McMaster-Carr logo
    Filter by
    Shank Type
    Reamer Operation
    Blade Shape
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Pilot Length
    Number of Blades
    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)
    155 Products

    Reamer Type

    Shank Type

    Reamers

    Finish holes to precise inch, metric, wire gauge, or letter sizes with these reamers.
    Adjustable Size, Square Shank
    Finish multiple hole sizes with one reamer by moving the adjustable blades within the diameter range. Convenient for maintenance work, these have a large diameter range and don't require powered tools. They're often used to make precise size adjustments during installation of bearings and bushings.
    Move the blades by tightening and loosening the two nuts on the reamer. To measure size, adjust blades to a known size (such as a bushing or ring), or measure across two opposite blades with a micrometer. When the blades become worn, they can be reground or replaced.
    Turn these reamers by hand with an adjustable wrench or straight-handle tap wrench (sold separately).
    Extension pilots (not included) can be used in place of the end adjustment nut to align holes that are spaced far apart.
    Straight Blade—Use these reamers in straight holes that don't have a keyway or other breaks in the surface.
    Angled Blade—These reamers are better than those with straight blades for finishing holes with breaks in the surface, such as a keyway.
    High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.
    Tool Steel—Typically more economical but less durable than high-speed steel, these are for general purpose reaming.
    Reamers
    Replacement Blades
    Optional
    Extension Pilots
    Reamer Dia.
    Material
    Square Shank
    Size
    Overall
    Lg.
    No. of
    Blades
    For Use On
    Each
    Pkg.
    Qty.
    Pkg.
    Each
    Straight Blade
    Image of Product. Front orientation. Reamers. Reamers, Adjustable Size, Square Shank, Straight Blade.
     
    Inch
    0.2500" to 0.2813" (1/4" to 9/32")High-Speed Steel0.1160"3 1/4"4Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3141A61000000043141A7100000003004A41000000
    0.2813" to 0.3125" (9/32" to 5/16")High-Speed Steel0.1250"3 5/8"4Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3141A6200000043141A720000003004A4200000
    0.3125" to 0.3438" (5/16" to 11/32")High-Speed Steel0.1560"4"4Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3141A6300000043141A730000003004A4300000
    0.3438" to 0.3750" (11/32" to 3/8")High-Speed Steel0.1560"4 1/4"4Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3141A6400000043141A740000003004A4400000
    0.3750" to 0.4063" (3/8" to 13/32")High-Speed Steel0.1710"4 1/2"4Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3141A6500000043141A750000003004A4500000
    0.4063" to 0.4375" (13/32" to 7/16")High-Speed Steel0.1870"4 3/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3141A6600000063141A760000003004A4600000
    0.4375" to 0.4688" (7/16" to 15/32")High-Speed Steel0.1870"5 1/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3141A6700000063141A770000003004A1200000
    0.4688" to 0.5313" (15/32" to 17/32")High-Speed Steel0.1870"5 5/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A1200000063141A410000003004A1200000
    0.5313" to 0.5938" (17/32" to 19/32")High-Speed Steel0.2180"5 5/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A1300000063141A420000003004A1300000
    0.5938" to 0.6563" (19/32" to 21/32")High-Speed Steel0.2810"6 5/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A1400000063141A430000003004A1500000
    0.6563" to 0.7188" (21/32" to 23/32")High-Speed Steel0.3120"6 7/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A1600000063141A440000003004A1600000
    0.7188" to 0.7813" (23/32" to 25/32")High-Speed Steel0.3430"7 1/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A1500000063141A450000003004A1700000
    0.7813" to 0.8438" (25/32" to 27/32")High-Speed Steel0.4060"7 1/2"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A1700000063141A460000003004A1800000
    0.8438" to 0.9375" (27/32" to 15/16")High-Speed Steel0.4370"8 1/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A1800000063141A470000003004A1900000
    0.9375" to 1.0625" (15/16" to 1 1/16")High-Speed Steel0.5000"9 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A2300000063141A480000003004A2100000
    1.0625" to 1.1875" (1 1/16" to 1 3/16")High-Speed Steel0.5310"10 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A2400000063141A490000003004A2300000
    1.1875" to 1.3438" (1 3/16" to 1 11/32")High-Speed Steel0.6250"11 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A2500000063141A510000003004A2500000
    1.3438" to 1.5313" (1 11/32" to 1 17/32")High-Speed Steel0.6400"12"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A2600000063141A520000003004A27000000
    1.5313" to 1.7813" (1 17/32" to 1 25/32")High-Speed Steel0.7500"14 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A2700000063141A530000003004A29000000
    1.7813" to 2.0938" (1 25/32" to 2 3/32")High-Speed Steel0.9370"16"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A2800000063141A540000003004A32000000
    2.0938" to 2.4688" (2 3/32" to 2 15/32")High-Speed Steel1.1870"18"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel3141A3100000063141A550000003004A36000000
    2.1875" to 2.5625" (2 3/16" to 2 9/16")Tool Steel
    		1.2500"18"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A4300000062987A830000003004A35000000
    2.5625" to 3.0000" (2 9/16" to 3")Tool Steel
    		1.4680"20"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A4400000062987A840000003004A38000000
     
    Angled Blade
    Image of Product. Front orientation. Reamers. Reamers, Adjustable Size, Square Shank, Angled Blade.
     
    Inch
    0.4219" to 0.4531" (27/64" to 29/64")Tool Steel
    		0.1870"5 3/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A2800000062987A68000003004A1100000
    0.4219" to 0.4688" (27/64" to 15/32")Tool Steel
    		0.1870"5 3/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A100000062987A5000003004A1100000
    0.4375" to 0.5000" (7/16" to 1/2")Tool Steel
    		0.1870"5 3/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A2900000062987A69000003004A1200000
    0.4688" to 0.5313" (15/32" to 17/32")Tool Steel
    		0.1870"5 5/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A1100000062987A51000003004A1200000
    0.5000" to 0.5625" (1/2" to 9/16")Tool Steel
    		0.2180"5 5/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A300000062987A7000003004A1300000
    0.5313" to 0.5938" (17/32" to 19/32")Tool Steel
    		0.2180"5 5/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A1200000062987A52000003004A1300000
    0.5625" to 0.6250" (9/16" to 5/8")Tool Steel
    		0.2640"5 7/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A3100000062987A71000003004A1400000
    0.5938" to 0.6563" (19/32" to 21/32")Tool Steel
    		0.2810"6 5/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A1300000062987A53000003004A1500000
    0.6250" to 0.6875" (5/8" to 11/16")Tool Steel
    		0.2810"6 5/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A3200000062987A72000003004A1500000
    0.6563" to 0.7188" (21/32" to 23/32")Tool Steel
    		0.3120"6 7/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A1400000062987A54000003004A1600000
    0.6875" to 0.7500" (11/16" to 3/4")Tool Steel
    		0.3120"6 7/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A3300000062987A73000003004A1600000
    0.7188" to 0.7813" (23/32" to 25/32")Tool Steel
    		0.3430"7 1/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A1500000062987A55000003004A1700000
    0.7500" to 0.8125" (3/4" to 13/16")Tool Steel
    		0.3430"7 1/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A3400000062987A74000003004A1700000
    0.7813" to 0.8438" (25/32" to 27/32")Tool Steel
    		0.4060"7 1/2"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A1600000062987A56000003004A1800000
    0.8125" to 0.8750" (13/16" to 7/8")Tool Steel
    		0.4060"7 1/2"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A3500000062987A75000003004A1800000
    0.8438" to 0.9375" (27/32" to 15/16")Tool Steel
    		0.4370"8 1/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A1700000062987A57000003004A1900000
    0.8750" to 1.0000" (7/8" to 1")Tool Steel
    		0.4370"8 1/8"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A3600000062987A76000003004A1900000
    0.9375" to 1.0625" (15/16" to 1 1/16")Tool Steel
    		0.5000"9 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A1800000062987A58000003004A2100000
    1.0000" to 1.1250" (1" to 1 1/8")Tool Steel
    		0.5000"9 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A3700000062987A77000003004A2100000
    1.0625" to 1.1875" (1 1/16" to 1 3/16")Tool Steel
    		0.5310"10 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A1900000062987A59000003004A2300000
    1.1250" to 1.2500" (1 1/8" to 1 1/4")Tool Steel
    		0.5490"10 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A3800000062987A78000003004A2400000
    1.1875" to 1.3438" (1 3/16" to 1 11/32")Tool Steel
    		0.6250"11 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A200000062987A60000003004A2500000
    1.2500" to 1.4375" (1 1/4" to 1 7/16")Tool Steel
    		0.6250"11 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A3900000062987A790000003004A2500000
    1.3438" to 1.5313" (1 11/32" to 1 17/32")Tool Steel
    		0.6400"12"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A2100000062987A610000003004A27000000
    1.4375" to 1.6250" (1 7/16" to 1 5/8")Tool Steel
    		0.7500"12"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A400000062987A80000003004A28000000
    1.5313" to 1.7813" (1 17/32" to 1 25/32")Tool Steel
    		0.7500"14 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A2200000062987A620000003004A29000000
    1.6250" to 1.8750" (1 5/8" to 1 7/8")Tool Steel
    		0.8750"14 1/4"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A4100000062987A810000003004A31000000
    1.7813" to 2.0938" (1 25/32" to 2 3/32")Tool Steel
    		0.9370"16"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A2300000062987A630000003004A32000000
    1.8750" to 2.1875" (1 7/8" to 2 3/16")Tool Steel
    		1.0320"16"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A4200000062987A820000003004A66000000
    2.0938" to 2.4688" (2 3/32" to 2 15/32")Tool Steel
    		1.1870"18"6Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium2987A2400000062987A640000003004A36000000
     
    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
    0.1610"0.152"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, Steel2585A11000000
    0.1850"0.175"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, Steel2585A1500000
    0.1870"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, Steel2585A1700000
    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, Steel2585A1900000
    0.1890"0.180"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, Steel2585A2100000
    0.1910"0.180"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, Steel2585A2300000
    0.1935"0.183"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, Steel2585A2500000
    0.2031" (13/64")0.194"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, Steel2585A2700000
    0.2188" (7/32")0.207"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, Steel2585A2900000
    0.2344" (15/64")0.226"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, Steel2585A3100000
    0.2500" (1/4")0.240"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, Steel2585A3300000
    0.2656" (17/64")0.255"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, Steel2585A3500000
    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, Steel2585A3700000
    0.2969" (19/64")0.288"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, Steel2585A3900000
    0.3125" (5/16")0.300"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, Steel2585A4100000
     

    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.
    Adjustable Size, Square Shank
    Image of Product. Front orientation. Reamers. Reamers for Hole Alignment, Adjustable Size, Square Shank, Angled Blade.

    Angled Blade

    One tool both finishes multiple diameters and enlarges holes to correct misalignment and overlap. Also known as bridge and car reamers, they have a tapered shape that fits into the narrow entry of misaligned holes and makes more contact to remove the overlapping material. Change the reamer size by moving the adjustable blades within the diameter range.
    Move the blades by tightening and loosening the two nuts on the reamer. To measure size, adjust blades to a known size (such as a bushing or ring), or measure across two opposite blades with a micrometer. When the blades become worn, they can be reground or replaced.
    Turn these reamers by hand with an adjustable wrench or straight-handle tap wrench (sold separately).
    Angled Blade—These reamers are better than those with straight blades for finishing holes with breaks in the surface, such as a keyway.
    Tool Steel—Typically more economical but less durable than high-speed steel, these are for general purpose reaming.
    Long Reach—Align holes spaced far apart with reamers that have a long, built-in pilot. A floating sleeve guides and steadies the pilot through holes.
    Reamers
    Replacement Blades
    Lg.
    Reamer Dia.
    Material
    Square Shank
    Size
    Pilot
    Overall
    No. of
    Blades
    Performance
    For Use On
    Each
    Pkg.
    Qty.
    Pkg.
    Angled Blade
     
    Inch
    0.4688" to 0.5313" (15/32" to 17/32")Tool Steel
    		0.1870"10"15 5/8"6Long ReachAluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3027A11000000062987A51000000
    0.5313" to 0.5938" (17/32" to 19/32")Tool Steel
    		0.2180"10"15 5/8"6Long ReachAluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3027A1200000062987A5200000
    0.5938" to 0.6563" (19/32" to 21/32")Tool Steel
    		0.2810"12"18 5/8"6Long ReachAluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3027A1300000062987A5300000
    0.7188" to 0.7813" (23/32" to 25/32")Tool Steel
    		0.3430"16"23 1/8"6Long ReachAluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3027A1500000062987A5500000
    0.7813" to 0.8438" (25/32" to 27/32")Tool Steel
    		0.4060"16"23 1/2"6Long ReachAluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3027A1600000062987A5600000
    0.9375" to 1.0625" (15/16" to 1 1/16")Tool Steel
    		0.5000"18"27 1/8"6Long ReachAluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Steel, Titanium3027A1800000062987A5800000
     
    back to top