McMaster-Carr logo
    Filter by
    System of Measurement
    Thickness
    Shim Trade Size
    Sold As
    DFARS Specialty Metals
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    End Shape
    Number of Slots
    Shaft Type
    Identification Type
    Specifications Met
    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)
    74 Products

    Shims

    Image of Product. Front orientation. Shims. Round, Sold Individually.
    With thickness tolerances as fine as a strand of hair, these shims precisely align, space, and level components on shafts, arbors, and machinery.
    You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.
    Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these shims won't degrade when exposed to harsh weather, salt water, and most chemicals.
    Carbon Steel—Best for dry environments since moisture will cause these shims to rust.
    Thk.
    Thk. Tolerance
    ID Tolerance
    OD Tolerance
    Min.
    Hardness
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    1/4" ID × 3/8" OD
    0.075"-0.004" to 0.004"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240100000000000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
     
    1" ID × 1 1/2" OD
    0.075"-0.003" to 0.005"-0.005" to 0.005"-0.005" to 0.005"Rockwell B70ASTM A24010000000000000
     
    Carbon Steel
     
    3/8" ID × 5/8" OD
    0.075"-0.0073" to 0.0067"-0.005" to 0.005"-0.005" to 0.005"Rockwell B67—1000000000000
     
    1/2" ID × 3/4" OD
    0.075"-0.0073" to 0.0067"-0.005" to 0.005"-0.005" to 0.005"Rockwell B67—1000000000000
     
    5/8" ID × 1" OD
    0.075"-0.0073" to 0.0067"-0.005" to 0.005"-0.005" to 0.005"Rockwell B67—1000000000000
     
    3/4" ID × 1 1/8" OD
    0.075"-0.0073" to 0.0067"-0.005" to 0.005"-0.005" to 0.005"Rockwell B67—1000000000000
     
    1" ID × 1 1/2" OD
    0.075"-0.0073" to 0.0067"-0.005" to 0.005"-0.005" to 0.005"Rockwell B67—1000000000000
     

    Slotted Shims

    Image of ProductInUse. Front orientation. Shims. Precision Adjust, Slot, Sold Individually.
    Image of Product. Front orientation. Shims. Precision Adjust, Slot, Sold Individually, Tab End.

    Tab End

    Slip these shims around existing mounting fasteners to precisely align and level components such as pumps, compressors, and gearboxes with motors, all without disassembling them. They’re also good for leveling machines on uneven surfaces. To reduce sizing errors, these shims are either labeled with their thickness so there's no need to measure or color coded by thickness to quickly spot the right size.
    You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.
    Insertion Tools—Ease shim insertion and removal, keeping your fingers clear in the process.
    Shims
    Insertion Tools
    Slot
    Each
    Thk.
    Thk. Tolerance
    For Max.
    Screw Size
    Wd.
    Dp.
    Min.
    Hardness
    Identification
    Type
    End
    Shape
    1-9
    10-Up
    Each
    18-8 Stainless Steel
     
    1" Lg. × 1" Wd. (Shim Trade Size AAA)
    0.075"-0.002" to 0.002"1/4"
    		5/16"5/8"Rockwell B70LabeledTab0000000000000000000000000000000
     
    1 1/2" Lg. × 1 1/2" Wd. (Shim Trade Size AA)
    0.075"-0.002" to 0.002"3/8"
    		7/16"61/64"Rockwell B85LabeledTab0000000000000000000000000000
     
    2" Lg. × 2" Wd. (Shim Trade Size A)
    0.075"-0.002" to 0.002"1/2"
    		9/16"1 9/32"Rockwell B85LabeledTab0000000000000000000000000000
     
    2 1/2" Lg. × 2 1/2" Wd. (Shim Trade Size BB)
    0.075"-0.002" to 0.002"5/8"
    		11/16"1 19/32"Rockwell B85LabeledTab000000000000000000000000000000
     
    3" Lg. × 3" Wd. (Shim Trade Size B)
    0.075"-0.002" to 0.002"3/4"
    		13/16"1 29/32"Rockwell B85LabeledTab000000000000000000000000000
     
    4" Lg. × 4" Wd. (Shim Trade Size C)
    0.075"-0.002" to 0.002"1 1/8"
    		1 3/16"2 19/32"Rockwell B85LabeledTab000000000000000000000000000
     
    5" Lg. × 5" Wd. (Shim Trade Size D)
    0.075"-0.002" to 0.002"1 1/2"
    		1 9/16"3 9/32"Rockwell B85LabeledTab00000000000000000000000000000
     
    6" Lg. × 5" Wd. (Shim Trade Size DD)
    0.075"-0.002" to 0.002"1 1/2"
    		1 9/16"4 1/2"Rockwell B70LabeledTab0000000000000000000———0
     
    6" Lg. × 6" Wd. (Shim Trade Size E)
    0.075"-0.002" to 0.002"1 7/8"
    		1 15/16"4"Rockwell B85LabeledTab0000000000000000000000000000000
     
    6" Lg. × 6" Wd. (Shim Trade Size G)
    0.075"-0.002" to 0.002"2 1/4"
    		2 5/16"4 3/16"Rockwell B85LabeledTab0000000000000000000000000000000
     
    8" Lg. × 8" Wd. (Shim Trade Size H)
    0.075"-0.002" to 0.002"2 1/4"
    		2 5/16"5 3/16"Rockwell B85LabeledTab00000000000000000000000000000000
     

    Wide-Rim Shims

    Image of Product. Front orientation. Shims. Wide Rim, Round, Sold Individually.
    Spread loads across a wider surface area than standard shims to minimize costly wear between components. With thickness tolerances as fine as a strand of hair, these shims precisely align, space, and level components on shafts, arbors, and machinery.
    You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.
    Carbon Steel—Best for dry environments since moisture will cause these shims to rust.
    Zinc-Plated Carbon Steel—A common choice for areas with occasional exposure to moisture.
    Thk.
    Thk. Tolerance
    ID Tolerance
    OD Tolerance
    Min.
    Hardness
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    1/2" ID × 7/8" OD
    0.075"-0.007" to 0.007"-0.01" to 0.01"-0.005" to 0.025"Rockwell B205000000000000000
     
    9/16" ID × 1" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B3850000000000000
     
    5/8" ID × 1 1/4" OD
    0.075"-0.007" to 0.007"-0.01" to 0.01"-0.005" to 0.025"Rockwell B20500000000000000
     
    3/4" ID × 1 1/4" OD
    0.075"-0.007" to 0.007"-0.01" to 0.01"-0.005" to 0.025"Rockwell B20500000000000000
     
    3/4" ID × 1 1/2" OD
    0.075"-0.007" to 0.007"-0.01" to 0.01"-0.005" to 0.025"Rockwell B2010000000000000
     
    1" ID × 1 1/2" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B3810000000000000
     
    1" ID × 2" OD
    0.075"-0.007" to 0.007"-0.01" to 0.01"-0.005" to 0.025"Rockwell B2010000000000000
     
    1 1/4" ID × 1 7/8" OD
    0.075"-0.007" to 0.007"-0.01" to 0.01"-0.005" to 0.025"Rockwell B2010000000000000
     
    1 1/2" ID × 2 1/4" OD
    0.075"-0.007" to 0.007"-0.01" to 0.01"-0.005" to 0.025"Rockwell B2010000000000000
     
    Carbon Steel
     
    1/2" ID × 7/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    9/16" ID × 1" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    5/8" ID × 1" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    5/8" ID × 1 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    3/4" ID × 1 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    3/4" ID × 1 1/2" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    7/8" ID × 1 3/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    7/8" ID × 1 3/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    1" ID × 1 1/2" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    1" ID × 2" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    1 1/8" ID × 1 3/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    1 1/4" ID × 1 7/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    1 1/4" ID × 2 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    1 3/8" ID × 2 1/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    1 1/2" ID × 2 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    1 1/2" ID × 3" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38500000000000000
     
    1 5/8" ID × 2 3/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    1 3/4" ID × 2 1/2" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    2" ID × 3" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B381000000000000000
     
    3" ID × 4 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38500000000000000
     
    Zinc-Plated Carbon Steel
     
    1/4" ID × 5/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    3/8" ID × 3/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    1/2" ID × 7/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    9/16" ID × 1" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    5/8" ID × 1" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    5/8" ID × 1 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    3/4" ID × 1 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    3/4" ID × 1 1/2" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    7/8" ID × 1 3/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    1" ID × 1 1/2" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38250000000000000
     
    1" ID × 2" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B382500000000000000
     
    1 1/8" ID × 1 3/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    1 1/4" ID × 1 7/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    1 1/4" ID × 2 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    1 3/8" ID × 2 1/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    1 1/2" ID × 2 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    1 1/2" ID × 3" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B3850000000000000
     
    1 5/8" ID × 2 3/8" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    1 3/4" ID × 2 1/2" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B38100000000000000
     
    2" ID × 3" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B3850000000000000
     
    3" ID × 4 1/4" OD
    0.075"-0.007" to 0.007"0.01" to 0.025"-0.01" to 0.01"Rockwell B3810000000000000
     
    back to top