McMaster-Carr logo
    Filter by
    System of Measurement
    Reamer Diameter
    Attribute Image
    Flute Type
    Spiral Direction
    Shank Type
    Reamer Operation
    Sold As
    Flute Length
    Attribute Image
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Number of Flutes
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Overall Length
    Attribute Image
    Hex Shank Size
    Performance
    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)
    2 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.
    Hex Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers for Hole Alignment, Hex Shank, Helix Flute.

    Helix Flute

    The shank fits hex impact sockets, so you can use an impact wrench to both ream the hole and install a fastener.
    Helix Flute—Prevent clogging when removing excess material with helix flutes. They also leave a smoother finish than straight flutes.
    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., mm
    Reamer Dia.
    (A)
    Reamer Dia.
    (B), mm
    Material
    Hex Shank
    Size, mm
    Flute
    Overall
    Spiral
    Direction
    Cutting Dia.
    Tolerance, mm
    Performance
    For Use On
    Each
    Helix Flute
     
    Metric
    28.0000 mm21.5000High-Speed Steel41127178Left Hand0 to 0.254Strong HoldAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel3239A2190000000
     

    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.

    Straight 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.
    High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.
    Lg., mm
    Reamer
    Dia.
    Material
    Flute
    Overall
    No. of
    Flutes
    Cutting Dia. Tolerance,
    mm
    For Use On
    Each
    Straight Flute
     
    Metric
    21.5000 mmHigh-Speed Steel66.725480.0025 to 0.01Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel8851A75000000
     
    back to top