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

    Precise-Cut High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Precise-Cut High-Speed Steel Drill Bits, Jobbers' Length, Round Shank.
    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Jobbers' Length

    Round Shank

    Standard

    Produce holes so precise that you don’t need to finish them with a reamer. The double-edged flutes keep these bits centered to drill straighter and smoother than other types, especially in hard metals and composites such as fiberglass. Also known as double-margin drill bits. High-speed steel is the versatile choice for drilling most metals.
    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.
    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
    3/16"
    		0.1875"
    		3 1/2"2.31"Round
    		3/16"Standard
    		3021A2600000
    13/64"
    		0.2031"
    		3 5/8"2.43"Round
    		13/64"Standard
    		3021A270000
    7/32"
    		0.2188"
    		3 3/4"2.5"Round
    		7/32"Standard
    		3021A280000
    1/4"
    		0.25"
    		4"2.75"Round
    		1/4"Standard
    		3021A310000
    17/64"
    		0.2656"
    		4 1/8"2.87"Round
    		17/64"Standard
    		3021A3200000
    9/32"
    		0.2813"
    		4 1/4"2.93"Round
    		9/32"Standard
    		3021A3300000
    5/16"
    		0.3125"
    		4 1/2"3.18"Round
    		5/16"Standard
    		3021A3500000
    3/8"
    		0.375"
    		5"3.62"Round
    		3/8"Standard
    		3021A3900000
    25/64"
    		0.3906"
    		5 1/8"3.75"Round
    		25/64"Standard
    		3021A4100000
    7/16"
    		0.4375"
    		5 1/2"4.06"Round
    		7/16"Standard
    		3021A4400000
    1/2"
    		0.5"
    		6"4.5"Round
    		1/2"Standard
    		3021A4800000
     

    Precise-Cut Carbide Drill Bits

    Image of Product. Front orientation. Drill Bits. Precise-Cut Carbide Drill Bits, Jobbers' Length, Round Shank.
    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Jobbers' Length

    Round Shank

    Standard

    Even on hard and difficult-to-machine materials, these bits cut holes so precise that you don’t need to finish them with a reamer. The double-edged flutes keep these bits centered to drill straighter and smoother than other types. Carbide bits are the hardest and most wear-resistant to stay sharp at high temperatures and faster speeds. Also known as double-margin drill bits.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Aluminum Titanium Nitride (AlTiN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron and titanium.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Aluminum Titanium Nitride (AlTiN) Coated
    1/8"
    		0.125"
    		2 1/2"0.75"Round
    		1/4"Standard
    		8980A550000000
    5/32"
    		0.1563"
    		2 5/8"0.87"Round
    		1/4"Standard
    		8980A59000000
    11/64"
    		0.1719"
    		2 5/8"0.87"Round
    		1/4"Standard
    		8980A62000000
    3/16"
    		0.1875"
    		2 5/8"1"Round
    		1/4"Standard
    		8980A63000000
    13/64"
    		0.2031"
    		2 5/8"1"Round
    		1/4"Standard
    		8980A65000000
    7/32"
    		0.2188"
    		2 5/8"1"Round
    		1/4"Standard
    		8980A67000000
    1/4"
    		0.25"
    		3 1/8"1.31"Round
    		1/4"Standard
    		8980A69000000
    9/32"
    		0.2813"
    		3 1/8"1.56"Round
    		5/16"Standard
    		8980A74000000
    5/16"
    		0.3125"
    		3 1/8"1.56"Round
    		5/16"Standard
    		8980A76000000
    3/8"
    		0.375"
    		3 1/2"1.84"Round
    		3/8"Standard
    		8980A82000000
    1/2"
    		0.5"
    		4 1/4"2.31"Round
    		1/2"Standard
    		8980A89000000
     
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