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    64 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.
    Image of Product. Front orientation. Drill Bits. High-Speed Steel Drill Bits, Maintenance Length, 3-Flat Shank, Round Shank.

    Jobbers' Length

    Round Shank

    Maintenance Length

    Round Shank

    3-Flat Shank

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

    Standard

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

    Split

    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.
    Maintenance Length—Shorter than jobbers' length, these bits are more rigid for less wobble when drilling hard material. Also known as mechanics’ 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.
    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 and titanium.
    Gold Oxide—Like black oxide, this finish adds wear resistance and reduces friction for improved chip flow. Because it’s less prone to flaking off, it offers better rust protection when bits aren't in use.
    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
    Each
    Package
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Pkg.
    Qty.
    Pkg.
    Jobbers' Length
     
    Black Oxide
    19/64"
    0.2969"
    4 3/8"2.61"Round
    19/64"Split
    2901A1270000062901A529000000
    M
    0.295"
    4 3/8"2.62"Round
    0.295"Split
    2901A156000062901A54700000
    N
    0.302"
    4 3/8"2.61"Round
    0.302"Split
    2901A157000062901A54800000
     
    Titanium Nitride (TiN) Coated
    19/64"
    0.2969"
    4 3/8"2.61"Round
    19/64"Split
    29115A72700000629115A82700000
    M
    0.295"
    4 3/8"2.62"Round
    0.295"Split
    3199A3400000———0
    N
    0.302"
    4 3/8"2.61"Round
    0.302"Split
    3199A3500000———0
     
    Titanium Aluminum Nitride (TiAlN) Coated
    19/64"
    0.2969"
    4 3/8"2.61"Round
    19/64"Split
    3202A6100000———0
    M
    0.295"
    4 3/8"2.62"Round
    0.295"Split
    3180A3400000———0
    N
    0.302"
    4 3/8"2.61"Round
    0.302"Split
    3180A3500000———0
     
    Uncoated
    19/64"
    0.2969"
    4 3/8"2.61"Round
    19/64"Standard
    8870A31000068870A13100000
    M
    0.295"
    4 3/8"2.62"Round
    0.295"Standard
    30595A440000———0
    N
    0.302"
    4 3/8"2.61"Round
    0.302"Standard
    30595A450000———0
     
    Maintenance Length
     
    Gold Oxide
    25/64"
    0.3906"
    4 3/8"2.62"Round/3-Flat
    25/64"Split
    87755A4400000687755A2400000
    13/32"
    0.4063"
    4 3/8"2.68"Round/3-Flat
    13/32"Split
    87755A4500000687755A2500000
     

    Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    Image of Product. Front orientation. Drill Bits. Cobalt Steel Drill Bits, Jobbers' Length, Hex Shank.

    Jobbers' Length

    Hex Shank

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

    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.
    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
    19/64"
    0.2969"
    4 3/8"3.06"Round
    19/64"Split
    27995A527000000
    M
    0.295"
    4 3/8"3.06"Round
    0.295"Split
    27995A85200000
    N
    0.302"
    4 3/8"3.06"Round
    0.302"Split
    27995A85300000
     
    Uncoated
    19/64"
    0.2969"
    4 3/8"2.11"Hex
    19/64"Split
    4909N1800000
    19/64"
    0.2969"
    4 3/8"2.6"Round
    19/64"Split
    3069A2800000
    M
    0.295"
    4 3/8"2.62"Round
    0.295"Split
    3069A6400000
    N
    0.302"
    4 3/8"2.61"Round
    0.302"Split
    3069A6500000
     

    Carbide-Tipped Drill Bits for Masonry and Concrete

    Crush rather than cut material so bits don’t jam or overheat while drilling masonry and concrete. The ultra-hard carbide tip breaks masonry into pieces and the widely spaced flutes channel them out of the hole. These bits stay sharp, resisting wear and heat that will dull or break other bits.
    SDS-Plus Shank for Hammer and Rotary Drilling
    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits for Masonry and Concrete, SDS-Plus Shank for Hammer and Rotary Drilling.
    Image of Specification. SDS-Plus Shank. Front orientation. SDS Plus Shank.

    SDS-Plus

    Shank

    The slotted shank fits SDS-Plus-drive rotary hammers, which rotate and hammer bits simultaneously to penetrate material. Also known as percussion or impact bits.
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Specs. Met
    Each
    Uncoated
     
    Standard Point
    3/16"
    0.1875"
    4 3/8"2"ANSI B212.158948A4900000
    1/4"
    0.25"
    4 3/8"2"ANSI B212.158948A620000
     

    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
    19/64"
    0.2969"
    4 3/8"3.06"Round
    19/64"60°Standard
    27465A58000000
    3/8"
    0.375"
    4 3/8"2.25"Round
    1/4"60°Standard
    27465A8600000
    M
    0.295"
    4 3/8"2.25"Round
    0.295"60°Standard
    27465A22400000
    N
    0.302"
    4 3/8"2.25"Round
    0.302"60°Standard
    27465A22500000
     

    Pipe and Conduit Drill Taps

    Image of Product. Front orientation. Drill Taps. Pipe and Conduit Drill Taps.
    Drill and thread holes for pipe and conduit without switching tools. Made of uncoated high-speed steel, these tools are for use on most metal and plastic. Their right-hand spiral flutes keep chips clear by drawing them back toward the tap and out of the hole. With a square shank, they're compatible with tap wrenches and tap holders for drill presses and milling machines. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping of through holes.
    Drill Bit
    Plug Chamfer
    Pipe
    Size
    Threads
    per In.
    Thread
    Lg.
    Overall
    Lg.
    Size
    Decimal Size
    Equiv.
    Point
    Angle
    Flute
    Type
    No. of
    Flutes
    Thread
    Type
    Each
    Uncoated High-Speed Steel
    1/2
    141 3/8"4 3/8"45/64"
    0.7031"118°Spiral4NPTF
    2655A250000000
     

    Carbide-Tipped Drill Bits

    Image of Product. Front orientation. Drill Bits. Carbide-Tipped Drill Bits, Jobbers' Length, Round Shank.

    Jobbers' Length

    Round Shank

    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

    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.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Uncoated
    19/64"
    0.2969"
    4 3/8"2.6"Round
    19/64"Standard
    2940A25000000
    19/64"
    0.2969"
    4 3/8"2.6"Round
    19/64"Split
    31575A3400000
    M
    0.295"
    4 3/8"2.6"Round
    0.295"Standard
    2940A52300000
    M
    0.295"
    4 3/8"2.6"Round
    0.295"Split
    31575A52400000
    N
    0.302"
    4 3/8"2.6"Round
    0.302"Standard
    2940A52400000
    N
    0.302"
    4 3/8"2.6"Round
    0.302"Split
    31575A52500000
     

    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.

    Standard

    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
    25/64"
    0.3906"
    4 3/8"2.63"Reduced Round
    1/4"Standard
    3038A19000000
     

    Left-Hand Cobalt Steel Drill Bits

    Image of Product. Side1 orientation. Drill Bits. Left-Hand Cobalt Steel Drill Bits, Maintenance Length, Round Shank.

    Maintenance Length

    Round Shank

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

    Split

    The flutes spiral in the opposite direction of other bits and stay sharp longer than high-speed steel. They’re primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute bits.
    Maintenance Length—Shorter than jobbers' length, these bits are more rigid for less wobble when drilling hard material. Also known as mechanics’ bits.
    Uncoated—Polished to eject chips, these are also known as bright finish bits.
    Shank
    Each
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    1-5
    6-Up
    Maintenance Length
     
    Uncoated
    13/32"
    0.4063"
    4 3/8"2.14"Round
    13/32"Split
    3474A24000000000000
     

    Left-Hand High-Speed Steel Drill Bits

    Image of Product. Side1 orientation. Drill Bits. Left-Hand High-Speed Steel Drill Bits, Jobbers' Length, Round Shank.
    Image of Specification. Split. Front orientation. Contains Border. Split Point. For Metal.

    Jobbers' Length

    Round Shank

    Split

    With flutes that spiral in the opposite direction of other bits, these are primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute 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.
    Gold Oxide—Like black oxide, this finish adds wear resistance and reduces friction for improved chip flow. Because it’s less prone to flaking off, it offers better rust protection when bits aren't in use.
    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
     
    Gold Oxide
    19/64"
    0.2969"
    4 3/8"2.94"Round
    19/64"Split
    88055A49000000
     
    Uncoated
    19/64"
    0.2969"
    4 3/8"2.46"Round
    19/64"Split
    2876A2910000
     

    Chip-Clearing High-Speed Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Chip-Clearing High-Speed Steel Drill Bits, Jobbers' Length, High Helix Flute, Round Shank.
    Image of Product. Front orientation. Drill Bits. Chip-Clearing High-Speed Steel Drill Bits, Jobbers' Length, Parabolic Flute, Round Shank.

    Jobbers' Length

    High Helix Flute

    Round Shank

    Jobbers' Length

    Parabolic Flute

    Round Shank

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

    Standard

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

    Split

    With flutes that lift chips out of the hole, you don't have to stop drilling to clear these bits manually. They improve coolant flow to dissipate heat and prevent clogs that can damage the bit and ruin the hole. High-speed steel is good for general purpose drilling in most metals.
    High Helix Flute—Less aggressive than parabolic flutes for cleaner cuts in soft metals.
    Parabolic Flute—A U-shaped groove on the flutes cuts faster and clears chips more quickly than high-helix bits, so these are better for drilling deeper holes.
    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.
    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.
    Flute
    Type
    Type
    Size
    Drill Bit
    Point Type
    Each
    Jobbers' Length
     
    Black Oxide
    19/64"
    0.2969"
    4 3/8"2.46"ParabolicRound
    19/64"Split
    29925A27000000
     
    Titanium Nitride (TiN) Coated
    19/64"
    0.2969"
    4 3/8"2.46"ParabolicRound
    19/64"Split
    29925A6700000
     
    Uncoated
    19/64"
    0.2969"
    4 3/8"2.46"ParabolicRound
    19/64"Split
    2754A5700000
    19/64"
    0.2969"
    4 3/8"2.62"High HelixRound
    19/64"Standard
    2912A1270000
     

    Short-Flute Cobalt Steel Drill Bits

    Image of Product. Front orientation. Drill Bits. Short-Flute 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

    These bits combine the toughness and wear resistance of cobalt with short flutes for rigidity. The shallow drilling depth makes them less likely to wobble than other bits of the same length, so they stay centered and drill straighter. Cobalt lasts at least twice as long as high-speed steel. It can also run up to 25% faster at higher temperatures without damaging the bit on hard materials such as nickel.
    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
    Each
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    1-4
    5-Up
    Jobbers' Length
     
    Black Oxide
    19/64"
    0.2969"
    4 3/8"1.12"Round
    19/64"Split
    3146A128000000000000
     

    Chip-Clearing High-Speed Steel Drill Bits for Aluminum, Brass, and Bronze

    Image of Product. Front orientation. Drill Bits. Chip-Clearing High-Speed Steel Drill Bits for Aluminum, Brass, and Bronze, Jobbers' Length, Low Helix Flute, Round Shank.

    Jobbers' Length

    Low Helix Flute

    Round Shank

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

    Standard

    Designed for soft metals that can gum up other drill bits, wide flutes lift chips out of the hole. This prevents clogs that can weaken and damage the bit and ruin the hole. Also known as slow spiral bits, these are made of versatile high-speed steel.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    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
    Each
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Flute
    Type
    Type
    Size
    Drill Bit
    Point Type
    1-11
    12-Up
    Jobbers' Length
     
    Uncoated
    19/64"
    0.2969"
    4 3/8"2.46"Low HelixRound
    19/64"Standard
    2928A227000000000000
     

    Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods

    Image of Product. Front orientation. Steel. Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods.
    These rods, also known as drill blanks, have an undersized diameter for machining your own drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.
    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
    Lg.
    Yield
    Strength
    Hardness
    Mechanical
    Finish
    Each
    0.295"-0.0002" to 0"M
    4 3/8"Not RatedRockwell C60 (Extra Hard)Precision Ground3009A19500000
    0.2969"-0.0002" to 0"19/64"
    4 3/8"Not RatedRockwell C60 (Extra Hard)Precision Ground3009A1310000
    0.302"-0.0002" to 0"N
    4 3/8"Not RatedRockwell C60 (Extra Hard)Precision Ground3009A1960000
    7.4 mm-0.005 mm to 0 mm7.4 mm
    4 3/8"Not RatedRockwell C60 (Extra Hard)Precision Ground2900A3520000
    7.5 mm-0.005 mm to 0 mm7.5 mm
    4 3/8"Not RatedRockwell C60 (Extra Hard)Precision Ground2900A3530000
    7.6 mm-0.005 mm to 0 mm7.6 mm
    4 3/8"Not RatedRockwell C60 (Extra Hard)Precision Ground2900A3540000

    Round-Shank Reamer Drill Bits for Taper-Pin Holes

    Image of Product. Front orientation. Contains Annotated. Reamer Drill Bits. Round-Shank Reamer Drill Bits for Taper-Pin Holes.
    Drill and ream holes for taper pins with the same tool. These tools have chip breakers on the cutting edge.
    Reamer
    Dia.
    Lg.
    For Taper
    Pin No.
    (A)
    (B)
    Flute
    Overall
    No. of
    Flutes
    Flute
    Type
    Spiral
    Direction
    Rate of
    Taper
    Point
    Angle
    For Use On
    Each
    High-Speed Steel
    20.1950"0.1325"3"4 3/8"2SpiralRight Hand1:48118°Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel8831A17000000
     

    Impact Square Drive Size Adapters

    Image of Product. Front orientation. Socket Adapters. Impact Square Drive Size Adapters, Hole Socket Retainer.

    Hole Socket Retainer

    Convert from one square drive size to another. The female side of the adapter attaches to your wrench; the male side to your socket. These adapters are made to withstand the high torque and force of impact tools.
    1 1/2" Square Drive—3/4", 1", and 1 1/2" square drive size adapters require a locking retainer on the female end. Use with an impact wrench that has a pin-style socket retainer, or use a socket retaining ring with tools that have a hole- or hole-and-ring style socket retainer.
    Socket Adapters
    Retaining Rings
    Square Drive Size (Gender)
    Overall
    Lg.
    Compatible Retaining
    Ring ID
    Material
    Socket Retainer
    Style
    Each
    Each
    1 1/2" (Female) × 2 1/2" (Male)4 3/8"2 7/8"Black-Oxide SteelHole53055A10900000007196A7500000
     

    Tight-Tolerance Ultra-Heat-Resistant M42 High-Speed Tool Steel Rods

    Image of Product. Front orientation. Steel. Tight-Tolerance Ultra-Heat-Resistant M42 High-Speed Tool Steel Rods.
    Machine saw blades, end mills, and other cutting tools that stay hard and sharp at top speeds and temperatures. M42 runs faster and hotter than other grades of high-speed tool steel, so it slices through material as tough as titanium without softening or wearing down. Precision ground and held to a strict tightness tolerance, this steel is all set to turn in your lathe. Also known as cobalt steel.
    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
    Lg.
    Yield
    Strength
    Hardness
    Mechanical
    Finish
    Each
    19/64"-0.0002" to 0"4 3/8"Not RatedRockwell C65 (Extra Hard)Precision Ground8813A56000000

    Oversized Hardened Multipurpose M2 High-Speed Tool Steel Rods

    Image of Product. Front orientation. Steel. Oversized Hardened Multipurpose M2 High-Speed Tool Steel Rods.
    Also known as reamer blanks, these rods have an oversized diameter that allows for finishing to your exact requirements. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.
    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
    Reamer
    Size
    Lg.
    Fabrication
    Yield
    Strength
    Hardness
    Mechanical
    Finish
    Each
    0.295"0" to 0.0002"M4 3/8"Hot RolledNot RatedRockwell C60 (Extra Hard)Precision Ground3023A29500000
    0.2969"0" to 0.0002"19/64"4 3/8"Hot RolledNot RatedRockwell C60 (Extra Hard)Precision Ground3023A2310000
    0.302"0" to 0.0002"N4 3/8"Hot RolledNot RatedRockwell C60 (Extra Hard)Precision Ground3023A2960000
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