear Bit
     
    Carbide Tipped/Uncoated
    1/8"
    0.125"
    2 1/4"1"Round
    7/64"Standard
    2954A100000
    3/16"
    0.1875"
    2 1/4"1"Round
    5/32"Standard
    2954A20000
    1/4"
    0.25"
    2 5/8"1"Round
    11/64"Standard
    2954A30000
    5/16"
    0.3125"
    3"1"Round
    7/32"Standard
    2954A40000
    3/8"
    0.375"
    3 5/8"1"Round
    15/64"Standard
    2954A500000
    1/2"
    0.5"
    3 5/8"1"Round
    5/16"Standard
    2954A700000
    5/8"
    0.625"
    3 3/4"0.25"Round
    5/16"Standard
    2954A7100000
    3/4"
    0.75"
    4"0.25"Round
    5/16"Standard
    2954A7200000
    7/8"
    0.875"
    4"0.25"Round
    5/16"Standard
    2954A7300000
    1"
    1"
    4"0.25"Round
    5/16"Standard
    2954A7400000
     

    Drill Bits for Glass and Ceramic

    Image of System. Front orientation. Contains Annotated, MultipleImages. Drill Bits. Drill Bits for Glass and Ceramic, Core Bit.

    Core Bit

    Quickly create large holes in sheets of glass and ceramic using a drill press. These bits drill smoothly through fragile materials, reducing the chance of chipping and cracking. They have a diamond coating, the hardest finish for the longest life. Bits require an adapter (sold separately) to supply coolant during drilling.
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Bit
    ID
    Diamond
    Tip Lg.
    Diamond
    Tip Grit
    Thread
    Size
    Each
    Core Bit
     
    Diamond Coated
    3/32"
    0.0938"
    3 1/2"2"0.043"1/8"1005/8"-18
    2868A460000000
    1/8"
    0.125"
    3 1/2"2"0.075"1/4"1005/8"-18
    2868A21000000
    5/32"
    0.1563"
    3 1/2"2"0.106"1/4"1005/8"-18
    2868A22000000
    3/16"
    0.1875"
    3 1/2"2"0.137"1/4"1005/8"-18
    2868A23000000
    7/32"
    0.2188"
    3 1/2"2"0.169"1/4"1005/8"-18
    2868A27000000
    1/4"
    0.25"
    3 1/2"2"0.2"1/4"1005/8"-18
    2868A24000000
    9/32"
    0.2813"
    3 1/2"2"0.231"1/4"1005/8"-18
    2868A28000000
    5/16"
    0.3125"
    3 1/2"2"0.262"1/4"1005/8"-18
    2868A29000000
    3/8"
    0.375"
    3 1/2"2"0.325"1/4"1005/8"-18
    2868A25000000
    7/16"
    0.4375"
    3 1/2"2"0.387"1/4"1005/8"-18
    2868A33000000
    1/2"
    0.5"
    3 1/2"2"0.446"1/4"1005/8"-18
    2868A26000000
    9/16"
    0.5625"
    3 1/2"2"0.504"1/4"1005/8"-18
    2868A18000000
    5/8"
    0.625"
    3 1/2"2"0.562"1/4"1005/8"-18
    2868A35000000
    3/4"
    0.75"
    3 1/2"2"0.692"1/4"1005/8"-18
    2868A36000000
    7/8"
    0.875"
    3 1/2"2"0.817"1/4"1005/8"-18
    2868A38000000
    1"
    1"
    3 1/2"2"0.94"1/4"1005/8"-18
    2868A37000000
    1 1/4"
    1.25"
    3 1/2"2"1.19"1/4"1005/8"-18
    2868A39000000
     
    Core Bit Adapters
    Shank
    Size
    Shank
    Type
    Shank
    Lg.
    Body
    Lg.
    For Thread
    Size
    Inlet Pipe
    Size
    Inlet Thread
    Type
    Each
    3/8"Round1 1/2"3 1/2"5/8"-181/8NPT2868A120000000
    1/2"Round1 1/2"3 1/2"5/8"-181/8NPT2868A11000000
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