System of Measurement System of Measurement |
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For Screw Size For Screw Size |
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Finish Finish |
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ID ID |
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OD OD |
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Thickness Thickness |
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Washer Type Washer Type |
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 | Flat |
Hardness Hardness |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Specifications Met Specifications Met |
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Color Color |
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 | Black |
About Washers
More
General Purpose Washers
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel and 17-7 PH stainless steel washers have good chemical resistance and may be mildly magnetic. 17-7 PH stainless steel washers are stronger than 18-8 stainless steel washers. Black-oxide 18-8 stainless steel washers have a matte-black finish.
Alloy 20 stainless steel washers have extreme corrosion resistance for use in marine environments and chemical-processing plants. They may be mildly magnetic.
A286 stainless steel washers withstand high temperatures. They have good chemical resistance and may be mildly magnetic.
Zinc yellow-chromate and chrome-plated steel washers are corrosion resistant in wet environments.
Black corrosion-resistant-coated steel washers resist chemicals and withstand 1,000 hours of salt spray.
Aluminum washers are lightweight and corrosion resistant in wet environments.
Copper, brass, and bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive. Bronze washers are stronger than copper and brass.
Titanium washers are extremely corrosion resistant for use in marine environments and chemical-processing plants. They may be mildly magnetic.
400 nickel washers have excellent resistance to salt water and some acids. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 000 | 0.040" | 0.078" | 0.010"-0.020" | Not Rated | __ | 50 | 000000000 | 000000 |
| No. 00 | 0.050" | 0.109" | 0.010"-0.020" | Not Rated | __ | 50 | 000000000 | 00000 |
| No. 0 | 0.062" | 0.156" | 0.018"-0.032" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 1 | 0.080" | 0.156" | 0.010"-0.020" | Not Rated | __ | 50 | 000000000 | 00000 |
| No. 2 | 0.094" | 0.250" | 0.018"-0.032" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 3 | 0.109" | 0.250" | 0.018"-0.032" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.024"-0.038" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 5 | 0.141" | 0.281" | 0.025"-0.039" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.024"-0.038" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 8 | 0.174" | 0.375" | 0.024"-0.038" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.438" | 0.024"-0.038" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 12 | 0.234" | 0.500" | 0.033"-0.047" | Not Rated | __ | 100 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.043"-0.057" | Not Rated | __ | 100 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.750" | 0.043"-0.057" | Not Rated | __ | 100 | 000000000 | 00000 |
| 3/8" | 0.406" | 0.750" | 0.040"-0.060" | Not Rated | __ | 25 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.125" | 0.055"-0.069" | Not Rated | __ | 25 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.250" | 0.055"-0.069" | Not Rated | __ | 25 | 000000000 | 00000 |
| 9/16" | 0.578" | 1.062" | 0.055"-0.085" | Not Rated | __ | 25 | 000000000 | 0000 |
| 5/8" | 0.688" | 1.500" | 0.071"-0.085" | Not Rated | __ | 10 | 000000000 | 0000 |
| 3/4" | 0.812" | 1.500" | 0.060"-0.090" | Not Rated | __ | 10 | 000000000 | 00000 |
| 7/8" | 0.938" | 2.000" | 0.094"-0.116" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1" | 1.062" | 2.000" | 0.118"-0.132" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1 1/8" | 1.188" | 2.500" | 0.118"-0.132" | Not Rated | __ | 1 | 000000000 | 0000 |
| 1 1/4" | 1.312" | 2.750" | 0.118"-0.132" | Not Rated | __ | 1 | 000000000 | 0000 |
| 1 3/8" | 1.500" | 2.750" | 0.100"-0.180" | Not Rated | __ | 1 | 000000000 | 0000 |
| 1 1/2" | 1.562" | 3.000" | 0.100"-0.180" | Not Rated | __ | 1 | 000000000 | 0000 |
| 1 3/4" | 1.812" | 3.500" | 0.133"-0.147" | Not Rated | __ | 1 | 000000000 | 0000 |
| 2" | 2.125" | 4.000" | 0.180"-0.194" | Not Rated | __ | 1 | 000000000 | 0000 |
| 2 1/4" | 2.375" | 4.500" | 0.210"-0.280" | Not Rated | __ | 1 | 000000000 | 00000 |
| 2 1/2" | 2.625" | 4.500" | 0.210"-0.280" | Not Rated | __ | 1 | 000000000 | 00000 |
| 2 3/4" | 2.875" | 5.000" | 0.228"-0.310" | Not Rated | __ | 1 | 000000000 | 00000 |
| 3" | 3.125" | 5.000" | 0.228"-0.310" | Not Rated | __ | 1 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||
| No. 000 | 0.040" | 0.078" | 0.010"-0.020" | Not Rated | __ | 50 | 000000000 | 00000 |
| No. 00 | 0.050" | 0.109" | 0.010"-0.020" | Not Rated | __ | 50 | 000000000 | 0000 |
| No. 0 | 0.062" | 0.125" | 0.005"-0.024" | Rockwell B83 | __ | 25 | 000000000 | 0000 |
| No. 1 | 0.080" | 0.156" | 0.010"-0.020" | Not Rated | __ | 50 | 000000000 | 0000 |
| No. 2 | 0.094" | 0.250" | 0.018"-0.032" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 3 | 0.109" | 0.250" | 0.018"-0.032" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.025"-0.040" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 5 | 0.141" | 0.281" | 0.025"-0.040" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.025"-0.040" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 8 | 0.172" | 0.375" | 0.025"-0.040" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.438" | 0.025"-0.040" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 12 | 0.234" | 0.500" | 0.033"-0.057" | Not Rated | __ | 100 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.043"-0.057" | Not Rated | __ | 100 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.750" | 0.043"-0.057" | Not Rated | __ | 100 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.875" | 0.043"-0.057" | Not Rated | __ | 100 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.125" | 0.055"-0.069" | Not Rated | __ | 100 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.250" | 0.055"-0.069" | Not Rated | __ | 50 | 000000000 | 0000 |
| 9/16" | 0.578" | 1.062" | 0.050"-0.080" | Not Rated | __ | 50 | 000000000 | 0000 |
| 5/8" | 0.688" | 1.500" | 0.071"-0.085" | Not Rated | __ | 25 | 000000000 | 0000 |
| 3/4" | 0.812" | 1.750" | 0.099"-0.119" | Not Rated | __ | 10 | 000000000 | 0000 |
| 7/8" | 0.938" | 2.000" | 0.102"-0.116" | Not Rated | __ | 10 | 000000000 | 0000 |
| 1" | 1.062" | 2.000" | 0.118"-0.132" | Not Rated | __ | 10 | 000000000 | 0000 |
| 1 1/8" | 1.188" | 2.500" | 0.118"-0.132" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1 1/4" | 1.312" | 2.750" | 0.118"-0.132" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1 3/8" | 1.500" | 3.250" | 0.133"-0.147" | Not Rated | __ | 5 | 000000000 | 00000 |
| 1 1/2" | 1.562" | 3.250" | 0.133"-0.147" | Not Rated | __ | 5 | 000000000 | 00000 |
| 1 3/4" | 1.812" | 3.500" | 0.133"-0.147" | Not Rated | __ | 1 | 000000000 | 0000 |
| 2" | 2.125" | 4.000" | 0.180"-0.194" | Not Rated | __ | 1 | 000000000 | 0000 |
| 2 1/4" | 2.375" | 4.500" | 0.210"-0.280" | Not Rated | __ | 1 | 000000000 | 00000 |
| 2 1/2" | 2.625" | 4.500" | 0.297"-0.328" | Rockwell B83 | __ | 1 | 000000000 | 00000 |
| 2 3/4" | 2.875" | 5.000" | 0.228"-0.310" | Not Rated | __ | 1 | 000000000 | 00000 |
| 3" | 3.125" | 5.000" | 0.228"-0.310" | Not Rated | __ | 1 | 000000000 | 00000 |
17-7 PH Stainless Steel | ||||||||
| No. 0 | 0.062" | 0.156" | 0.018"-0.032" | Rockwell C40 | __ | 10 | 000000000 | 00000 |
| No. 2 | 0.094" | 0.312" | 0.018"-0.032" | Rockwell C40 | __ | 10 | 000000000 | 00000 |
| No. 3 | 0.109" | 0.281" | 0.018"-0.032" | Rockwell C40 | __ | 10 | 000000000 | 00000 |
| No. 4 | 0.125" | 0.312" | 0.024"-0.038" | Rockwell C40 | __ | 5 | 000000000 | 00000 |
| No. 5 | 0.141" | 0.281" | 0.025"-0.039" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.024"-0.038" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
| No. 8 | 0.174" | 0.375" | 0.024"-0.038" | Rockwell C40 | __ | 5 | 000000000 | 00000 |
| No. 10 | 0.203" | 0.438" | 0.024"-0.038" | Rockwell C40 | __ | 5 | 000000000 | 00000 |
| 1/4" | 0.312" | 0.750" | 0.058"-0.068" | Rockwell C40 | __ | 10 | 000000000 | 0000 |
| 5/16" | 0.375" | 0.875" | 0.073"-0.083" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 0000 |
| 3/8" | 0.438" | 1.000" | 0.073"-0.083" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.250" | 0.073"-0.083" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1/2" | 0.562" | 1.375" | 0.073"-0.083" | Rockwell C40 | __ | 1 | 000000000 | 0000 |
| 9/16" | 0.625" | 1.500" | 0.085"-0.095" | Rockwell C40 | __ | 1 | 000000000 | 0000 |
| 5/8" | 0.688" | 1.750" | 0.120"-0.141" | Rockwell C40 | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.812" | 2.000" | 0.120"-0.141" | Rockwell C40 | __ | 1 | 000000000 | 00000 |
| 1" | 1.062" | 2.000" | 0.120"-0.141" | Rockwell C40 | ASME B18.21.1 | 1 | 000000000 | 00000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
| No. 000 | 0.040" | 0.078" | 0.010"-0.020" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 00 | 0.053" | 0.109" | 0.010"-0.020" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 0 | 0.062" | 0.156" | 0.010"-0.040" | Rockwell B68 | __ | 50 | 000000000 | 00000 |