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Minimum Thickness Minimum Thickness |
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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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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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About Washers
More
Oversized Washers
Compared to our general purpose washers, these have exaggerated diameters and/or thicknesses for covering oversized holes or for use as spacers and levelers.
18-8 stainless steel and 17-4 PH stainless steel washers have good chemical resistance and may be mildly magnetic. 17-4 PH stainless steel washers are stronger than 18-8 stainless steel washers. Black-oxide steel washers have mild corrosion resistance in dry environments.
Brass washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Black ultra-corrosion-resistant coated steel washers resist chemicals and withstand 1,000 hours of salt spray. They’re also known as black luster washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.078" | 0.156" | 0.005"-0.024" | Rockwell B83 | __ | 25 | 000000000 | 00000 |
| No. 2 | 0.094" | 0.188" | 0.014"-0.033" | Rockwell B83 | __ | 25 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.250" | 0.049"-0.068" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.064"-0.083" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.049"-0.068" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.375" | 0.064"-0.083" | Rockwell B83 | __ | 5 | 000000000 | 0000 |
| No. 8 | 0.172" | 0.375" | 0.049"-0.068" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.438" | 0.064"-0.083" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.500" | 0.080"-0.099" | Rockwell B83 | __ | 5 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.500" | 0.064"-0.083" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.105"-0.130" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.168"-0.193" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.625" | 0.079"-0.098" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.688" | 0.105"-0.130" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.750" | 0.105"-0.130" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.750" | 0.168"-0.193" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.750" | 0.079"-0.098" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.875" | 0.105"-0.130" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| 3/8" | 0.406" | 1.000" | 0.105"-0.130" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| 3/8" | 0.406" | 1.000" | 0.168"-0.193" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 7/16" | 0.469" | 0.922" | 0.105"-0.130" | Rockwell B83 | __ | 10 | 000000000 | 00000 |
| 7/16" | 0.469" | 1.000" | 0.105"-0.130" | Rockwell B83 | __ | 5 | 000000000 | 0000 |
| 7/16" | 0.469" | 1.000" | 0.168"-0.193" | Rockwell B83 | __ | 5 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.062" | 0.168"-0.192" | Rockwell B83 | __ | 10 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.125" | 0.105"-0.130" | Rockwell B83 | __ | 5 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.125" | 0.168"-0.193" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 9/16" | 0.594" | 1.188" | 0.168"-0.193" | Rockwell B83 | __ | 5 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.312" | 0.198"-0.223" | Rockwell B83 | __ | 5 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.375" | 0.105"-0.130" | Rockwell B83 | __ | 5 | 000000000 | 00000 |
| 5/8" | 0.656" | 1.375" | 0.168"-0.193" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.781" | 1.625" | 0.136"-0.161" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.781" | 1.625" | 0.230"-0.255" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.812" | 1.500" | 0.198"-0.223" | Rockwell B83 | __ | 5 | 000000000 | 00000 |
| 7/8" | 0.906" | 1.750" | 0.136"-0.161" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 7/8" | 0.906" | 1.750" | 0.230"-0.255" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 1" | 1.031" | 2.000" | 0.168"-0.193" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 1" | 1.031" | 2.000" | 0.230"-0.255" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 1" | 1.031" | 2.000" | 0.261"-0.286" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 1 1/8" | 1.156" | 2.250" | 0.199"-0.224" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
| 1 1/4" | 1.281" | 2.500" | 0.261"-0.286" | Rockwell B83 | __ | 1 | 000000000 | 0000 |
17-4 PH Stainless Steel | ||||||||
| 1/4" | 0.281" | 0.625" | 0.105"-0.130" | Rockwell C35 | __ | 1 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.177"-0.197" | Rockwell C35 | __ | 1 | 000000000 | 0000 |
| 1/4" | 0.313" | 0.750" | 0.068"-0.088" | Rockwell C35 | __ | 1 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.750" | 0.105"-0.130" | Rockwell C35 | __ | 1 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.875" | 0.105"-0.130" | Rockwell C35 | __ | 1 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.125" | 0.105"-0.130" | Rockwell C35 | __ | 1 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.125" | 0.177"-0.197" | Rockwell C35 | __ | 1 | 000000000 | 00000 |
| 5/8" | 0.656" | 1.375" | 0.105"-0.130" | Rockwell C35 | __ | 1 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.375" | 0.177"-0.197" | Rockwell C35 | __ | 1 | 000000000 | 00000 |
| 3/4" | 0.781" | 1.625" | 0.136"-0.161" | Rockwell C35 | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.781" | 1.625" | 0.235"-0.255" | Rockwell C35 | __ | 1 | 000000000 | 00000 |
| 7/8" | 0.906" | 1.750" | 0.136"-0.161" | Rockwell C35 | __ | 1 | 000000000 | 00000 |
| 1" | 1.031" | 2.000" | 0.271"-0.291" | Rockwell C35 | __ | 1 | 000000000 | 00000 |
Black-Oxide Steel | ||||||||
| No. 0 | 0.062" | 0.125" | 0.005"-0.024" | Not Rated | __ | 25 | 000000000 | 0000 |
| No. 1 | 0.078" | 0.156" | 0.005"-0.024" | Not Rated | __ | 25 | 000000000 | 0000 |
| No. 2 | 0.094" | 0.188" | 0.014"-0.033" | Not Rated | __ | 25 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.250" | 0.049"-0.068" | Not Rated | __ | 25 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.068"-0.088" | Rockwell 15N85 | __ | 25 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.049"-0.068" | Not Rated | __ | 25 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.375" | 0.068"-0.088" | Rockwell 15N85 | __ | 25 | 000000000 | 0000 |
| No. 8 | 0.172" | 0.375" | 0.049"-0.068" | Not Rated | __ | 25 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.438" | 0.068"-0.088" | Rockwell 15N85 | __ | 25 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.500" | 0.080"-0.099" | Not Rated | __ | 25 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.500" | 0.064"-0.083" | Not Rated | __ | 25 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.105"-0.130" | Not Rated | __ | 25 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.168"-0.193" | Not Rated | __ | 10 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.750" | 0.130"-0.150" | Not Rated | __ | 10 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.625" | 0.079"-0.098" | Not Rated | __ | 25 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.688" | 0.105"-0.130" | Not Rated | __ | 25 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.750" | 0.105"-0.130" | Not Rated | __ | 25 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.750" | 0.168"-0.193" | Not Rated | __ | 10 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.875" | 0.130"-0.150" | Not Rated | __ | 10 | 000000000 | 00000 |
| 3/8" | 0.406" | 0.750" | 0.079"-0.098" | Not Rated | __ | 25 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.875" | 0.105"-0.130" | Not Rated | __ | 25 | 000000000 | 0000 |
| 3/8" | 0.406" | 1.000" | 0.105"-0.130" | Not Rated | __ | 10 | 000000000 | 0000 |
| 3/8" | 0.406" | 1.000" | 0.168"-0.193" | Not Rated | __ | 10 | 000000000 | 0000 |
| 7/16" | 0.469" | 1.000" | 0.105"-0.130" | Not Rated | __ | 25 | 000000000 | 0000 |
| 7/16" | 0.469" | 1.000" | 0.168"-0.193" | Not Rated | __ | 5 | 000000000 | 0000 |
| 7/16" | 0.469" | 1.250" | 0.168"-0.193" | Not Rated | __ | 5 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.062" | 0.168"-0.192" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.125" | 0.105"-0.130" | Not Rated | __ | 25 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.125" | 0.168"-0.193" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.375" | 0.146"-0.166" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.500" | 0.198"-0.233" | Not Rated | __ | 5 | 000000000 | 00000 |
| 5/8" | 0.656" | 1.312" | 0.198"-0.223" | Not Rated | __ | 1 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.375" | 0.105"-0.130" | Not Rated | __ | 10 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.375" | 0.168"-0.193" | Not Rated | __ | 5 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.500" | 0.198"-0.233" | Not Rated | __ | 1 | 000000000 | 0000 |
| 5/8" | 0.719" | 1.250" | 0.230"-0.255" | Not Rated | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.781" | 1.625" | 0.136"-0.161" | Not Rated | __ | 10 | 000000000 | 0000 |
| 3/4" | 0.781" | 1.625" | 0.230"-0.255" | Not Rated | __ | 5 | 000000000 | 0000 |
| 3/4" | 0.781" | 1.875" | 0.230"-0.255" | Not Rated | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.812" | 1.500" | 0.198"-0.223" | Not Rated | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.844" | 1.500" | 0.230"-0.255" | Not Rated | __ | 1 | 000000000 | 0000 |
| 7/8" | 0.906" | 1.750" | 0.136"-0.161" | Not Rated | __ | 5 | 000000000 | 0000 |
| 7/8" | 0.906" | 1.750" | 0.230"-0.255" | Not Rated | __ | 5 | 000000000 | 00000 |
| 7/8" | 0.906" | 1.828" | 0.230"-0.255" | Not Rated | __ | 1 | 000000000 | 0000 |
| 7/8" | 0.906" | 2.125" | 0.293"-0.318" | Not Rated | __ | 1 | 000000000 | 0000 |
| 1" | 1.031" | 2.000" | 0.168"-0.193" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1" | 1.031" | 2.000" | 0.230"-0.255" | Not Rated | __ | 1 | 000000000 | 0000 |
| 1" | 1.031" | 2.000" | 0.261"-0.286" | Not Rated | __ | 1 | 000000000 | 0000 |
| 1" | 1.063" | 2.500" | 0.293"-0.318" | Not Rated | __ | 1 | 000000000 | 0000 |
| 1 1/8" | 1.156" | 2.250" | 0.199"-0.224" | Not Rated | __ | 1 | 000000000 | 0000 |
| 1 1/4" | 1.281" | 2.500" | 0.271"-0.291" | Rockwell 15N85 | __ | 1 | 000000000 | 0000 |
| 1 1/2" | 1.563" | 2.750" | 0.355"-0.380" | Not Rated | __ | 1 | 000000000 | 00000 |
Brass | ||||||||
| No. 2 | 0.094" | 0.188" | 0.014"-0.033" | Rockwell B60 | __ | 25 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.250" | 0.049"-0.068" | Rockwell B60 | __ | 10 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.049"-0.068" | Rockwell B60 | __ | 10 | 000000000 | 0000 |
| No. 8 | 0.172" | 0.375" | 0.049"-0.068" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.438" | 0.064"-0.083" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.500" | 0.079"-0.099" | Rockwell B60 | __ | 5 | 000000000 | 00000 |
| 1/4" | 0.281" | 0.500" | 0.064"-0.083" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.105"-0.130" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.167"-0.193" | Rockwell B60 | __ | 5 | 000000000 | 00000 |
| 5/16" | 0.344" | 0.625" | 0.079"-0.098" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.688" | 0.105"-0.130" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.750" | 0.105"-0.130" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| 5/16" | 0.344" | 0.750" | 0.167"-0.193" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.750" | 0.079"-0.098" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.875" | 0.105"-0.130" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| 3/8" | 0.406" | 1.000" | 0.105"-0.130" | Rockwell B60 | __ | 5 | 000000000 | 0000 |
| 3/8" | 0.406" | 1.000" | 0.167"-0.193" | Rockwell B60 | __ | 5 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.062" | 0.167"-0.192" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.125" | 0.105"-0.130" | Rockwell B60 | __ | 5 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.125" | 0.167"-0.193" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.312" | 0.198"-0.223" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.375" | 0.105"-0.130" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.375" | 0.167"-0.193" | Rockwell B60 | __ | 5 | 000000000 | 00000 |
| 3/4" | 0.781" | 1.625" | 0.136"-0.161" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.781" | 1.625" | 0.230"-0.255" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.812" | 1.500" | 0.198"-0.223" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 7/8" | 0.906" | 1.750" | 0.136"-0.161" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 7/8" | 0.906" | 1.750" | 0.230"-0.255" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 1" | 1.031" | 2.000" | 0.167"-0.193" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
| 1" | 1.031" | 2.000" | 0.261"-0.286" | Rockwell B60 | __ | 1 | 000000000 | 0000 |
Black Ultra-Corrosion-Resistant Coated Steel | ||||||||
| 1/4" | 0.313" | 0.750" | 0.090"-0.110" | Rockwell C38 | USS Standards | 5 | 000000000 | 0000 |
| 5/16" | 0.375" | 0.875" | 0.090"-0.110" | Rockwell C38 | USS Standards | 5 | 000000000 | 0000 |
| 3/8" | 0.438" | 1.000" | 0.110"-0.126" | Rockwell C38 | USS Standards | 5 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.250" | 0.110"-0.126" | Rockwell C38 | USS Standards | 5 | 000000000 | 00000 |
| 1/2" | 0.563" | 1.375" | 0.156"-0.188" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
| 9/16" | 0.625" | 1.500" | 0.156"-0.188" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
| 5/8" | 0.688" | 1.750" | 0.170"-0.195" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
| 3/4" | 0.813" | 2.000" | 0.170"-0.195" | Rockwell C38 | USS Standards | 1 | 000000000 | 0000 |
| 7/8" | 0.938" | 2.250" | 0.235"-0.265" | Rockwell C38 | USS Standards | 1 | 000000000 | 00000 |
| 1" | 1.063" | 2.500" | 0.235"-0.265" | Rockwell C38 | USS Standards | 1 | 000000000 | 00000 |
General Purpose Washers
18-8 stainless steel and 17-7 PH stainless steel washers have good chemical resistance and may be mildly magnetic. Copper, brass, and bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
For technical drawings and 3-D models, click on a part number.