McMaster-Carr logo
    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)
    6 Products

    Reamers
    3D CAD models available

    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.
    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.
    Lg.
    Reamer
    Dia.
    Material
    Flute
    Overall
    No. of
    Flutes
    Cutting Dia.
    Tolerance
    For Use On
    Each
    Straight Flute
     
    Metric
    16.0000 mmHigh-Speed Steel57.2 mm228.6 mm80.0025 mm to 0.01 mmAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel0000000000000
    16.0000 mmCobalt Steel57.2 mm228.6 mm80 mm to 0.005 mmAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel, Tool Steel, Hardened Steel0000000000000
    16.0000 mmCarbide44.4 mm101.6 mm60 mm to 0.0003 mmAluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel000000000000000
     
    Square Shank
    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).
    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
    Specs.
    Met
    For Use On
    Each
    Spiral Flute
     
    Metric
    16.0000 mmHigh-Speed Steel12 mm87 mm175 mm8Left Hand0.008 mm to 0.015 mmDIN 206Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel00000000000000
     

    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, Helical-Spiral Flute.

    Helical-Spiral Flute

    The shank fits hex impact sockets, so you can use an impact wrench to both ream the hole and install a fastener.
    Helical-Spiral Flute—Prevent clogging when removing excess material with helical-spiral 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.
    Secure 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
    Helical-Spiral Flute
     
    Metric
    16.0000 mm7.9000 mmHigh-Speed Steel24 mm114 mm152 mmLeft Hand0 mm to 0.254 mmSecure HoldAluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel00000000000000
     

    Reamers for Taper-Pin Holes
    3D CAD models available

    Shape holes to match the profile of taper pins. After drilling a hole that matches the size of the small end of the taper pin you want to install, use these reamers to taper and finish the hole.
    Square Shank
    Image of Product. Front orientation. Contains Annotated. Reamers. Reamers for Taper-Pin Holes, Square Shank, Straight Flute.

    Straight Flute

    Turn these reamers by hand with an adjustable wrench, straight-handle tap wrench, or pin vise (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.
    High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.
    Lg.
    For Taper
    Pin No.
    Reamer Dia.
    (A)
    Reamer Dia.
    (B)
    Material
    Square Shank
    Size
    Flute
    Overall
    No. of
    Flutes
    Cutting Dia.
    Tolerance
    Rate of
    Taper
    For Use On
    Each
    Straight Flute
     
    Metric
    1216.0000 mm11.8000 mmHigh-Speed Steel11.2 mm210 mm255 mm80 mm to 0.125 mm1:50Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel000000000000000
     
    back to top