McMaster-Carr logo
    Filter by
    System of Measurement
    Reamer Diameter
    Attribute Image
    Reamer Fractional Size
    Flute Type
    Shank Diameter
    Attribute Image
    Number of Flutes
    Sold As
    Reamer Operation
    Spiral Direction
    Number of Flats
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Square Shank Size
    Machine Taper Number
    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)
    19 Products

    Reamer Type

    Shank Type

    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.
    Short Length—About 2" shorter than standard-length reamers of similar thicknesses, these give you room to maneuver in tight spaces.
    Lg.
    Reamer Dia. (A)
    Reamer Dia.
    (B)
    Material
    Flute
    Overall
    Spiral
    Direction
    Cutting Dia.
    Tolerance
    Performance
    Lg.
    Class
    For Use On
    Each
    Spiral Flute
     
    Inch
    0.6875" (11/16")0.3594"High-Speed Steel4 7/8"7"Left Hand0" to 0.005"Depth Limiting—Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel0000000000000
    0.6875" (11/16")0.3750"High-Speed Steel2 1/16"4 5/16"Left Hand0" to 0.005"—Short
    		Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel000000000000
    0.6875" (11/16")0.3750"High-Speed Steel4 1/4"6 3/8"Left Hand0" to 0.01"——Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel000000000000
     
    Hex Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers for Hole Alignment, Hex Shank, Spiral Flute.

    Spiral Flute

    The shank fits hex impact sockets, so you can use an impact wrench to both ream the hole and install a fastener.
    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.
    Strong Hold—Magnets on the shank’s end keep these reamers from accidentally falling out of your tool.
    Lg.
    Reamer Dia. (A)
    Reamer Dia.
    (B)
    Material
    Hex Shank
    Size
    Flute
    Overall
    Spiral
    Direction
    Cutting Dia.
    Tolerance
    Performance
    For Use On
    Each
    Spiral Flute
     
    Inch
    0.6875" (11/16")0.3750"High-Speed Steel1 1/16"4 1/2"6 3/8"Left Hand0" to 0.01"—Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel0000000000000
    0.6875" (11/16")0.3750"High-Speed Steel1 1/16"4 1/2"6 3/8"Left Hand0" to 0.01"Strong HoldAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel0000000000000
    0.6875" (11/16")0.3750"High-Speed Steel1 1/16"7 1/8"9 1/4"Left Hand0" to 0.01"Strong HoldAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel00000000000000
    0.6875" (11/16")0.3906"High-Speed Steel1 1/16"7 1/8"9 1/4"Left Hand0" to 0.01"—Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel0000000000000
    1.0000" (1")0.6875"High-Speed Steel1 7/16"7 3/8"9 3/8"Left Hand0" to 0.01"Strong HoldAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel00000000000000
    1.1875" (1 3/16")0.6875"High-Speed Steel1 13/16"5"7"Left Hand0" to 0.01"—Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel0000000000000
    1.1875" (1 3/16")0.6875"High-Speed Steel1 13/16"5"7"Left Hand0" to 0.01"Strong HoldAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel0000000000000
     
    Morse Taper Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers for Hole Alignment, Morse Taper Shank, Spiral Flute.

    Spiral Flute

    These reamers work with machine tools that have a Morse taper-spindle hole, such as a drill press or lathe.
    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. (A)
    Reamer Dia.
    (B)
    Material
    Machine
    Taper No.
    Flute
    Overall
    Spiral
    Direction
    Cutting Dia.
    Tolerance
    For Use On
    Each
    Spiral Flute
     
    Inch
    0.6875" (11/16")0.3750"High-Speed SteelMorse 34 1/2"8 13/16"Left Hand0" to 0.01"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel00000000000000
    1.0000" (1")0.6875"High-Speed SteelMorse 37 3/8"12"Left Hand0" to 0.01"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel0000000000000
     

    Reamers

    Finish holes to precise inch, metric, wire gauge, or letter sizes with these reamers.
    Round Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers, Round Shank, Straight Flute.
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers, Round Shank, Spiral Flute.

    Straight 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.
    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.
    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-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.
    Lg.
    Reamer Dia.
    Material
    Flute
    Overall
    No. of
    Flutes
    Spiral
    Direction
    Cutting Dia.
    Tolerance
    For Use On
    Each
    Straight Flute
     
    Inch
    0.6875" (11/16")High-Speed Steel2 1/4"9"8—0" to 0.0003"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel00000000000000
    0.6875" (11/16")Cobalt Steel2 1/4"9"8—0" to 0.0004"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel000000000000
    0.6875" (11/16")Carbide-Tipped Tool Steel2 1/4"9"6—0" to 0.0003"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel000000000000
     
    Spiral Flute
     
    Inch
    0.6875" (11/16")High-Speed Steel2 1/4"9"8Right Hand0.0001" to 0.0004"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel000000000000
     
    Expandable Flutes, Round Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers, Expandable Flutes, Round Shank, Straight Flute.

    Straight Flute

    Unlike standard reamers, which are unusable once they become worn, these can be returned to their original size for finishing holes. After the reamer is worn down, tighten the set screw to expand the diameter, grind the reamer to its original size, and get back to work.
    These are not designed for producing holes larger than the listed diameter or for producing holes of various sizes. The set screw should not be loosened.
    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.
    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.
    Lg.
    Reamer Dia.
    Material
    Flute
    Overall
    No. of
    Flutes
    Cutting Dia.
    Tolerance
    Recommended Expansion
    Limit
    For Use On
    Each
    Straight Flute
     
    Inch
    0.6875" (11/16")Carbide-Tipped Tool Steel1 1/4"9"60" to 0.0003"0.010"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel00000000000000
     
    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
    0.6875" (11/16")High-Speed Steel0.515"3 7/8"7 3/4"8—0.0001" to 0.0004"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel00000000000000
     
    Spiral Flute
     
    Inch
    0.6875" (11/16")High-Speed Steel0.515"3 7/8"7 3/4"8Left Hand0.0001" to 0.0004"Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel0000000000000
     
    back to top