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    360 Products

    Performance

    Performance

    Made-to-Order Shims

    Image of Product. Front orientation. Shims. Sold Individually, Made-to-Order.
    If you need a unique shim shape or size, we’ll precision cut it for you. 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.
    Send your dimensioned DWG, DXF, IGES, or STEP file to sales@mcmaster.com. Please leave at least 1/8" wall between shim edge and holes. Minimum hole size is 1/8". Shims should be no smaller than 1" × 1" square or 1" OD. Maximum shim dimension is the largest overall length, width, or diameter of your custom shim.
    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.
    Highly 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.
    Brass—With a warm, polished look, these shims are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.
    2" × 2" Maximum
    Shim Size
    5" × 5" Maximum
    Shim Size
    7" × 7" Maximum
    Shim Size
    11" × 11" Maximum
    Shim Size
    23" × 23" Maximum
    Shim Size
    Thk.
    Thk. Tolerance
    Min.
    Hardness
    Specs.
    Met
    Mil. Spec.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    0.001"-0.00005" to 0.00005"Rockwell C42ASTM A240—1611885N172000000411885N187000000911885N2030000000411885N2180000000111885N2340000000
    0.002"-0.0001" to 0.0001"Rockwell C42ASTM A240—1611885N17300000411885N18800000911885N204000000411885N219000000111885N235000000
    0.003"-0.00015" to 0.00015"Rockwell C42ASTM A240—1611885N17400000411885N18900000911885N205000000411885N221000000111885N236000000
    0.004"-0.0002" to 0.0002"Rockwell C42ASTM A240—1611885N17500000411885N19100000911885N206000000411885N222000000111885N237000000
    0.005"-0.00025" to 0.00025"Rockwell C42ASTM A240—1611885N17600000411885N19200000911885N207000000411885N223000000111885N238000000
    0.006"-0.0003" to 0.0003"Rockwell C42ASTM A240—1611885N17700000411885N19300000911885N208000000411885N224000000111885N239000000
    0.007"-0.00035" to 0.00035"Rockwell C42ASTM A240—1611885N17800000411885N19400000911885N209000000411885N225000000111885N241000000
    0.008"-0.0004" to 0.0004"Rockwell C42ASTM A240—1611885N17900000411885N19500000911885N211000000411885N226000000111885N242000000
    0.009"-0.00045" to 0.00045"Rockwell C42ASTM A240—1611885N18100000411885N19600000911885N212000000411885N227000000111885N243000000
    0.01"-0.0005" to 0.0005"Rockwell C42ASTM A240—1611885N18200000411885N19700000911885N213000000411885N228000000111885N244000000
    0.015"-0.00075" to 0.00075"Rockwell C42ASTM A240—1611885N18300000411885N19800000911885N214000000411885N229000000111885N245000000
    0.02"-0.001" to 0.001"Rockwell C42ASTM A240—1611885N18400000411885N19900000911885N215000000411885N231000000111885N246000000
    0.025"-0.00125" to 0.00125"Rockwell C42ASTM A240—1611885N18500000411885N20100000911885N216000000411885N232000000111885N247000000
    0.031"-0.00155" to 0.00155"Rockwell C42ASTM A240—1611885N18600000411885N20200000911885N217000000411885N233000000111885N248000000
     
    Highly Corrosion-Resistant 316 Stainless Steel
    0.001"-0.00005" to 0.00005"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N10100000411885N11600000————0————0————0
    0.002"-0.0001" to 0.0001"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N10200000411885N11700000911885N132000000411885N145000000111885N158000000
    0.003"-0.00015" to 0.00015"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N10300000411885N11800000911885N133000000411885N146000000111885N159000000
    0.004"-0.0002" to 0.0002"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N10400000411885N11900000911885N134000000411885N147000000111885N161000000
    0.005"-0.00025" to 0.00025"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N10500000411885N12100000911885N135000000411885N148000000111885N162000000
    0.006"-0.0003" to 0.0003"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N10600000411885N12200000911885N136000000411885N149000000111885N163000000
    0.007"-0.00035" to 0.00035"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N10700000411885N12300000911885N137000000411885N151000000111885N164000000
    0.008"-0.0004" to 0.0004"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N10800000411885N12400000911885N138000000411885N152000000111885N165000000
    0.009"-0.00045" to 0.00045"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N10900000411885N12500000————0————0————0
    0.01"-0.0005" to 0.0005"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N11100000411885N12600000911885N139000000411885N153000000111885N166000000
    0.015"-0.00075" to 0.00075"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N11200000411885N12700000911885N141000000411885N154000000111885N167000000
    0.02"-0.001" to 0.001"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N113000000411885N128000000911885N142000000411885N155000000111885N168000000
    0.025"-0.00125" to 0.00125"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N11400000411885N12900000911885N143000000411885N156000000111885N169000000
    0.031"-0.00155" to 0.00155"Not RatedASTM A240Fed. Spec. QQ-S-7661611885N115000000411885N131000000911885N144000000411885N157000000111885N171000000
     
    Carbon Steel
    0.001"-0.00005" to 0.00005"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N24900000411885N26500000————0————0————0
    0.002"-0.0001" to 0.0001"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N25100000411885N26600000911885N281000000411885N295000000111885N309000000
    0.003"-0.00015" to 0.00015"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N25200000411885N26700000911885N282000000411885N296000000111885N311000000
    0.004"-0.0002" to 0.0002"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N25300000411885N26800000911885N283000000411885N297000000111885N312000000
    0.005"-0.00025" to 0.00025"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N25400000411885N26900000911885N28400000411885N29800000111885N31300000
    0.006"-0.0003" to 0.0003"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N25500000411885N27100000911885N28500000411885N29900000111885N31400000
    0.007"-0.00035" to 0.00035"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N25600000411885N27200000911885N28600000411885N30100000111885N31500000
    0.008"-0.0004" to 0.0004"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N25700000411885N27300000911885N28700000411885N30200000111885N31600000
    0.009"-0.00045" to 0.00045"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N25800000411885N27400000911885N28800000411885N30300000111885N31700000
    0.01"-0.0005" to 0.0005"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N25900000411885N27500000911885N28900000411885N30400000111885N31800000
    0.015"-0.00075" to 0.00075"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N26100000411885N27600000911885N29100000411885N30500000111885N31900000
    0.02"-0.001" to 0.001"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N26200000411885N27700000911885N29200000411885N30600000111885N32100000
    0.025"-0.00125" to 0.00125"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N26300000411885N27800000911885N29300000411885N30700000111885N32200000
    0.031"-0.00155" to 0.00155"Rockwell B90ASTM A109Fed. Spec. QQ-S-6981611885N26400000411885N27900000911885N29400000411885N30800000111885N32300000
     
    Brass
    0.001"-0.00005" to 0.00005"Rockwell B60ASTM B36Fed. Spec. QQ-B-6131611885N32400000411885N33400000————0————0————0
    0.002"-0.0001" to 0.0001"Rockwell B60ASTM B36Fed. Spec. QQ-B-6131611885N32500000411885N33500000911885N344000000411885N352000000111885N359000000
    0.003"-0.00015" to 0.00015"Rockwell B60ASTM B36Fed. Spec. QQ-B-6131611885N32600000411885N33600000911885N345000000411885N353000000111885N361000000
    0.004"-0.0002" to 0.0002"Rockwell B60ASTM B36Fed. Spec. QQ-B-6131611885N32700000411885N33700000————0————0————0
    0.005"-0.00025" to 0.00025"Rockwell B60ASTM B36Fed. Spec. QQ-B-6131611885N32800000411885N33800000911885N346000000411885N354000000111885N362000000
    0.01"-0.0005" to 0.0005"Rockwell B60ASTM B36Fed. Spec. QQ-B-6131611885N32900000411885N33900000911885N347000000411885N355000000111885N363000000
    0.02"-0.001" to 0.001"Rockwell B60ASTM B36Fed. Spec. QQ-B-6131611885N33100000411885N34100000911885N348000000411885N356000000111885N364000000
    0.025"-0.00125" to 0.00125"Rockwell B60ASTM B36Fed. Spec. QQ-B-6131611885N33200000411885N34200000911885N349000000411885N357000000111885N365000000
    0.031"-0.00155" to 0.00155"Rockwell B60ASTM B36Fed. Spec. QQ-B-6131611885N33300000411885N34300000911885N351000000411885N358000000111885N366000000
     

    Peel-Away Multilayer Made-to-Order Shims

    Image of Product. Front orientation. Shims. Multilayer, Sold Individually, Made-to-Order, Peel Away.
    If you need a unique peel-away shim shape or size, we’ll precision cut it for you. Use these shims to fine-tune thickness without worrying about stacking multiple shims. They're made of metal layers bonded with adhesive—peel off the layers with a utility knife until you reach your desired thickness. To make peeling easier, warm the shims to soften the adhesive. With thickness tolerances as fine as a strand of hair, all of these shims precisely align, space, and level components on shafts, arbors, and machinery.
    Send your dimensioned DWG, DXF, IGES, or STEP file to sales@mcmaster.com. Please leave at least 1/8" wall between shim edge and holes. Minimum hole size is 1/4". Shims should be no smaller than 1" × 1" square or 1" OD. Maximum shim dimension is the largest overall length, width, or diameter of your custom shim.
    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.
    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.
    Brass—With a warm, polished look, these shims are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.
    2" × 2" Maximum
    Shim Size
    5" × 5" Maximum
    Shim Size
    7" × 7" Maximum
    Shim Size
    11" × 11" Maximum
    Shim Size
    23" × 23" Maximum
    Shim Size
    Thk.
    Thk. Tolerance
    No. of
    Layers
    Layer
    Thk.
    Min.
    Hardness
    Specs. Met
    Mil. Spec.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    0.008"-0.0004" to 0.0004"40.002"Rockwell B80ASTM A240—1611885N3670000000411885N3740000000911885N3810000000411885N3870000000111885N3940000000
    0.016"-0.0008" to 0.0008"80.002"Rockwell B80ASTM A240—1611885N368000000411885N375000000911885N382000000411885N388000000111885N395000000
    0.032"-0.0016" to 0.0016"160.002"Rockwell B80ASTM A240—1611885N369000000411885N376000000911885N383000000411885N389000000111885N396000000
    0.048"-0.0024" to 0.0024"240.002"Rockwell B80ASTM A240—1611885N371000000411885N377000000911885N384000000411885N391000000111885N397000000
    0.062"-0.0031" to 0.0031"320.002"Rockwell B80ASTM A240—1611885N372000000411885N378000000911885N385000000411885N392000000111885N398000000
    0.124"-0.0062" to 0.0062"620.002"Rockwell B80ASTM A240—1611885N373000000411885N379000000911885N38600000000411885N39300000000111885N39900000000
     
    Carbon Steel
    0.008"-0.0004" to 0.0004"40.002"Rockwell B54—Fed. Spec. QQ-S-6981611885N40100000411885N40700000911885N414000000411885N421000000111885N427000000
    0.016"-0.0008" to 0.0008"80.002"Rockwell B54—Fed. Spec. QQ-S-6981611885N40200000411885N40800000911885N415000000411885N422000000111885N428000000
    0.032"-0.0016" to 0.0016"160.002"Rockwell B54—Fed. Spec. QQ-S-6981611885N403000000411885N409000000911885N416000000411885N423000000111885N429000000
    0.048"-0.0024" to 0.0024"240.002"Rockwell B54—Fed. Spec. QQ-S-6981611885N404000000411885N411000000911885N417000000411885N424000000111885N431000000
    0.062"-0.0031" to 0.0031"320.002"Rockwell B54—Fed. Spec. QQ-S-6981611885N405000000411885N412000000911885N418000000411885N425000000111885N432000000
    0.124"-0.0062" to 0.0062"620.002"Rockwell B54—Fed. Spec. QQ-S-6981611885N406000000411885N413000000911885N419000000411885N426000000111885N433000000
     
    Aluminum
    0.008"-0.0004" to 0.0004"40.002"Not RatedASTM B209, SAE AMS-DTL-22499—1611885N43400000411885N44100000911885N447000000411885N454000000111885N461000000
    0.016"-0.0008" to 0.0008"80.002"Not RatedASTM B209, SAE AMS-DTL-22499—1611885N43500000411885N44200000911885N448000000411885N455000000111885N462000000
    0.032"-0.0016" to 0.0016"160.002"Not RatedASTM B209, SAE AMS-DTL-22499—1611885N43600000411885N44300000911885N449000000411885N456000000111885N463000000
    0.048"-0.0024" to 0.0024"240.002"Not RatedASTM B209, SAE AMS-DTL-22499—1611885N43700000411885N44400000911885N451000000411885N457000000111885N464000000
    0.062"-0.0031" to 0.0031"320.002"Not RatedASTM B209, SAE AMS-DTL-22499—1611885N438000000411885N445000000911885N452000000411885N458000000111885N465000000
    0.124"-0.0062" to 0.0062"620.002"Not RatedASTM B209, SAE AMS-DTL-22499—1611885N439000000411885N446000000911885N453000000411885N459000000111885N466000000
     
    Brass
    0.008"-0.0004" to 0.0004"40.002"Not RatedASTM B36—1611885N467000000411885N474000000911885N481000000411885N487000000111885N494000000
    0.016"-0.0008" to 0.0008"80.002"Not RatedASTM B36—1611885N468000000411885N475000000911885N482000000411885N488000000111885N495000000
    0.032"-0.0016" to 0.0016"160.002"Not RatedASTM B36—1611885N469000000411885N476000000911885N483000000411885N489000000111885N496000000
    0.048"-0.0024" to 0.0024"240.002"Not RatedASTM B36—1611885N471000000411885N477000000911885N484000000411885N491000000111885N497000000
    0.062"-0.0031" to 0.0031"320.002"Not RatedASTM B36—1611885N472000000411885N478000000911885N485000000411885N492000000111885N498000000
    0.124"-0.0062" to 0.0062"620.002"Not RatedASTM B36—1611885N473000000411885N479000000911885N48600000000411885N49300000000111885N49900000000
     
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