McMaster-Carr logo
    Filter by
    System of Measurement
    Reamer Diameter
    Flute Type
    Reamer Fractional Size
    Overall Length
    Material
    Number of Flutes
    Shank Type
    Flute Length
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Reamer Type
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Sold As
    Reamer Operation
    Pilot Diameter
    Shank Diameter
    Maximum Drilling Depth
    Attribute Image
    Pilot Length
    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)
    3 Products

    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.
    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.
    Lg.
    Reamer Dia.
    Material
    Flute
    Overall
    No. of
    Flutes
    Cutting Dia.
    Tolerance
    For Use On
    Each
    Straight Flute
     
    Inch
    0.2812" (9/32")Cobalt Steel1 1/2"6"60" to 0.0002"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel2975A42000000
     
    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
    0.2812" (9/32")0.270"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, Steel2585A37000000
     

    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
    9/32"0.2812"0.281"2.75"2.75"4"4Straight0" to 0.0005"Carbon Fiber, Fiberglass, Graphite3436N250000000
     
    back to top