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    64 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
    		2744N1250000000
    1/8"
    		0.125"
    		12"8.5"Round
    		0.7498"Standard
    		2744N153000000
    1/8"
    		0.125"
    		16"12.5"Round
    		0.7498"Standard
    		2744N209000000
    5/32"
    		0.1563"
    		10"7"Round
    		0.7498"Standard
    		2744N211000000
    5/32"
    		0.1563"
    		12"8.5"Round
    		0.7498"Standard
    		2744N24000000
    5/32"
    		0.1563"
    		16"12.5"Round
    		0.7498"Standard
    		2744N285000000
    3/16"
    		0.1875"
    		10"7"Round
    		0.7498"Standard
    		2744N302000000
    3/16"
    		0.1875"
    		12"8.5"Round
    		0.7498"Standard
    		2744N326000000
    3/16"
    		0.1875"
    		16"12.5"Round
    		0.7498"Standard
    		2744N349000000
    7/32"
    		0.2188"
    		10"7"Round
    		0.7498"Standard
    		2744N364000000
    7/32"
    		0.2188"
    		12"8.5"Round
    		0.7498"Standard
    		2744N365000000
    7/32"
    		0.2188"
    		16"12.5"Round
    		0.7498"Standard
    		2744N381000000
    7/32"
    		0.2188"
    		22"18"Round
    		0.7498"Standard
    		2744N43000000
    1/4"
    		0.25"
    		10"7"Round
    		0.7498"Standard
    		2744N435000000
    1/4"
    		0.25"
    		12"8.5"Round
    		0.7498"Standard
    		2744N442000000
    1/4"
    		0.25"
    		16"12.5"Round
    		0.7498"Standard
    		2744N455000000
    1/4"
    		0.25"
    		22"18"Round
    		0.7498"Standard
    		2744N465000000
    1/4"
    		0.25"
    		28"24"Round
    		0.7498"Standard
    		2744N473000000
    17/64"
    		0.2656"
    		10"7"Round
    		0.7498"Standard
    		2744N48000000
    17/64"
    		0.2656"
    		12"8.5"Round
    		0.7498"Standard
    		2744N536000000
    17/64"
    		0.2656"
    		16"12.5"Round
    		0.7498"Standard
    		2744N576000000
    17/64"
    		0.2656"
    		22"18"Round
    		0.7498"Standard
    		2744N583000000
    17/64"
    		0.2656"
    		28"24"Round
    		0.7498"Standard
    		2744N589000000
    9/32"
    		0.2813"
    		10"7"Round
    		0.7498"Standard
    		2744N619000000
    9/32"
    		0.2813"
    		12"8.5"Round
    		0.7498"Standard
    		2744N622000000
    9/32"
    		0.2813"
    		16"12.5"Round
    		0.7498"Standard
    		2744N625000000
    9/32"
    		0.2813"
    		22"18"Round
    		0.7498"Standard
    		2744N627000000
    9/32"
    		0.2813"
    		28"24"Round
    		0.7498"Standard
    		2744N631000000
    5/16"
    		0.3125"
    		10"7"Round
    		0.7498"Standard
    		2744N656000000
    5/16"
    		0.3125"
    		12"8.5"Round
    		0.7498"Standard
    		2744N664000000
    5/16"
    		0.3125"
    		16"12.5"Round
    		0.7498"Standard
    		2744N674000000
    5/16"
    		0.3125"
    		22"18"Round
    		0.7498"Standard
    		2744N704000000
    5/16"
    		0.3125"
    		28"24"Round
    		0.7498"Standard
    		2744N718000000
    3/8"
    		0.375"
    		10"7"Round
    		0.7498"Standard
    		2744N751000000
    3/8"
    		0.375"
    		12"8.5"Round
    		0.7498"Standard
    		2744N759000000
    3/8"
    		0.375"
    		16"12.5"Round
    		0.7498"Standard
    		2744N787000000
    3/8"
    		0.375"
    		22"18"Round
    		0.7498"Standard
    		2744N79000000
    3/8"
    		0.375"
    		28"24"Round
    		0.7498"Standard
    		2744N793000000
    13/32"
    		0.4063"
    		10"7"Round
    		0.7498"Standard
    		2744N797000000
    13/32"
    		0.4063"
    		12"8.5"Round
    		0.7498"Standard
    		2744N831000000
    13/32"
    		0.4063"
    		16"12.5"Round
    		0.7498"Standard
    		2744N835000000
    13/32"
    		0.4063"
    		22"18"Round
    		0.7498"Standard
    		2744N84000000
    13/32"
    		0.4063"
    		28"24"Round
    		0.7498"Standard
    		2744N861000000
    13/32"
    		0.4063"
    		36"32"Round
    		0.7498"Standard
    		2744N876000000
    1/2"
    		0.5"
    		10"7"Round
    		0.7498"Standard
    		2744N892000000
    1/2"
    		0.5"
    		12"8.5"Round
    		0.7498"Standard
    		2744N906000000
    1/2"
    		0.5"
    		16"12.5"Round
    		0.7498"Standard
    		2744N95000000
    1/2"
    		0.5"
    		22"18"Round
    		0.7498"Standard
    		2744N955000000
    1/2"
    		0.5"
    		28"24"Round
    		0.7498"Standard
    		2744N961000000
    1/2"
    		0.5"
    		36"32"Round
    		0.7498"Standard
    		2744N977000000
     

    Drill Bushings for Extended-Length Drill Bits

    Image of System. Front orientation. Exploded view. Contains Annotated. Drill Bushings. Drill Bushings for Extended-Length Drill Bits.
    Guide extended-length drill bits into workpieces to create deep, accurate holes. Also known as gun drill bushings, these bushings are used with gun drilling machines and CNCs. Rather than installing them directly in your fixture, you slide these bushings in and out of sleeves (sold separately). This means you can replace a worn bushing quickly, without damaging your fixture. Swap in a bushing with a different ID, and you can use the same hole in your fixture for a different-sized bit.
    GDI Drill Bushings
    Image of Product. Front orientation. Drill Bushings. Drill Bushings for Extended-Length Drill Bits, GDI Drill Bushings.
    Tolerance
    ID
    OD
    Lg.
    For Drill
    Bit Size
    ID
    OD
    Lg.
    Material
    Hardness
    Each
    0.125"1/4"1/2"1/8"0" to 0.0002"0.0013" to 0.0016"-0.01" to 0.01"SteelRockwell C627607N15000000
    0.1563"5/16"1/2"5/32"0" to 0.0002"0.0013" to 0.0016"-0.01" to 0.01"SteelRockwell C627607N1600000
    0.1875"5/16"1/2"3/16"0" to 0.0002"0.0013" to 0.0016"-0.01" to 0.01"SteelRockwell C627607N1700000
    0.2188"1/2"1/2"7/32"0" to 0.0002"0.0014" to 0.0017"-0.01" to 0.01"SteelRockwell C627607N1800000
    0.25"1/2"1/2"1/4"0" to 0.0002"0.0014" to 0.0017"-0.01" to 0.01"SteelRockwell C627607N1900000
    0.2656"1/2"1/2"17/64"0" to 0.0002"0.0014" to 0.0017"-0.01" to 0.01"SteelRockwell C627607N2100000
    0.2813"1/2"1/2"9/32"0" to 0.0002"0.0014" to 0.0017"-0.01" to 0.01"SteelRockwell C627607N2200000
    0.3125"1/2"1/2"5/16"0" to 0.0002"0.0014" to 0.0017"-0.01" to 0.01"SteelRockwell C627607N2300000
    0.375"3/4"1/2"3/8"0" to 0.0002"0.0015" to 0.0018"-0.01" to 0.01"SteelRockwell C627607N2400000
    0.5"3/4"1/2"1/2"0" to 0.0002"0.0015" to 0.0018"-0.01" to 0.01"SteelRockwell C627607N2500000
    GDL Drill Bushing Sleeves
    Image of Product. Front orientation. Drill Bushings. Drill Bushings for Extended-Length Drill Bits, GDL Drill Bushing Sleeves.
    Image of Attribute. Side1 orientation. Contains Annotated. Drill Bushings for Extended-Length Drill Bits, GDL Drill Bushing Sleeves.
    Head
    Tolerance
    For Bushing
    OD
    ID
    OD
    Lg.
    For Drill Bit Size
    OD
    Thk.
    ID
    OD
    Lg.
    Material
    Hardness
    Each
    1/4"0.2515"1"1"1/8"1 37/64"3/8"0" to 0.0002"-0.0002" to 0"-0.01" to 0.01"SteelRockwell C627607N110000000
    5/16"0.314"1"1"5/32", 3/16"1 37/64"3/8"0" to 0.0002"-0.0002" to 0"-0.01" to 0.01"SteelRockwell C627607N12000000
    1/2"0.5016"1"1"7/32", 1/4", 17/64", 9/32", 5/16"1 37/64"3/8"0" to 0.0002"-0.0002" to 0"-0.01" to 0.01"SteelRockwell C627607N13000000
    3/4"0.7517"1"1"3/8", 1/2"1 37/64"3/8"0" to 0.0002"-0.0002" to 0"-0.01" to 0.01"SteelRockwell C627607N14000000
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