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)
    51 Products

    Performance

    Identification Type

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

    Tab End

    Square 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.
    Painted Aluminum—These shims are an alternative to stainless steel for rust resistance but aren't as hard so they may not retain their shape as well. One-third the weight of steel, they’re commonly used in robotics and automation.
    Plastic—Softer than metal, these shims won't mar delicate surfaces and they will never rust.
    Insertion Tools—Ease shim insertion and removal, keeping your fingers clear in the process.
    Shims
    Insertion Tools
    Slot
    Thk.
    Thk. Tolerance
    For Max.
    Screw Size
    Wd.
    Dp.
    Min.
    Hardness
    Identification
    Type
    Color
    End
    Shape
    Pkg.
    Qty.
    Pkg.
    Each
    18-8 Stainless Steel
     
    1 1/2" Lg. × 1 1/2" Wd. (Shim Trade Size AA)
    0.001"-0.00005" to 0.00005"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K1210000097235K900000
    0.002"-0.0001" to 0.0001"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K125000097235K90000
    0.003"-0.00015" to 0.00015"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K129000097235K90000
    0.004"-0.0002" to 0.0002"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K134000097235K90000
    0.005"-0.00025" to 0.00025"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K138000097235K90000
    0.008"-0.0004" to 0.0004"3/8"
    		7/16"61/64"Rockwell C42Labeled—Tab197235K381000097235K90000
    0.01"-0.0005" to 0.0005"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K143000097235K90000
    0.012"-0.0006" to 0.0006"3/8"
    		7/16"61/64"Rockwell C42Labeled—Tab197235K382000097235K90000
    0.015"-0.00075" to 0.00075"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K147000097235K90000
    0.02"-0.001" to 0.001"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K152000097235K90000
    0.025"-0.00125" to 0.00125"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K156000097235K90000
    0.03"-0.0015" to 0.0015"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K611000097235K90000
    0.04"-0.003" to 0.003"3/8"
    		7/16"61/64"Rockwell B70Labeled—Tab197235K383000097235K90000
    0.05"-0.002" to 0.002"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K161000097235K90000
    0.06"-0.003" to 0.003"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K612000097235K90000
    0.075"-0.002" to 0.002"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K165000097235K90000
    0.1"-0.004" to 0.004"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K169000097235K90000
    0.125"-0.004" to 0.004"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K174000097235K90000
    0.187"-0.01" to 0.01"3/8"
    		7/16"61/64"Rockwell B70Labeled—Tab197235K4110000097235K90000
    0.25"-0.01" to 0.01"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K6130000097235K90000
    0.375"-0.01" to 0.01"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K6650000097235K90000
    0.5"-0.015" to 0.015"3/8"
    		7/16"61/64"Rockwell B85Labeled—Tab197235K670000097235K90000
    0.75"-0.06" to 0.06"3/8"
    		7/16"61/64"Rockwell B70Labeled—Tab197235K4120000097235K90000
    1"-0.07" to 0.07"3/8"
    		7/16"61/64"Rockwell B70Labeled—Tab197235K4130000097235K90000
     
    Painted Aluminum
     
    1 1/2" Lg. × 1 1/2" Wd. (Shim Trade Size AA)
    0.002"-0.0002" to 0.0002"5/16"
    		3/8"15/16"Not RatedColor CodedRedSquare209302K010000———0
    0.003"-0.0003" to 0.0003"5/16"
    		3/8"15/16"Not RatedColor CodedGreenSquare209302K0110000———0
    0.005"-0.0005" to 0.0005"5/16"
    		3/8"15/16"Not RatedColor CodedBlueSquare209302K0130000———0
    0.01"-0.001" to 0.001"5/16"
    		3/8"15/16"Not RatedColor CodedBrownSquare209302K0150000———0
    0.015"-0.0015" to 0.0015"5/16"
    		3/8"15/16"Not RatedColor CodedPinkSquare209302K01600000———0
    0.02"-0.002" to 0.002"5/16"
    		3/8"15/16"Not RatedColor CodedYellowSquare209302K01700000———0
    0.025"-0.0025" to 0.0025"5/16"
    		3/8"15/16"Not RatedColor CodedWhiteSquare209302K01800000———0
    0.03"-0.003" to 0.003"5/16"
    		3/8"15/16"Not RatedColor CodedCoralSquare209302K01900000———0
     
    Plastic
     
    1 1/2" Lg. × 1 1/2" Wd. (Shim Trade Size AA)
    0.005"-0.0002" to 0.0002"5/16"
    		3/8"15/16"—Color CodedBlueSquare209303K050000———0
    0.01"-0.0005" to 0.0005"5/16"
    		3/8"15/16"—Color CodedBrownSquare209303K0110000———0
    0.015"-0.0015" to 0.0015"5/16"
    		3/8"15/16"—Color CodedPinkSquare209303K01200000———0
    0.02"-0.002" to 0.002"5/16"
    		3/8"15/16"—Color CodedYellowSquare209303K01300000———0
    0.025"-0.0025" to 0.0025"5/16"
    		3/8"15/16"—Color CodedWhiteSquare209303K01400000———0
    0.03"-0.003" to 0.003"5/16"
    		3/8"15/16"—Color CodedCoralSquare209303K01500000———0
    0.06"-0.006" to 0.006"5/16"
    		3/8"15/16"—Color CodedClearSquare59303K01600000———0
     

    Slotted Shim Assortments

    Image of ProductInUse. Front orientation. Shims. Slot, Precision Adjust, Sold as Assortments.
    When you don’t know the exact shim thickness you’ll need, keep multiple slotted shim thicknesses on hand so you always have the right one. 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.
    Shims
    Image of Product. Shims. Front orientation. Shims. Slot, Precision Adjust, Sold as Assortments.

    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.
    Painted Aluminum—These shims are an alternative to stainless steel for rust resistance but aren't as hard so they may not retain their shape as well. One-third the weight of steel, they’re commonly used in robotics and automation.
    Plastic—Softer than metal, these shims won't mar delicate surfaces and they will never rust.
    Insertion Tools—Ease shim insertion and removal, keeping your fingers clear in the process.
    Shims
    Insertion Tools
    Slot
    No. of
    Pieces
    Thicknesses Included
    For Max.
    Screw Size
    Wd.
    Dp.
    Min.
    Hardness
    Identification
    Type
    End
    Shape
    Each
    Each
    18-8 Stainless Steel
     
    1 1/2" Lg. × 1 1/2" Wd. (Shim Trade Size AA)
    130.001", 0.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.025", 0.050", 0.075", 0.100", 0.125"3/8"
    		7/16"61/64"Rockwell B70LabeledTab97235K21400000097235K900000
    260.001", 0.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.025", 0.050", 0.075", 0.100", 0.125"3/8"
    		7/16"61/64"Rockwell B70LabeledTab97235K8080000097235K90000
    650.001", 0.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.025", 0.050", 0.075", 0.125"3/8"
    		7/16"61/64"Rockwell B70LabeledTab97235K2150000097235K90000
     
    Painted Aluminum
     
    1 1/2" Lg. × 1 1/2" Wd. (Shim Trade Size AA)
    160.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.030"5/16"
    		3/8"15/16"Brinell 32Color CodedSquare9302K91100000———0
    800.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.030"5/16"
    		3/8"15/16"Brinell 32Color CodedSquare9302K91500000———0
    1600.002”, 0.003”, 0.004”, 0.005”, 0.010”, 0.015”, 0.020”, 0.030”5/16"
    		3/8"15/16"Brinell 32Color CodedSquare9302K9100000———0
     
    Plastic
     
    1 1/2" Lg. × 1 1/2" Wd. (Shim Trade Size AA)
    180.002”, 0.003”, 0.004", 0.005”, 0.010”, 0.015”, 0.020”, 0.030”, 0.060”5/16"
    		3/8"15/16"—Color CodedSquare9303K91100000———0
    900.002”, 0.003”, 0.004”, 0.005”, 0.010”, 0.015”, 0.020”, 0.030”, 0.060”5/16"
    		3/8"15/16"—Color CodedSquare9303K91500000———0
    1800.002”, 0.003”, 0.004”, 0.005”, 0.010”, 0.015”, 0.020”, 0.030”, 0.060”5/16"
    		3/8"15/16"—Color CodedSquare9303K9100000———0
     
    Shims with Metal Case
    Image of Product. Shims with Metal Case. Front orientation. Shims. Slot, Precision Adjust, Sold as Assortments, Shims with Metal Case.

    Shims with Metal Case

    Protect the shims from damage with the rugged metal case. Dividers sort the shims by thickness, while sturdy handles make it easy to carry them around.
    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
    No. of
    Pieces
    Thicknesses Included
    For Max.
    Screw Size
    Wd.
    Dp.
    Min.
    Hardness
    Identification
    Type
    End
    Shape
    Each
    Each
    18-8 Stainless Steel
     
    1 1/2" Lg. × 1 1/2" Wd. (Shim Trade Size AA)
    1300.001", 0.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.025", 0.050", 0.075", 0.100", 0.125"3/8"
    		7/16"61/64"Rockwell B70LabeledTab97235K81000000097235K900000
    2600.001", 0.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.025", 0.050", 0.075", 0.100", 0.125"3/8"
    		7/16"61/64"Rockwell B70LabeledTab97235K81500000097235K90000
     
    back to top