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.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
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 18-8 stainless steel washers have a matte-black finish.
Black-oxide steel washers have mild corrosion resistance in dry environments.
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.
Aluminum washers are lightweight and corrosion resistant in wet environments
Brass washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Black 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. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.078" | 0.188" | 0.018"-0.032" | Not Rated | __ | 100 | 000000000 | 00000 |
| No. 1 | 0.080" | 0.188" | 0.040"-0.060" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 2 | 0.094" | 0.312" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 3 | 0.109" | 0.312" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 4 | 0.125" | 0.344" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 4 | 0.125" | 0.375" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 5 | 0.141" | 0.375" | 0.025"-0.039" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 5 | 0.141" | 0.375" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 5 | 0.141" | 0.625" | 0.024"-0.038" | Rockwell B68 | __ | 25 | 000000000 | 0000 |
| No. 6 | 0.149" | 0.625" | 0.024"-0.038" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.438" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 6 | 0.156" | 0.500" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 6 | 0.156" | 0.562" | 0.040"-0.054" | Not Rated | __ | 50 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.750" | 0.036"-0.065" | Not Rated | __ | 25 | 000000000 | 0000 |
| No. 8 | 0.172" | 0.500" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 8 | 0.172" | 0.625" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 8 | 0.174" | 0.750" | 0.033"-0.047" | Not Rated | __ | 50 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.438" | 0.050"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 8 | 0.188" | 0.750" | 0.043"-0.057" | Not Rated | __ | 50 | 000000000 | 00000 |
| No. 8 | 0.188" | 1.000" | 0.036"-0.065" | Not Rated | __ | 10 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.500" | 0.033"-0.047" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.562" | 0.060"-0.090" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| No. 10 | 0.203" | 0.625" | 0.060"-0.090" | Rockwell B68 | __ | 25 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.688" | 0.033"-0.047" | Not Rated | __ | 100 | 000000000 | 00000 |
| No. 10 | 0.203" | 0.750" | 0.033"-0.047" | Not Rated | __ | 50 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.875" | 0.110"-0.140" | Rockwell B68 | __ | 25 | 000000000 | 00000 |
| No. 10 | 0.203" | 1.000" | 0.033"-0.047" | Not Rated | __ | 50 | 000000000 | 0000 |
| No. 10 | 0.219" | 1.250" | 0.043"-0.057" | Rockwell B68 | __ | 10 | 000000000 | 0000 |
| No. 10 | 0.219" | 1.500" | 0.036"-0.060" | Not Rated | __ | 10 | 000000000 | 00000 |
| No. 12 | 0.250" | 0.562" | 0.043"-0.057" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 12 | 0.250" | 0.750" | 0.060"-0.090" | Rockwell B68 | __ | 25 | 000000000 | 00000 |
| No. 12 | 0.250" | 1.000" | 0.060"-0.090" | Rockwell B68 | __ | 25 | 000000000 | 00000 |
| 1/4" | 0.266" | 0.500" | 0.043"-0.057" | Not Rated | __ | 100 | 000000000 | 0000 |
| 1/4" | 0.266" | 0.562" | 0.056"-0.070" | Not Rated | __ | 50 | 000000000 | 0000 |
| 1/4" | 0.266" | 0.875" | 0.056"-0.070" | Not Rated | __ | 25 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.110"-0.140" | Rockwell B68 | __ | 25 | 000000000 | 00000 |
| 1/4" | 0.281" | 0.625" | 0.170"-0.200" | Not Rated | __ | 5 | 000000000 | 00000 |
| 1/4" | 0.281" | 0.688" | 0.060"-0.090" | Rockwell B68 | __ | 25 | 000000000 | 00000 |
| 1/4" | 0.281" | 0.750" | 0.060"-0.090" | Rockwell B68 | __ | 25 | 000000000 | 00000 |
| 1/4" | 0.281" | 1.000" | 0.040"-0.060" | Not Rated | __ | 25 | 000000000 | 0000 |
| 1/4" | 0.281" | 1.250" | 0.040"-0.060" | Not Rated | __ | 25 | 000000000 | 0000 |
| 1/4" | 0.281" | 1.500" | 0.052"-0.072" | Not Rated | __ | 10 | 000000000 | 0000 |
| 1/4" | 0.281" | 2.000" | 0.052"-0.072" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1/4" | 0.281" | 2.500" | 0.051"-0.080" | Not Rated | __ | 5 | 000000000 | 00000 |
| 1/4" | 0.281" | 3.000" | 0.051"-0.080" | Not Rated | __ | 1 | 000000000 | 0000 |
| 5/16" | 0.328" | 0.625" | 0.056"-0.070" | Not Rated | __ | 50 | 000000000 | 0000 |
| 5/16" | 0.328" | 0.625" | 0.110"-0.140" | Rockwell B68 | __ | 25 | 000000000 | 00000 |
| 5/16" | 0.344" | 0.750" | 0.110"-0.140" | Rockwell B68 | __ | 25 | 000000000 | 00000 |
| 5/16" | 0.344" | 0.750" | 0.170"-0.200" | Not Rated | __ | 5 | 000000000 | 00000 |
| 5/16" | 0.344" | 1.250" | 0.040"-0.060" | Not Rated | __ | 10 | 000000000 | 0000 |
| 5/16" | 0.344" | 1.500" | 0.052"-0.072" | Not Rated | __ | 10 | 000000000 | 0000 |
| 5/16" | 0.344" | 2.000" | 0.052"-0.072" | Not Rated | __ | 5 | 000000000 | 0000 |
| 5/16" | 0.344" | 2.500" | 0.051"-0.080" | Not Rated | __ | 5 | 000000000 | 00000 |
| 5/16" | 0.344" | 3.000" | 0.051"-0.080" | Not Rated | __ | 1 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.750" | 0.110"-0.140" | Rockwell B68 | __ | 25 | 000000000 | 00000 |
| 3/8" | 0.406" | 0.875" | 0.043"-0.057" | Not Rated | __ | 50 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.875" | 0.110"-0.140" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 3/8" | 0.406" | 1.000" | 0.040"-0.060" | Not Rated | __ | 50 | 000000000 | 0000 |
| 3/8" | 0.406" | 1.000" | 0.056"-0.071" | Not Rated | __ | 10 | 000000000 | 00000 |
| 3/8" | 0.406" | 1.000" | 0.110"-0.140" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 3/8" | 0.406" | 1.250" | 0.052"-0.072" | Not Rated | __ | 10 | 000000000 | 0000 |
| 3/8" | 0.406" | 1.500" | 0.052"-0.072" | Not Rated | __ | 10 | 000000000 | 0000 |
| 3/8" | 0.406" | 1.625" | 0.056"-0.070" | Not Rated | __ | 10 | 000000000 | 0000 |
| 3/8" | 0.406" | 2.000" | 0.052"-0.072" | Not Rated | __ | 5 | 000000000 | 0000 |
| 3/8" | 0.406" | 3.000" | 0.051"-0.080" | Not Rated | __ | 1 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.000" | 0.110"-0.140" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.125" | 0.110"-0.140" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.250" | 0.110"-0.140" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.250" | 0.170"-0.200" | Not Rated | __ | 5 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.500" | 0.110"-0.140" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.500" | 0.170"-0.200" | Not Rated | __ | 5 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.000" | 0.060"-0.090" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.125" | 0.110"-0.140" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.250" | 0.110"-0.140" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.250" | 0.170"-0.200" | Not Rated | __ | 5 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.500" | 0.052"-0.072" | Not Rated | __ | 10 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.500" | 0.110"-0.140" | Rockwell B68 | __ | 5 | 000000000 | 00000 |
| 1/2" | 0.531" | 2.000" | 0.052"-0.072" | Not Rated | __ | 5 | 000000000 | 0000 |
| 1/2" | 0.531" | 3.000" | 0.051"-0.080" | Not Rated | __ | 1 | 000000000 | 0000 |
| 9/16" | 0.578" | 1.062" | 0.110"-0.140" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
| 9/16" | 0.578" | 1.250" | 0.050"-0.080" | Not Rated | __ | 10 | 000000000 | 00000 |
| 9/16" | 0.625" | 1.375" | 0.071"-0.085" | Not Rated | __ | 10 | 000000000 | 0000 |
| 9/16" | 0.625" | 1.375" | 0.110"-0.140" | Rockwell B68 | __ | 5 | 000000000 | 00000 |
| 5/8" | 0.656" | 1.375" | 0.110"-0.140" | Not Rated | __ | 5 | 000000000 | 00000 |
| 5/8" | 0.656" | 1.500" | 0.110"-0.140" | Rockwell B68 | __ | 5 | 000000000 | 00000 |
| 5/8" | 0.688" | 1.500" | 0.110"-0.140" | Rockwell B68 | __ | 5 | 000000000 | 00000 |
| 3/4" | 0.812" | 1.500" | 0.170"-0.200" | Rockwell B68 | __ | 5 | 000000000 | 00000 |