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)
    74 Products

    Performance

    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.
    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.
    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
     
    2" Lg. × 2" Wd. (Shim Trade Size A)
    0.001"-0.00005" to 0.00005"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K210000097235K91500000
    0.002"-0.0001" to 0.0001"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K25000097235K9150000
    0.003"-0.00015" to 0.00015"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K31000097235K9150000
    0.004"-0.0002" to 0.0002"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K35000097235K9150000
    0.005"-0.00025" to 0.00025"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K41000097235K9150000
    0.008"-0.0004" to 0.0004"1/2"
    		9/16"1 9/32"Rockwell C42Labeled—Tab19722K384000097235K9150000
    0.01"-0.0005" to 0.0005"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K45000097235K9150000
    0.012"-0.0006" to 0.0006"1/2"
    		9/16"1 9/32"Rockwell C42Labeled—Tab19722K385000097235K9150000
    0.015"-0.00075" to 0.00075"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K51000097235K9150000
    0.02"-0.001" to 0.001"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K55000097235K9150000
    0.025"-0.00125" to 0.00125"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K61000097235K9150000
    0.03"-0.0015" to 0.0015"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K633000097235K9150000
    0.04"-0.003" to 0.003"1/2"
    		9/16"1 9/32"Rockwell B70Labeled—Tab19722K386000097235K9150000
    0.05"-0.002" to 0.002"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K65000097235K9150000
    0.06"-0.003" to 0.003"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K642000097235K9150000
    0.075"-0.002" to 0.002"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K71000097235K9150000
    0.1"-0.004" to 0.004"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K75000097235K9150000
    0.125"-0.004" to 0.004"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K81000097235K9150000
    0.187"-0.01" to 0.01"1/2"
    		9/16"1 9/32"Rockwell B70Labeled—Tab19722K6140000097235K9150000
    0.25"-0.01" to 0.01"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K1130000097235K9150000
    0.375"-0.01" to 0.01"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K1160000097235K9150000
    0.5"-0.015" to 0.015"1/2"
    		9/16"1 9/32"Rockwell B85Labeled—Tab19722K1180000097235K9150000
    0.75"-0.06" to 0.06"1/2"
    		9/16"1 9/32"Rockwell B70Labeled—Tab19722K6150000097235K9150000
    1"-0.07" to 0.07"1/2"
    		9/16"1 9/32"Rockwell B70Labeled—Tab19722K6160000097235K9150000
     
    50 mm Lg. × 50 mm Wd. (Shim Trade Size A)
    0.025 mm-0.0025 mm to 0.0025 mmM15
    		15.9 mm25.4 mmRockwell C40Labeled—Tab19722K411000097235K9150000
    0.05 mm-0.0035 mm to 0.0035 mmM15
    		15.9 mm25.4 mmRockwell C40Labeled—Tab19722K511000097235K9150000
    0.1 mm-0.007 mm to 0.007 mmM15
    		15.9 mm25.4 mmRockwell C40Labeled—Tab19722K911000097235K9150000
    0.2 mm-0.015 mm to 0.015 mmM15
    		15.9 mm25.4 mmRockwell C40Labeled—Tab19722K191000097235K9150000
    0.25 mm-0.02 mm to 0.02 mmM15
    		15.9 mm25.4 mmRockwell C40Labeled—Tab19722K291000097235K9150000
    0.4 mm-0.032 mm to 0.032 mmM15
    		15.9 mm25.4 mmRockwell C40Labeled—Tab19722K391000097235K9150000
    0.5 mm-0.032 mm to 0.032 mmM15
    		15.9 mm25.4 mmRockwell C40Labeled—Tab19722K491000097235K9150000
    0.7 mm-0.032 mm to 0.032 mmM15
    		15.9 mm25.4 mmRockwell B70Labeled—Tab19722K591000097235K9150000
    1 mm-0.05 mm to 0.05 mmM15
    		15.9 mm25.4 mmNot RatedLabeled—Tab19722K691000097235K9150000
    2 mm-0.07 mm to 0.07 mmM15
    		15.9 mm25.4 mmNot RatedLabeled—Tab19722K791000097235K9150000
     
    Super-Corrosion-Resistant 316 Stainless Steel
     
    2" Lg. × 2" Wd. (Shim Trade Size A)
    0.005"-0.0001" to 0.0001"9/16"
    		5/8"1 9/32"Rockwell C36Labeled—Tab194420A115000094420A5000000
    0.01"-0.0005" to 0.0005"9/16"
    		5/8"1 9/32"Rockwell C36Labeled—Tab194420A122000094420A5000000
    0.015"-0.0005" to 0.0005"9/16"
    		5/8"1 9/32"Rockwell C36Labeled—Tab194420A130000094420A5000000
    0.02"-0.00025" to 0.00025"9/16"
    		5/8"1 9/32"Rockwell C36Labeled—Tab194420A137000094420A5000000
    0.025"-0.0008" to 0.0008"9/16"
    		5/8"1 9/32"Rockwell C36Labeled—Tab194420A145000094420A5000000
    0.05"-0.002" to 0.002"9/16"
    		5/8"1 9/32"Rockwell C36Labeled—Tab194420A152000094420A5000000
    0.125"-0.003" to 0.003"9/16"
    		5/8"1 9/32"Rockwell C36Labeled—Tab194420A160000094420A5000000
     
    Painted Aluminum
     
    2" Lg. × 2" Wd. (Shim Trade Size A)
    0.002"-0.0002" to 0.0002"3/8"
    		7/16"1 7/32"Not RatedColor CodedRedSquare209302K220000———0
    0.003"-0.0003" to 0.0003"3/8"
    		7/16"1 7/32"Not RatedColor CodedGreenSquare209302K230000———0
    0.005"-0.0005" to 0.0005"3/8"
    		7/16"1 7/32"Not RatedColor CodedBlueSquare209302K250000———0
    0.01"-0.001" to 0.001"3/8"
    		7/16"1 7/32"Not RatedColor CodedBrownSquare209302K310000———0
    0.015"-0.0015" to 0.0015"3/8"
    		7/16"1 7/32"Not RatedColor CodedPinkSquare209302K3200000———0
    0.02"-0.002" to 0.002"3/8"
    		7/16"1 7/32"Not RatedColor CodedYellowSquare209302K3300000———0
    0.025"-0.0025" to 0.0025"3/8"
    		7/16"1 7/32"Not RatedColor CodedWhiteSquare209302K3400000———0
    0.03"-0.003" to 0.003"3/8"
    		7/16"1 7/32"Not RatedColor CodedCoralSquare209302K3500000———0
    0.06"-0.006" to 0.006"3/8"
    		7/16"1 7/32"Not RatedColor CodedGraySquare209302K3600000———0
     
    Plastic
     
    2" Lg. × 2" Wd. (Shim Trade Size A)
    0.005"-0.0002" to 0.0002"3/8"
    		7/16"1 7/32"—Color CodedBlueSquare209303K250000———0
    0.01"-0.0005" to 0.0005"3/8"
    		7/16"1 7/32"—Color CodedBrownSquare209303K310000———0
    0.015"-0.0015" to 0.0015"3/8"
    		7/16"1 7/32"—Color CodedPinkSquare209303K3200000———0
    0.02"-0.002" to 0.002"3/8"
    		7/16"1 7/32"—Color CodedYellowSquare209303K3300000———0
    0.025"-0.0025" to 0.0025"3/8"
    		7/16"1 7/32"—Color CodedWhiteSquare209303K3400000———0
    0.03"-0.003" to 0.003"3/8"
    		7/16"1 7/32"—Color CodedCoralSquare209303K3500000———0
    0.06"-0.006" to 0.006"3/8"
    		7/16"1 7/32"—Color CodedClearSquare109303K3600000———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
     
    2" Lg. × 2" Wd. (Shim Trade Size A)
    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"1/2"
    		9/16"1 9/32"Rockwell B70LabeledTab97235K21100000097235K91500000
    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"1/2"
    		9/16"1 9/32"Rockwell B70LabeledTab97235K8160000097235K9150000
    650.001", 0.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.025", 0.050", 0.075", 0.125"1/2"
    		9/16"1 9/32"Rockwell B70LabeledTab97235K21200000097235K9150000
     
    50 mm Lg. × 50 mm Wd. (Shim Trade Size A)
    100.025 mm, 0.050 mm, 0.100 mm, 0.200 mm, 0.250 mm, 0.400 mm, 0.500 mm, 0.700 mm, 1.000 mm, 2.000 mmM15
    		15.88 mm25.4 mmNot RatedLabeledTab9722K7120000097235K9150000
    200.025 mm, 0.050 mm, 0.100 mm, 0.20 mm, 0.250 mm, 0.400 mm, 0.500 mm, 0.700 mm, 1.000 mm, 2.000 mmM15
    		15.88 mm25.4 mmNot RatedLabeledTab9722K2110000097235K9150000
    1000.025 mm, 0.050 mm, 0.100 mm, 0.200 mm, 0.250 mm, 0.400 mm, 0.500 mm, 0.700 mm, 1.000 mm, 2.000 mmM15
    		15.88 mm25.4 mmNot RatedLabeledTab9722K81200000097235K9150000
    2000.025 mm, 0.050 mm, 0.100 mm, 0.200 mm, 0.250 mm, 0.400 mm, 0.500 mm, 0.700 mm, 1.000 mm, 2.000 mmM15
    		15.88 mm25.4 mmNot RatedLabeledTab9722K21200000097235K9150000
     
    Painted Aluminum
     
    2" Lg. × 2" Wd. (Shim Trade Size A)
    180.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.030", 0.060”3/8"
    		7/16"1 7/32"Brinell 32Color CodedSquare9302K92100000———0
    900.002", 0.003", 0.004", 0.005", 0.010", 0.015", 0.020", 0.030", 0.060”3/8"
    		7/16"1 7/32"Brinell 32Color CodedSquare9302K92500000———0
    1800.002”, 0.003”, 0.004”, 0.005”, 0.010”, 0.015”, 0.020”, 0.030”, 0.060”3/8"
    		7/16"1 7/32"Brinell 32Color CodedSquare9302K9200000———0
     
    Plastic
     
    2" Lg. × 2" Wd. (Shim Trade Size A)
    180.002”, 0.003”, 0.004", 0.005”, 0.010”, 0.015”, 0.020”, 0.030”, 0.060”3/8"
    		7/16"1 7/32"—Color CodedSquare9303K92100000———0
    900.002”, 0.003”, 0.004”, 0.005”, 0.010”, 0.015”, 0.020”, 0.030”, 0.060”3/8"
    		7/16"1 7/32"—Color CodedSquare9303K92500000———0
    1800.002”, 0.003”, 0.004”, 0.005”, 0.010”, 0.015”, 0.020”, 0.030”, 0.060”3/8"
    		7/16"1 7/32"—Color CodedSquare9303K9200000———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
     
    2" Lg. × 2" Wd. (Shim Trade Size A)
    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"1/2"
    		9/16"1 9/32"Rockwell B70LabeledTab97235K82000000097235K91500000
    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"1/2"
    		9/16"1 9/32"Rockwell B70LabeledTab97235K82500000097235K9150000
     
    back to top