McMaster-Carr logo
    Filter by
    System of Measurement
    Reamer Diameter
    Attribute Image
    Flute Type
    Number of Flutes
    Spiral Direction
    Number of Pieces
    Reamer Operation
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Length Class
    Industrial Info Snippet
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    24 Products

    Reamers

    Finish holes to precise inch, metric, wire gauge, or letter sizes with these reamers.
    Round Shank
    These reamers fit in the chuck of drill presses, turret lathes, and other machine and power tools, making them the most common shank type.
    Straight Flute—The most common flute style, these reamers are suitable for a wide range of applications, but not recommended for holes with a keyway or other breaks in the surface.
    Spiral Flute—Since these reamers clear chips better than straight flutes, they leave holes with a smoother finish. They're better for holes with breaks in the surface, such as a keyway, because they cut continuously across the breaks instead of moving in and out.
    High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.
    Titanium Nitride (TiN)-Coated High-Speed Steel—Coated to create less friction than uncoated high-speed steel reamers, these run faster and last twice as long.
    Cobalt Steel—With better heat and wear resistance than high-speed steel, these reamers run up to 25% faster, last longer, and perform better on hard materials, such as cast iron, hardened steel, titanium, and stainless steel.
    Carbide—For the highest level of accuracy when cutting hard materials, these are our hardest, strongest, and most wear-resistant reamers. They're used on materials such as iron, hardened steel, steel alloys, and plastic. Their hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the reamer from breaking.
    Carbide-Tipped Tool Steel—Since these reamers retain a sharper, harder edge at higher temperatures than high-speed steel and cobalt steel, they can be used on hard materials, such as iron, hardened steel, and steel alloys. They aren't as brittle as solid carbide reamers, so they can be used in less rigid setups, such as a hand-held drill.
    Right-Hand Spiral—These reamers pull chips upward as they cut, so they're often used in blind holes.
    Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.
    Lg.
    Reamer Dia.
    Material
    Flute
    Overall
    No. of
    Flutes
    Spiral
    Direction
    Cutting Dia.
    Tolerance
    For Use On
    Each
    Straight Flute
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers, Round Shank, Straight Flute.
     
    Inch
    0.1875" (3/16")High-Speed Steel1 1/8"4 1/2"6—0" to 0.0002"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel2995A63000000
    0.1875" (3/16")Cobalt Steel1 1/8"4 1/2"6—0" to 0.0002"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel2975A2300000
    0.1875" (3/16")Carbide7/8"2 3/4"4—0" to 0.0002"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3026A2300000
    0.1875" (3/16")Carbide-Tipped Tool Steel1 1/8"4 1/2"4—0" to 0.0003"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3025A1300000
     
    Spiral Flute
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers, Round Shank, Spiral Flute.
     
    Inch
    0.1875" (3/16")High-Speed Steel1 1/8"4 1/2"6Right Hand0" to 0.0002"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3106A1900000
    0.1875" (3/16")High-Speed Steel1 1/8"4 1/2"6Left Hand0" to 0.0002"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3106A7300000
    0.1875" (3/16")Titanium Nitride (TiN)-Coated High-Speed Steel1 1/8"4 1/2"6Right Hand0" to 0.0002"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel28435A16200000
     
    Square Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers, Square Shank, Straight Flute.

    Straight Flute

    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers, Square Shank, Spiral Flute.

    Spiral Flute

    Turn these reamers by hand with an adjustable wrench or straight-handle tap wrench (sold separately).
    Straight Flute—The most common flute style, these reamers are suitable for a wide range of applications, but not recommended for holes with a keyway or other breaks in the surface.
    Spiral Flute—Since these reamers clear chips better than straight flutes, they leave holes with a smoother finish. They're better for holes with breaks in the surface, such as a keyway, because they cut continuously across the breaks instead of moving in and out.
    High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.
    Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.
    Lg.
    Reamer Dia.
    Material
    Square Shank
    Size
    Flute
    Overall
    No. of
    Flutes
    Spiral
    Direction
    Cutting Dia.
    Tolerance
    For Use On
    Each
    Straight Flute
     
    Inch
    0.1875" (3/16")High-Speed Steel0.144"1 3/4"3 1/2"6—0" to 0.0002"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel2989A13000000
     
    Spiral Flute
     
    Inch
    0.1875" (3/16")High-Speed Steel0.140"1 3/4"3 1/2"6Left Hand0" to 0.0002"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel2989A8200000
     
    Threaded Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers, Threaded Shank, Straight Flute.

    Straight Flute

    These reamers fit power drills that have a 1/4"-28 threaded spindle or adapter. Using a powered hand tool can affect alignment, so these have a built-in pilot that guides the reamer into the hole and keeps it straight.
    Straight Flute—The most common flute style, these reamers are suitable for a wide range of applications, but not recommended for holes with a keyway or other breaks in the surface.
    High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.
    Lg.
    Reamer Dia.
    Pilot
    Dia.
    Material
    Flute
    Pilot
    Overall
    No. of
    Flutes
    Cutting Dia.
    Tolerance
    Pilot Cutting
    Dia. Tolerance
    For Use On
    Each
    Straight Flute
     
    Inch
    0.1875" (3/16")0.178"High-Speed Steel1 1/2"1/2"2 1/8"60" to 0.0002"-0.001" to 0"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel2585A19000000
     

    Reamer Sets

    Keep a variety of reamer sizes on hand for finishing holes.
    Round Shank
    Image of Product. Front orientation. Reamers. Reamer Sets, Round Shank.
    These reamers fit in the chuck of drill presses, turret lathes, and other machine and power tools, making them the most common shank type.
    Straight Flute—The most common flute style, these reamers are suitable for a wide range of applications, but not recommended for holes with a keyway or other breaks in the surface.
    Spiral Flute—Since these reamers clear chips better than straight flutes, they leave holes with a smoother finish. They're better for holes with breaks in the surface, such as a keyway, because they cut continuously across the breaks instead of moving in and out.
    High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.
    Right-Hand Spiral—These reamers pull chips upward as they cut, so they're often used in blind holes.
    Jobbers' Length—The same length as jobbers' drill bits, these reamers save setup time when you want to drill and ream on the same machine, such as a drill press or bench lathe.
    Sizes Included
    No. of
    Pieces
    Material
    Spiral
    Direction
    Lg.
    Class
    Container
    Type
    For Use On
    Each
    Straight Flute
     
    Inch
    1/16"-1/4" (Increments of 1/64")13High-Speed Steel—Jobbers
    		Metal CaseAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3008A10000000
    1/16"-1/2" (Increments of 1/64")29High-Speed Steel——Metal CaseAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3008A17000000
    1/16"-1/2" (Increments of 1/64")29High-Speed Steel——Wood CaseAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3008A8000000
    1/16"-1/2" (Increments of 1/64")29High-Speed Steel—Jobbers
    		Metal CaseAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3008A2000000
    1/16"-1/2" (Increments of 1/32")15High-Speed Steel——Roll-Up PouchAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3008A24000000
     
    Spiral Flute
     
    Inch
    1/16"-1/2" (Increments of 1/64")29High-Speed SteelRight Hand—Metal CaseAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3008A9000000
    1/16"-1/2" (Increments of 1/32")15High-Speed SteelRight HandJobbers
    		Metal CaseAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3008A34000000
     

    Reamers for Hole Alignment

    Enlarge holes to correct misalignment and overlap. Misaligned holes often have a narrow entry, so the tapered shape is easier to insert and makes more contact to remove the overlapping material. These are also known as bridge and car reamers.
    Round Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers for Hole Alignment, Round Shank, Spiral Flute.

    Spiral Flute

    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers for Hole Alignment, Round Shank, Spiral Flute, Depth Limiting.

    Spiral Flute

    Depth Limiting

    These reamers fit in the chuck of drill presses, turret lathes, and other machine and power tools, making them the most common shank type.
    Spiral Flute—Since these reamers clear chips better than straight flutes, they leave holes with a smoother finish. They're better for holes with breaks in the surface, such as a keyway, because they cut continuously across the breaks instead of moving in and out.
    High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.
    Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.
    Depth Limiting—A collar on the shank prevents these reamers from going too deep into material, protecting your tool's chuck from damage.
    Lg.
    Reamer Dia.
    (A)
    Reamer Dia.
    (B)
    Material
    Flute
    Overall
    Spiral
    Direction
    Cutting Dia.
    Tolerance
    Performance
    For Use On
    Each
    Spiral Flute
     
    Inch
    0.1875" (3/16")0.1250"High-Speed Steel1 3/8"3 1/2"Left Hand0" to 0.005"Depth LimitingAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel2743A51000000
    0.3125" (5/16")0.1875"High-Speed Steel2 1/2"4 5/8"Left Hand0" to 0.01"—Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3089A1200000
    0.3750" (3/8")0.1875"High-Speed Steel2 7/8"5"Left Hand0" to 0.005"Depth LimitingAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel2743A1100000
     

    Reamers for Deburring

    Smooth the inside and edges of holes with these reamers. Often used to finish holes in sheet metal or to remove burrs from the ends of cut pipe and conduit, they're also known as repairmen's reamers.
    Round Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers for Deburring, Round Shank, Spiral Flute.

    Spiral Flute

    These reamers fit in the chuck of drill presses, turret lathes, and other machine and power tools, making them the most common shank type.
    Spiral Flute—Since these reamers clear chips better than straight flutes, they leave holes with a smoother finish. They're better for holes with breaks in the surface, such as a keyway, because they cut continuously across the breaks instead of moving in and out.
    High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.
    Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.
    Lg.
    For Pipe
    Size
    Reamer Dia. (B to A)
    Material
    Flute
    Overall
    No. of
    Flutes
    Spiral
    Direction
    Cutting Dia.
    Tolerance
    For Deburring
    For Use On
    Each
    Spiral Flute
     
    Inch
    1/8 to 10.1875" to 1.2500" (3/16" to 1 1/4")High-Speed Steel3 1/32"5 3/64"10Left Hand-0.003" to 0.003"Inner Pipe Edges, Inner Tube Edges, Inner Conduit Edges, Sheet EdgesAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3017A110000000
     
    L-Handle Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers for Deburring, L-Handle Shank, Spiral Flute.

    Spiral Flute

    Turn these reamers with the long ratcheting handle, which provides more leverage than a T-handle.
    Spiral Flute—Since these reamers clear chips better than straight flutes, they leave holes with a smoother finish. They're better for holes with breaks in the surface, such as a keyway, because they cut continuously across the breaks instead of moving in and out.
    Hardened Steel—Typically more economical but less durable than high-speed steel, these are for general purpose reaming.
    Right-Hand Spiral—These reamers pull chips upward as they cut, so they're often used in blind holes.
    Lg.
    For Pipe
    Size
    Reamer Dia. (B to A)
    Material
    Flute
    Reamer
    Handle
    Ratcheting
    Handle
    No. of
    Flutes
    Spiral
    Direction
    For Deburring
    For Use On
    Each
    Spiral Flute
     
    Inch
    1/4 to 20.1875" to 2.2500" (3/16" to 2 1/4")Hardened Steel5 1/8"6 7/8"16"6Right HandInner Pipe Edges, Inner Tube Edges, Inner Conduit EdgesAluminum, Brass, Bronze, Copper, Iron, Plastic, Stainless Steel, Steel3678N110000000
     

    Round-Shank Reamer Drill Bits

    Image of Product. Front orientation. Contains Annotated. Reamer Drill Bits. Round-Shank Reamer Drill Bits.
    Drill and finish holes in a single pass with these dual-purpose tools. The tapered tip gradually pierces your material to reduce friction, and the straight flutes make clean cuts without chipping or peeling the edge of the hole. Made from solid carbide, these reamer drill bits are strong and heat resistant. The flutes stay sharp even when cutting abrasive materials such as carbon fiber, fiberglass, and graphite. Use them in drill presses or other machines—carbide is brittle, and will break if used to drill by hand.
    Dia.
    Lg.
    Reamer
    Size
    Reamer
    Shank
    Max. Drilling
    Dp.
    Flute
    Overall
    No. of
    Flutes
    Flute
    Type
    Cutting Dia.
    Tolerance
    For Use On
    Each
    Carbide
     
    Inch
    3/16"0.1875"0.187"1.06"1.063"3"4Straight0" to 0.0005"Carbon Fiber, Fiberglass, Graphite3436N150000000
     

    Press-Fit Reamer Bushings

    Image of ProductInUse. Front orientation. Drill Bushings. Press-Fit Reamer Bushings.
    Image of Product. Front orientation. Drill Bushings. Press-Fit Reamer Bushings.
    With ID tolerances sized specifically for reamers, these bushings ensure steady and precise hole finishing. Press them into a fixture plate with a manual or hydraulic press for permanent installation. Also known as headless bushings, these ANSI-type P bushings don’t need counterboring to be mounted flush. They are made of hardened, ground steel that holds its shape and resists wear, so they last for many cycles without needing to be replaced.
    For
    Reamer
    Tolerance
    ID
    OD
    Lg.
    Dia.
    Fractional
    Size
    ID
    OD
    Lg.
    Drill Bushing
    Type
    Material
    Hardness
    Each
    0.1875"5/16"3/8"0.1875"3/16"0.0005" to 0.0008"0.0013" to 0.0016"-0.01" to 0.01"PSteelRockwell C619473N23700000
    back to top