McMaster-Carr logo
    Filter by
    System of Measurement
    Thickness
    Washer Type
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Sold As
    DFARS Specialty Metals
    Industrial Info Compare
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Shaft Type
    Passivation
    Specifications Met
    Industrial Info Compare
    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)
    123 Products

    Shims

    Image of Product. Front orientation. Shims. Sold Individually, Round.
    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.
    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.
    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.
    Copper—Good conductors of heat, these shims are often used when installing heat sinks. As our softest metal shims, they prevent damage to equipment and components but may not retain their shape as well as other metal shims.
    Material Certificate—Shims include a report with a traceable lot number.
    Thk.
    Thk. Tolerance
    ID
    Tolerance
    OD Tolerance
    Min.
    Hardness
    Specs.
    Met
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    1/32" ID × 7/64" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——2599040A911000000
     
    3/64" ID × 1/8" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——2599040A93100000
     
    1/16" ID × 5/32" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——2599040A95100000
     
    5/64" ID × 5/32" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——2599040A01600000
     
    3/32" ID × 13/64" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70—Material Certificate
    		2599040A21600000
     
    1/8" ID × 3/16" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——2599040A31600000
     
    3/16" ID × 1/4" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70—Material Certificate
    		2599040A41600000
     
    1/4" ID × 3/8" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——2599040A51600000
     
    5/16" ID × 1/2" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70—Material Certificate
    		2599040A61600000
     
    3/8" ID × 9/16" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70—Material Certificate
    		2599040A71600000
     
    3/8" ID × 5/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1098126A53200000
     
    1/2" ID × 3/4" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——2599040A81600000
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1098126A5350000
     
    5/8" ID × 1" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1098126A53800000
     
    3/4" ID × 1 1/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1098126A54100000
     
    7/8" ID × 1 3/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1098126A54400000
     
    1" ID × 1 1/2" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1098126A54700000
     
    1 1/8" ID × 1 5/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—598126A55000000
     
    1 1/4" ID × 1 3/4" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1098126A55300000
     
    1 3/8" ID × 1 7/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—598126A55600000
     
    1 1/2" ID × 2 1/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—598126A55900000
     
    1 3/4" ID × 2 3/4" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—198126A5620000
     
    2" ID × 2 3/4" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—198126A5650000
     
    Highly Corrosion-Resistant 316 Stainless Steel
     
    3/32" ID × 13/64" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B90——1090917A34100000
     
    1/8" ID × 3/16" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B90——1090917A43100000
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—597022A8790000
     
    3/16" ID × 1/4" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B90——1090917A53100000
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—597022A8810000
     
    1/4" ID × 3/8" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B90——1090917A63100000
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1097022A0380000
     
    5/16" ID × 1/2" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B90——1090917A73100000
     
    5/16" ID × 19/32" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1097022A6130000
     
    11/32" ID × 13/16" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1097022A0440000
     
    3/8" ID × 9/16" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B90——1090917A83100000
     
    3/8" ID × 5/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1097022A4250000
     
    1/2" ID × 3/4" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B90——1090917A93100000
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1097022A4270000
     
    5/8" ID × 1" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1097022A42900000
     
    3/4" ID × 1 1/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—597022A43100000
     
    7/8" ID × 1 3/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1097022A04700000
     
    1" ID × 1 1/2" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—597022A43500000
     
    1 1/8" ID × 1 5/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1097022A04900000
     
    1 1/4" ID × 1 3/4" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—1097022A05200000
     
    1 3/8" ID × 1 7/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—597022A0570000
     
    1 1/2" ID × 2 1/8" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—597022A0600000
     
    1 3/4" ID × 2 3/4" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—597022A0630000
     
    2" ID × 2 3/4" OD
    0.016"-0.002" to 0.002"0" to 0.011"-0.002" to 0.002"Rockwell B70ASTM A240—597022A0660000
     
    Aluminum
     
    1/4" ID × 3/8" OD
    0.016"-0.0015" to 0.0015"0" to 0.011"-0.002" to 0.002"Not Rated——1092661A6220000
     
    3/8" ID × 5/8" OD
    0.016"-0.0015" to 0.0015"0" to 0.011"-0.002" to 0.002"Not Rated——1092661A62500000
     
    1/2" ID × 3/4" OD
    0.016"-0.0015" to 0.0015"0" to 0.011"-0.002" to 0.002"Not Rated——1092661A62700000
     
    5/8" ID × 1" OD
    0.016"-0.0015" to 0.0015"0" to 0.011"-0.002" to 0.002"Not Rated——1092661A62900000
     
    3/4" ID × 1 1/8" OD
    0.016"-0.0015" to 0.0015"0" to 0.011"-0.002" to 0.002"Not Rated——1092661A63100000
     
    1" ID × 1 1/2" OD
    0.016"-0.0015" to 0.0015"0" to 0.011"-0.002" to 0.002"Not Rated——1092661A63500000
     
    Brass
     
    3/32" ID × 13/64" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70—Material Certificate
    		1093268A2110000
     
    1/8" ID × 3/16" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——1093268A3110000
     
    3/16" ID × 1/4" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——1093268A4110000
     
    1/4" ID × 3/8" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——1093268A51100000
     
    5/16" ID × 1/2" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——1093268A61100000
     
    3/8" ID × 9/16" OD
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——1093268A71100000
     
    3/8" ID × 5/8" OD
    0.016"-0.0025" to 0.0025"0" to 0.011"-0.002" to 0.002"Rockwell B60ASTM B36—1092678A32500000
     
    1/2" ID × 3/4" OD
    0.016"-0.0025" to 0.0025"0" to 0.011"-0.002" to 0.002"Rockwell B60ASTM B36—1092678A32700000
    0.016"-0.002" to 0.002"0" to 0.005"-0.005" to 0.005"Rockwell B70——1093268A81100000
     
    5/8" ID × 1" OD
    0.016"-0.0025" to 0.0025"0" to 0.011"-0.002" to 0.002"Rockwell B60ASTM B36—1092678A32900000
     
    3/4" ID × 1 1/8" OD
    0.016"-0.0025" to 0.0025"0" to 0.011"-0.002" to 0.002"Rockwell B60ASTM B36—1092678A33100000
     
    1" ID × 1 1/2" OD
    0.016"-0.0025" to 0.0025"0" to 0.011"-0.002" to 0.002"Rockwell B60ASTM B36—592678A3350000
     
    Copper
     
    1/4" ID × 3/8" OD
    0.016"-0.001" to 0.001"0" to 0.011"-0.002" to 0.002"Not RatedASTM B152—1094397A52100000
     
    3/8" ID × 5/8" OD
    0.016"-0.001" to 0.001"0" to 0.011"-0.002" to 0.002"Not RatedASTM B152—1094397A52500000
     
    1/2" ID × 3/4" OD
    0.016"-0.001" to 0.001"0" to 0.011"-0.002" to 0.002"Not RatedASTM B152—1094397A52700000
     
    5/8" ID × 1" OD
    0.016"-0.001" to 0.001"0" to 0.011"-0.002" to 0.002"Not RatedASTM B152—1094397A52900000
     
    3/4" ID × 1 1/8" OD
    0.016"-0.001" to 0.001"0" to 0.011"-0.002" to 0.002"Not RatedASTM B152—1094397A53100000
     
    1" ID × 1 1/2" OD
    0.016"-0.001" to 0.001"0" to 0.011"-0.002" to 0.002"Not RatedASTM B152—594397A53500000
     

    Shims for Shortening Screw Shoulders

    Image of ProductInUse. Front orientation. Contains Annotated. Shims. Shoulder Shortening, Sold Individually, Round.
    Image of Product. Front orientation. Shims. Shoulder Shortening, Sold Individually, Round.
    Pare down the shoulder on shoulder screws. Slide these shims under the screw head to create the length you need. Use them to tighten the hold on bearings, pulleys, and sprockets, or shorten the length of travel along the shoulder.
    You can stack multiple shims to achieve the exact shoulder length or space you need.
    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.
    Thk.
    Thk. Tolerance
    For Screw
    Size
    ID
    ID
    Tolerance
    OD
    OD Tolerance
    Min.
    Hardness
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    For 1/8" Diameter Shoulder
    0.016"-0.002" to 0.002"No. 4
    		1/8"0" to 0.012"1/4"-0.005" to 0.002"Rockwell B701094773A67900000
     
    For 3/16" Diameter Shoulder
    0.016"-0.002" to 0.002"No. 8
    		3/16"0" to 0.012"5/16"-0.005" to 0.002"Rockwell B701094773A6810000
     
    For 1/4" Diameter Shoulder
    0.016"-0.002" to 0.002"No. 10
    		1/4"0" to 0.012"3/8"-0.005" to 0.002"Rockwell B705094773A68300000
     
    For 5/16" Diameter Shoulder
    0.016"-0.002" to 0.002"1/4"
    		5/16"0" to 0.012"7/16"-0.005" to 0.002"Rockwell B702594773A6860000
     
    For 3/8" Diameter Shoulder
    0.016"-0.002" to 0.002"5/16"
    		3/8"0" to 0.012"9/16"-0.005" to 0.002"Rockwell B702594773A68800000
     
    For 1/2" Diameter Shoulder
    0.016"-0.002" to 0.002"3/8"
    		1/2"0" to 0.012"3/4"-0.005" to 0.002"Rockwell B702594773A68900000
     
    For 5/8" Diameter Shoulder
    0.016"-0.002" to 0.002"1/2"
    		5/8"0" to 0.012"7/8"-0.005" to 0.002"Rockwell B702594773A69100000
     
    For 3/4" Diameter Shoulder
    0.016"-0.002" to 0.002"5/8"
    		3/4"0" to 0.012"1"-0.005" to 0.002"Rockwell B701094773A69300000
     

    Peel-Away Multilayer Shim Stock

    Image of ProductInUse. Front orientation. Shim Stock. Sold Individually, Peel Away, Multilayer.
    Fine-tune thickness without worrying about stacking multiple shims. Cut the shim stock into custom shapes that suit your needs. It's made of layers of material bonded with adhesive—peel off the layers with a utility knife until you reach your desired thickness. To make peeling easier, warm the created shims to soften the adhesive. With thickness tolerances as fine as a strand of hair, the shims will precisely align, space, and level components on dies, presses, and machinery.
    18-8 Stainless Steel—The choice for wet and outdoor areas because it resists rust. However, it will corrode or pit when exposed to salt water and chemicals.
    Carbon Steel—Best for dry areas since moisture will cause it to rust.
    Aluminum—An alternative to stainless steel for rust resistance but less hard so it may not retain its shape. One-third the weight of steel, it's often used in robotics and automation.
    Brass—Picked for its warm, polished look. Similar to 18-8 stainless steel, it resists rusting in wet and outdoor areas.
    Polyimide—Originally designed for military aircraft, it’s used in everything from aerospace to electronics where weight, electrical insulation, and precision are vital.
    Temper Rating—Choose half hard to create shims that you’ll need to bend or shape. Opt for full hard to make stronger shims that will maintain their shape under loads.
    Certificate
    Thk.
    Thk. Tolerance
    No. of
    Layers
    Layer
    Thk.
    Temper
    Rating
    Specs. Met
    Form
    Type
    Form
    Each
    18-8 Stainless Steel
     
    12" Wide × 12" Long
    0.016"-0.001" to 0.0015"80.002"—SAE AMS-DTL-22499Sheet——9718K43000000
     
    20" Wide × 24" Long
    0.016"-0.001" to 0.0015"80.002"—SAE AMS-DTL-22499Sheet——9718K13000000
     
    Carbon Steel
     
    12" Wide × 12" Long
    0.016"-0.001" to 0.0015"80.002"—SAE AMS-DTL-22499, Fed. Spec. QQ-S-698Sheet——9720K4200000
     
    20" Wide × 24" Long
    0.016"-0.001" to 0.0015"80.002"—SAE AMS-DTL-22499, Fed. Spec. QQ-S-698Sheet——9720K1400000
     
    Aluminum
     
    12" Wide × 12" Long
    0.016"-0.001" to 0.0015"50.003"Extra HardSAE AMS-DTL-22499Sheet——9574K6400000
    0.016"-0.001" to 0.0015"80.002"Extra HardSAE AMS-DTL-22499Sheet——9574K7500000
     
    Brass
     
    8" Wide × 24" Long
    0.016"-0.001" to 0.0015"80.002"1/2 HardSAE AMS-DTL-22499Sheet——9521K1400000
     
    Polyimide
     
    12" Wide × 12" Long
    0.016"-0.001" to 0.0015"80.002"—ASTM D5213, SAE AMS-DTL-22499SheetMaterial Certificate
    		Paper
    		3126N13000000
     

    Shims for Lengthening Screw Shoulders

    Image of ProductInUse. Front orientation. Contains Annotated. Shims. Round, Sold Individually, Shoulder Lengthening.
    Image of Product. Front orientation. Shims. Round, Sold Individually, Shoulder Lengthening.
    When shoulders come up short, use these shims to extend the shoulder length on your screw. Wiggle the shims over the threads and up to the existing shoulder to create the exact shoulder length you need. Use them to create more space for bearings, pulleys, and sprockets, or extend the length of travel along the shoulder.
    You can stack multiple shims to achieve the exact shoulder length or space you need.
    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.
    Thk.
    Thk. Tolerance
    For Screw
    Size
    ID
    ID
    Tolerance
    OD
    OD Tolerance
    Min.
    Hardness
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
     
    For 1/4" Diameter Shoulder
    0.016"-0.002" to 0.002"No. 10
    		0.171"0" to 0.011"0.241"-0.002" to 0.002"Rockwell B705090135A443000000
     
    For 5/16" Diameter Shoulder
    0.016"-0.002" to 0.002"1/4"
    		0.234"0" to 0.011"0.303"-0.002" to 0.002"Rockwell B702590135A4450000
     
    For 3/8" Diameter Shoulder
    0.016"-0.002" to 0.002"5/16"
    		0.289"0" to 0.011"0.365"-0.002" to 0.002"Rockwell B702590135A44700000
     
    For 1/2" Diameter Shoulder
    0.016"-0.002" to 0.002"3/8"
    		0.352"0" to 0.011"0.491"-0.002" to 0.002"Rockwell B702590135A44900000
     
    For 5/8" Diameter Shoulder
    0.016"-0.002" to 0.002"1/2"
    		0.473"0" to 0.011"0.616"-0.002" to 0.002"Rockwell B702590135A45100000
     
    Highly Corrosion-Resistant 316 Stainless Steel
     
    For 1/4" Diameter Shoulder
    0.016"-0.002" to 0.002"No. 10
    		0.171"0" to 0.011"0.241"-0.002" to 0.002"Rockwell B701091017A55600000
     
    For 5/16" Diameter Shoulder
    0.016"-0.002" to 0.002"1/4"
    		0.234"0" to 0.011"0.303"-0.002" to 0.002"Rockwell B701091017A56400000
     
    For 3/8" Diameter Shoulder
    0.016"-0.002" to 0.002"5/16"
    		0.289"0" to 0.011"0.365"-0.002" to 0.002"Rockwell B701091017A56900000
     
    For 1/2" Diameter Shoulder
    0.016"-0.002" to 0.002"3/8"
    		0.352"0" to 0.011"0.491"-0.002" to 0.002"Rockwell B701091017A57500000
     

    Shim Stock

    Image of Product. Front orientation. Shim Stock. Sold Individually.
    Cut into custom shapes to create shims that suit your needs. With thickness tolerances as fine as a strand of hair, the shims will precisely align, space, and level components on dies, presses, 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.
    Stress-Resistant Spring Steel—Harder and holds its shape better than carbon steel. Use it for high-stress applications, such as leveling heavy machinery. It's best for dry areas since moisture will cause it to rust.
    Bronze—The choice for marine environments, it won't rust or deteriorate from exposure to salt water. It offers better corrosion resistance than 316 stainless steel but isn't as strong.
    Temper Rating—Choose half hard to create shims that you’ll need to bend or shape. Opt for full hard to make stronger shims that will maintain their shape under loads.
    Certificate
    Thk.
    Thk. Tolerance
    Temper
    Rating
    Specs. Met
    Form
    Type
    Form
    Each
    Stress-Resistant Spring Steel
     
    6" Wide × 25" Long
    0.016"-0.001" to 0.001"Full HardASTM A684, SAE AMS5122SheetMaterial Certificate
    		Paper
    		9014K153000000
     
    6" Wide × 50" Long
    0.016"-0.001" to 0.001"Full HardASTM A682, ASTM A684, MIL-S-7947RollMaterial Certificate
    		Paper
    		9503K4500000
     
    8" Wide × 12" Long
    0.016"-0.001" to 0.001"Full HardASTM A684, SAE AMS5122SheetMaterial Certificate
    		Paper
    		9014K16400000
     
    Bronze
     
    6" Wide × 25" Long
    0.016"-0.001" to 0.001"SpringASTM B103, SAE AMS4510SheetMaterial Certificate
    		Paper
    		9014K31300000
     
    6" Wide × 50" Long
    0.016"-0.001" to 0.001"SpringASTM B103RollMaterial Certificate
    		Paper
    		9020K1500000
     

    Wave Spring Lock Washers

    Image of Product. Front orientation. Lock Washers. Spring Lock Washer, Wave Washer.
    The wavy shape flexes like a spring to keep nuts and screws secure on slightly uneven surfaces. These washers add a small amount of tension to stop fasteners from backing out due to mild vibration. While they don't hold as well as other lock washers, they do grip slightly better than curved washers. They work best in electrical panels, light fixtures, and other light duty assemblies. Since these washers hold their shape when untightened, you can reuse them a handful of times without losing strength.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
    3 Wave—More points of contact than single-wave washers for a better grip.
    For Screw
    Size
    No. of
    Waves
    ID
    OD
    Thk.
    Overall
    Ht.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    1 1/2"
    		31.560"2.380"0.016"0.100"190881A11600000
     

    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.
    Material Certificate—Shims include a report with a traceable lot number.
    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.
    Certificate Type
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    0.016"-0.0008" to 0.0008"80.002"Rockwell B80ASTM A240—Material Certificate
    		1611885N3680000000411885N3750000000911885N3820000000411885N3880000000111885N3950000000
     
    Carbon Steel
    0.016"-0.0008" to 0.0008"80.002"Rockwell B54—Fed. Spec. QQ-S-698Material Certificate
    		1611885N40200000411885N40800000911885N415000000411885N422000000111885N428000000
     
    Aluminum
    0.016"-0.0008" to 0.0008"80.002"Not RatedASTM B209, SAE AMS-DTL-22499—Material Certificate
    		1611885N43500000411885N44200000911885N448000000411885N455000000111885N462000000
     
    Brass
    0.016"-0.0008" to 0.0008"80.002"Not RatedASTM B36—Material Certificate
    		1611885N468000000411885N475000000911885N482000000411885N488000000111885N495000000
     

    Insulating Sleeve Washers

    Cover screw threads to stop electrical current in its tracks and prevent short circuits. These washers create a barrier between the screw threads and the mating surface when mounted in through holes. This barrier also extends the life of your assembly by preventing galvanic corrosion, which is when two different metals rust more quickly due to contact with each other.
    Flat Edge
    Image of Product. Front orientation. Insulating Washers. Insulating Sleeve Washers, Flat Edge.
    The flat edge distributes weight evenly to take pressure off screw heads.
    Nylon—Our most versatile insulating washers, these block unwanted current in everything from switches and circuit breakers to control panels and electric motors.
    Sleeve
    Temp.
    Range, ° F
    For Screw
    Size
    Ht.
    OD
    ID
    OD
    Thk.
    Overall
    Ht.
    Min.
    Max.
    Color
    Pkg.
    Qty.
    Pkg.
    Nylon
    1/4"
    		0.078"0.312"0.255"0.464"0.016"0.094"-40180Off-White10091145A254000000
     
    back to top