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    37 Products
    About Drill Bits
    industrial info icon

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

    High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Jobbers' Length, Morse Taper Shank.

    Jobbers' Length

    Morse Taper Shank

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Short Length, Round Shank.

    Short Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Extended Length, Round Shank.

    Extended Length

    Round Shank

    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Standard

    Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Short Length—The most rigid bits for drilling the straightest holes.
    Extended Length—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.
    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.
    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.
    Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Black Oxide
    33/64"
    		0.5156"
    		6 5/8"4.03"Round
    		33/64"Standard
    		2931A44000000
    33/64"
    		0.5156"
    		8 1/2"3.85"Morse Taper
    		Morse 2Standard
    		2929A36800000
     
    Titanium Nitride (TiN) Coated
    33/64"
    		0.5156"
    		6 5/8"4.03"Round
    		33/64"Standard
    		3022A6300000
     
    Uncoated
    33/64"
    		0.5156"
    		6 5/8"4.03"Round
    		33/64"Standard
    		8870A4600000
     
    Short Length
     
    Uncoated
    33/64"
    		0.5156"
    		3 7/8"1.6"Round
    		33/64"Standard
    		8947A24100000
     
    Extended Length
     
    Black Oxide
    33/64"
    		0.5156"
    		8"3.97"Round
    		33/64"Standard
    		29315A16200000
    33/64"
    		0.5156"
    		12"7.96"Round
    		33/64"Standard
    		2939A3800000
    33/64"
    		0.5156"
    		18"11.96"Round
    		33/64"Standard
    		2955A34000000
     

    Reduced-Shank High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Reduced-Shank High-Speed Steel Drill Bits, Jobbers' Length.

    Jobbers' Length

    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Standard

    Split

    Cut large holes with drill presses and portable drills that have a standard-size chuck. The shank on these bits has a smaller diameter than the cutting tip. High-speed steel is good for general purpose drilling in most metals. Also known as Silver and Deming bits.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    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.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Black Oxide
    33/64"
    		0.5156"
    		6"2.1"Reduced Round
    		1/2"Standard
    		2933A51000000
    33/64"
    		0.5156"
    		6"2.1"Reduced Round/3-Flat
    		1/2"Split
    		2905A1100000
     

    Reduced-Shank Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Reduced-Shank Cobalt Steel Drill Bits, Jobbers' Length.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Jobbers' Length

    Split

    More wear resistant than high-speed steel, these bits cut large holes with tools that have a standard-size chuck. The shank has a smaller diameter than the cutting tip and fits drill presses and portable drills. Cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials such as nickel. Also known as Silver and Deming bits.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Uncoated
    33/64"
    		0.5156"
    		6"2.1"Reduced Round
    		1/2"Split
    		8939A41000000
     

    Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Jobbers' Length, Round Shank.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Jobbers' Length

    Round Shank

    Split

    Tough and wear resistant, cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials, such as nickel.
    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.
    Titanium Aluminum Nitride (TiAlN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron, titanium, and fiberglass.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    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
    33/64"
    		0.5156"
    		6 5/8"4.81"Round
    		33/64"Split
    		27995A543000000
     
    Titanium Aluminum Nitride (TiAlN) Coated
    33/64"
    		0.5156"
    		6"3.2"Round
    		33/64"Split
    		2753A155000000
     
    Uncoated
    33/64"
    		0.5156"
    		6 5/8"4"Round
    		33/64"Split
    		3069A8100000
     

    Carbide-Tipped Drill Bits

    Image of Product. Front orientation. Drill Bits. 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

    Performance similar to solid carbide but at a lower price point. Like carbide bits, these are stronger than cobalt and high-speed steel and maintain their sharp edges when drilling abrasive material. However, when drilling tough metals like iron and hardened steel, upgrade to carbide for longer life.
    Extended Length—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
    33/64"
    		0.5156"
    		8"3.98"Round
    		33/64"Standard
    		29465A38000000
     

    Smooth-Finish Carbide Drill Bits

    Image of Product. Front orientation. Drill Bits. Smooth-Finish Carbide Drill Bits, Jobbers' Length, Round Shank.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Jobbers' Length

    Round Shank

    Split

    With more cutting edges than other drill bits, these cut continuously and consistently for a smoother finish. They also stay centered to produce holes that are straighter and more accurate. However, since there’s less space between the cutting edges, they don’t clear chips as quickly. Made of carbide, these are the hardest and most wear-resistant drill bits you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Uncoated—Excellent for a range of materials but won't last as long as coated bits.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Uncoated
    33/64"
    		0.5156"
    		4 3/4"3"Round
    		33/64"Split
    		3171A540000000
     

    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
    33/64"
    		0.515"
    		18"4.81"1/2"Standard
    		2934A63000000
    33/64"
    		0.515"
    		36"4.81"1/2"Standard
    		2934A6500000
     

    Drill Bit Guides

    Image of ProductInUse. Front orientation. Contains Annotated, MultipleImages. Drill Bit Guides. Drill Bit Guides.
    Image of Product. Front orientation. Drill Bit Guides. Drill Bit Guides.
    Place these guides on your workpiece to drill precise holes without building a fixture. They'll even work on corners and round surfaces. Lines marked on the side allow you to align your holes accurately. Made of hardened steel, they’re tough enough to withstand frequent use.
    For Drill Bit Size
    For Drill Bit Size Decimal Equiv.
    Lg.
    Wd.
    Ht.
    Material
    Each
    33/64", 17/32", 35/64", 9/16", 37/64", 19/32", 39/64", 5/8"0.5156", 0.5313", 0.5469", 0.5625", 0.5781", 0.5938", 0.6094", 0.6250"5 1/2"1 1/8"1 1/8"Steel9550T112000000

    High-Speed Steel Drill Bits for Plastic

    The precision-ground, 60° point penetrates gradually to prevent cracking and chipping. It also reduces heat that can deform the material. Use these bits for drilling into acrylic, laminate, and other plastics. They're made of wear-resistant high-speed steel.
    Jobbers' LengthAbout Jobbers' Length
    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits for Plastic, Jobbers' Length.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Point
    Angle
    Drill Bit
    Point Type
    Each
    Uncoated
    33/64"
    		0.5156"
    		6 5/8"2.12"Round
    		1/2"60°Standard
    		27465A69000000
     

    Depth-Limiting Drill Stops

    Image of ProductInUse. Front orientation. Drill Stops.
    Ensure identical hole depths every time. Position the collar on your bit and tighten the set screw.
    For Drill
    Bit Size
    For Drill Bit Size
    Decimal Equiv.
    Overall
    Lg.
    OD
    Hex Key Size
    for Set Screw
    Material
    Each
    For Inch Drill Bits
    33/64"0.5156"1"1"1/8"Steel8865A237000000
     

    Tapping Threaded Insert Assortments for Soft Metal

    Image of Product. Front orientation. Threaded Inserts. Tapping Threaded Insert Assortments for Soft Metal.
    Cut a variety of thread sizes into aluminum and other soft metal—no taps required. These inserts cut their own threads and lock into material, so they won’t budge when you install or remove a screw. To install inserts with a wrench, thread an insert and two hex nuts onto a bolt. Then, grip and turn the top nut to drive into a drilled hole. If you need to add a lot of threaded connections quickly, use an installation tool (not included) with a ratchet wrench or drill press. These inserts are comparable to Tap-Lok inserts.
    Zinc-Plated Steel—A step up from plain steel, the plating withstands occasional exposure to moisture.
    No. of Inserts
    Included
    Includes
    Drill Bit Size
    For Max. Hole Dia.
    Each
    Zinc-Plated Steel
    40Drill Bits
    M6x1.0 mm Thread x 12 mm Installed Lg. (10 Each)
    M8x1.25 mm Thread x 14 mm Installed Lg. (10 Each)
    M10x1.5 mm Thread x 18 mm Installed Lg. (10 Each)
    M12x1.75 mm Thread x 22 mm Installed Lg. (10 Each)    		7/16"
    33/64"
    L
    U
    		0.290"
    0.368"
    0.438"
    0.516"    		93491A1400000000
    501/2"-13 Thread x 0.945" Installed Lg. (10 each)
    1/4"-20 Thread x 0.472" Installed Lg. (10 Each)
    3/8"-16 Thread x 0.709" Installed Lg. (10 Each)
    5/16"-18 Thread x 0.551" Installed Lg. (10 Each)
    7/16"-14 Thread x 0.866" Installed Lg. (10 Each)
    Drill Bits    		7/16"
    33/64"
    19/32"
    L
    U
    		0.290"
    0.368"
    0.438"
    0.516"
    0.594"    		93491A130000000
     

    Helical Threaded Insert Assortments with Installation Tools

    Image of Product. Front orientation. Threaded Inserts. Helical Threaded Insert Assortments with Installation Tools.
    Repair damaged threads or create new ones. These convenient assortments include helical inserts, an installation tool for each thread size, a drill bit, and a tap. The inserts are also known as Heli-Coil inserts.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    No. of Inserts
    Included
    Includes
    Thread
    Spacing
    Drill Bit Size
    For Max. Hole Dia.
    Each
    Pronged
     
    18-8 Stainless Steel
    181/2"-20 Thread × 1" Installed Lg. (6 Each)
    1/2"-20 Thread × 1/2" Installed Lg. (6 Each)
    1/2"-20 Thread × 3/4" Installed Lg. (6 Each)
    Drill Bit
    Installation Tool
    Prong Break-Off Tool
    Through-Hole Tap    		Fine
    		33/64"
    		0.516"91732A9390000000
    601/2"-20 Thread × 3/4" Installed Lg. (6 Each)
    1/4"-28 Thread × 3/8" Installed Lg. (12 Each)
    3/8"-24 Thread × 0.562" Installed Lg. (12 Each)
    5/16"-24 Thread × 0.469" Installed Lg. (12 Each)
    7/16"-20 Thread × 0.656" Installed Lg. (6 Each)
    10-32 Thread × 0.285" Installed Lg. (12 Each)
    Drill Bits
    Installation Tools
    Through-Hole Taps    		Fine
    		13/64"
    17/64"
    21/64"
    25/64"
    29/64"
    33/64"
    		0.203"
    0.266"
    0.328"
    0.391"
    0.453"
    0.516"    		90285A124000000
     

    Quick-Change Hex Shank Drill Taps for Drills and Screwdrivers

    Image of Product. Front orientation. Drill Taps. Quick-Change Hex Shank Drill Taps for Drills and Screwdrivers.
    Save time when you need to change drill taps frequently. The grooved shank snaps directly into drills, power screwdrivers, and other tools that accept a 1/4" hex shank. However, they’re not rated for impact drivers. With a drill bit point to drive into the workpiece, these taps can drill and tap holes in a single step. They’re made of high-speed steel and are for use on most metal and plastic.
    Their spiral flutes keep chips clear by drawing them back toward the tap and out of the hole. All have a plug chamfer with 3-5 chamfered cutting threads, so they’re suitable for start-to-finish tapping.
    Uncoated High-Speed Steel—Uncoated taps are strong enough for most tapping jobs but have the shortest tool life.
    Titanium Nitride (TiN)-Coated High-Speed Steel—Titanium Nitride (TiN) coated taps resist heat and wear better than uncoated taps, letting them last up to twice as long.
    Thread
    Drill Bit
    Plug Chamfer
    Size
    Lg.
    Overall
    Lg.
    Size
    Decimal Size
    Equiv.
    Point
    Angle
    Flute
    Type
    No. of
    Flutes
    Thread
    Type
    Pitch Dia.
    Limit
    Hex Shank
    Size
    Each
    Uncoated High-Speed Steel
    9/16"-18
    		1 5/8"5 1/2"33/64"
    		0.509"118°Spiral4UNF
    		H31/4"3464A65000000
     
    Titanium Nitride (TiN)-Coated High-Speed Steel
    9/16"-18
    		1 5/8"5 1/2"33/64"
    		0.509"118°Spiral4UNF
    		H31/4"3464A13500000
     

    Tight-Tolerance Water-Hardening W1 Tool Steel Rods

    Image of Product. Front orientation. Steel. Tight-Tolerance Water-Hardening W1 Tool Steel Rods.
    Ready for turning in your lathe, these rods are precision ground and held to strict diameter and straightness tolerances. Also known as drill rod. With far less alloy content than other tool steel, W1 is the most machinable we offer. These rods are often used to make hammers, files, and reamers—tools that don't require the dimensional stability of A2 or O1. These rods are also decarb-free, which means any surface flaws created during the manufacturing process have been removed. This makes them even more machinable and leads to better results from heat treating or finishing. Heat treat the surface for extra wear resistance. Or, quench this steel in water to boost its hardness and strength, giving it a sharper, more durable edge for small tools.
    Material Certificate Icon
    Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
    Dia.
    Dia. Tolerance
    Drill Bit
    Size
    Fabrication
    Heat
    Treatment
    Yield Strength,
    psi
    Mechanical
    Finish
    Hardness
    Max. Hardness After
    Heat Treatment
    Specs.
    Met
    1 ft.
    Long
    3 ft.
    Long
    6 ft.
    Long
    0.5156"-0.001" to 0.001"33/64"
    		Hot RolledAnnealed50,000Precision GroundRockwell B95 (Medium)Rockwell C65ASTM A6868890K200000000000000000

    Helical Threaded Inserts with Installation Tools

    Image of Product. Drill Bit, Installation Tool and Through-Hole Tap. Front orientation. Threaded Inserts. Helical Threaded Inserts with Installation Tools, Pronged, Drill Bit, Through-Hole Tap, Installation Tool.

    Drill Bit, Installation Tool

    and Through-Hole Tap

    Quickly restore stripped threads—these inserts come with through-hole taps and installation tools. The tough coils on these inserts expand once installed to anchor in a tapped hole.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Thread
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Inserts
    Included
    Includes
    Each
    Pronged
     
    18-8 Stainless Steel
    1/2"-13
    		0.500"33/64"
    		0.531"10Drill Bit
    Installation Tool
    Through-Hole Tap    		91732A580000000
    1/2"-13
    		0.750"33/64"
    		0.531"5Drill Bit
    Installation Tool
    Through-Hole Tap    		91732A93800000
    1/2"-13
    		1"33/64"
    		0.531"5Drill Bit
    Installation Tool
    Through-Hole Tap    		91732A59000000
    1/2"-13
    		1.250"33/64"
    		0.531"5Drill Bit
    Installation Tool
    Through-Hole Tap    		98356A144000000
    1/2"-13
    		1.500"33/64"
    		0.531"5Drill Bit
    Installation Tool
    Through-Hole Tap    		98356A145000000
    1/2"-20
    		0.500"33/64"
    		0.531"10Drill Bit
    Installation Tool
    Through-Hole Tap    		98356A146000000
    1/2"-20
    		0.750"33/64"
    		0.516"5Drill Bit
    Installation Tool
    Through-Hole Tap    		91732A94000000
    1/2"-20
    		1"33/64"
    		0.531"5Drill Bit
    Installation Tool
    Through-Hole Tap    		98356A147000000
     

    Helical Threaded Inserts for Pipe Threads with Installation Tools

    Image of Product. Front orientation. Threaded Inserts. Helical Threaded Inserts for Pipe Threads with Installation Tools.
    Fix stripped pipe threads fast—these inserts come with drill bits, through-hole taps, and installation tools. Also known as Heli-Coil inserts.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Pipe
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Inserts
    Included
    Includes
    Each
    Pronged NPT Thread
     
    18-8 Stainless Steel
    1/4
    		0.394"33/64"
    		0.516"12Drill Bit
    Installation Tool
    Through-Hole Tap    		91733A4220000000
     
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