System of Measurement System of Measurement |
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Thickness Thickness | Show |
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Thickness Thickness | Hide |
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Shape Shape |
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Material Material |
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Magnetic Properties Magnetic Properties |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Individual/Set Individual/Set |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Washer Type Washer Type |
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| Sleeve | Split Lock |
Finish Finish |
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Hardness Hardness |
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Specifications Met Specifications Met |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Overall Height Overall Height |
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Maximum Temperature Maximum Temperature |
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Minimum Temperature Minimum Temperature |
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Color Color |
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About Washers
More
Ring Shims

Precisely align, level, and adjust spacing on fasteners, shafts, and machinery with these shims.
For accurate leveling, choose materials such as steel or stainless steel, which are hard enough to resist scratching and deforming. Softer shims, like copper or aluminum, can be used as wear plates between components that rub together, preventing damage to equipment.
Carbon steel shims have excellent strength and can be welded, but aren't as corrosion resistant as other shims.
For technical drawings and 3-D models, click on a part number.
| ID | ID Tolerance | OD | OD Tolerance | Material | Min. Hardness | Pkg. Qty. | Pkg. | |
0.188" Thick. (-0.007" to 0.007" Tolerance) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0" to 0.011" | 3/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 000000 |
| 11/32" | 0" to 0.011" | 13/16" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 0000000 | 00000 |
| 3/8" | 0" to 0.011" | 5/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1/2" | 0" to 0.011" | 3/4" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 5/8" | 0" to 0.011" | 1" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 3/4" | 0" to 0.011" | 1 1/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1" | 0" to 0.011" | 1 1/2" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1 1/8" | 0" to 0.011" | 1 5/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 000000 | 00000 |
| 1 1/4" | 0" to 0.011" | 1 3/4" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1 3/8" | 0" to 0.011" | 1 7/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
| 1 1/2" | 0" to 0.011" | 2 1/8" | -0.01" to 0.01" | 1008-1010 Carbon Steel | Rockwell B65 | 1 | 00000000 | 00000 |
Electrical-Insulating Sleeve Washers

Also known as shoulder or insulator washers, these nonmetal washers block electrical current and prevent galvanic corrosion from mating different types of metal.
Ceramic washers withstand high temperatures and resist moisture as well as hydrochloric and nitric acid gases.
For technical drawings and 3-D models, click on a part number.
Temperature Range, °F | |||||||||||
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| For Screw Size | ID | OD | Sleeve OD | Thick. | Overall Ht. | Min. | Max. | Color | Pkg. Qty. | Pkg. | |
Ceramic | |||||||||||
| 1/4" | 0.265" | 0.875" | 0.593" | 0.188" | 0.250" | Not Rated | 1700° | Off-White | 5 | 000000000 | 000000 |
Split Lock Washers

As a screw is tightened, these washers flatten to add tension to the joint and prevent loosening from small amounts of vibration.
Black-oxide steel washers are mildly corrosion resistant in dry environments.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
Zinc- and zinc yellow-chromate plated steel washers are corrosion resistant in wet environments.
Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc- and zinc yellow-chromate plated washers.
Zinc-flake-coated steel washers are 40 times as corrosion resistant as zinc-plated washers and comparable to Magni-coated washers.
Aluminum washers are lightweight and corrosion resistant in wet environments.
Bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Washers that meet ASME B18.21.1 adhere to strict dimensional standards. Steel washers also meet standards for material properties.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Carbon Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C38 | ASME B18.21.1 | 5 | 00000000 | 00000 |
316 Stainless Steel | ||||||||
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C35 | ASME B18.21.1 | 10 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C35 | ASME B18.21.1 | 10 | 000000000 | 0000 |
Zinc-Plated Steel | ||||||||
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C38 | ASME B18.21.1 | 50 | 000000000 | 00000 |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C38 | ASME B18.21.1 | 25 | 000000000 | 00000 |
Hot-Dipped Galvanized Steel | ||||||||
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C38 | ASME B18.21.1 | 25 | 000000000 | 00000 |
Zinc Flake Coated | ||||||||
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C38 | ASME B18.21.1 | 1 | 00000000 | 0000 |
Steel | ||||||||
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C38 | ASME B18.21.1 | 50 | 000000000 | 00000 |
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C38 | ASME B18.21.1 | 500 | 000000000 | 000000 |
Aluminum | ||||||||
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell B87 | ASME B18.21.1 | 10 | 000000000 | 00000 |
Bronze | ||||||||
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell B90 | ASME B18.21.1 | 5 | 000000000 | 00000 |
Mil. Spec. Split Lock Washers

Choose these washers for their adherence to strict military standards for material and construction. As a screw is tightened, they flatten to add tension to the joint and prevent loosening from small amounts of vibration.
18-8 stainless steel washers have excellent corrosion resistance in most environments. They may be mildly magnetic.
Passivated stainless steel washers have added protection against oxidation and corrosion.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Passivated 18-8 Stainless Steel | ||||||||
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MS35338 | ||||||||
| 3/4" | 0.766" | 1.264" | 0.188" | Rockwell C35 | ASME B18.21.1; MS35338-146 | 5 | 000000000 | 000000 |



























