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Electrical-Insulating Plastic Washers
These washers are excellent electrical insulators.
Hard fiber washers resist organic solvents and petroleum-based oils.
For technical drawings and 3-D models, click on a part number.
Temperature Range, °F | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Screw Size  | ID | OD | Thick. | Min. | Max. | Hardness | Specifications Met | Color | Pkg. Qty. | Pkg. | |
Hard Fiber | |||||||||||
| No. 2 | 0.094" | 0.250" | 0.010"-0.020" | Not Rated | 230° | Rockwell R70 | __ | Black | 100 | 000000000 | 000000 |
| No. 2 | 0.094" | 0.250" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| No. 2 | 0.094" | 0.250" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.250" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.250" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.010"-0.020" | Not Rated | 230° | Rockwell R70 | __ | Black | 100 | 000000000 | 00000 |
| No. 4 | 0.126" | 0.375" | 0.036"-0.044" | Not Rated | 230° | Rockwell R80 | __ | Black | 10 | 000000000 | 00000 |
| No. 5 | 0.141" | 0.312" | 0.036"-0.044" | Not Rated | 230° | Rockwell R80 | __ | Black | 10 | 000000000 | 00000 |
| No. 6 | 0.145" | 0.375" | 0.026"-0.036" | Not Rated | 230° | Rockwell R70 | __ | Black | 100 | 000000000 | 00000 |
| No. 6 | 0.156" | 0.312" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| No. 8 | 0.172" | 0.375" | 0.026"-0.036" | Not Rated | 230° | Rockwell R70 | __ | Black | 100 | 000000000 | 00000 |
| No. 8 | 0.188" | 0.375" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.375" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| No. 8 | 0.188" | 0.438" | 0.036"-0.044" | Not Rated | 230° | Rockwell R80 | __ | Black | 10 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.375" | 0.042"-0.052" | Not Rated | 230° | Rockwell R70 | __ | Black | 100 | 000000000 | 00000 |
| No. 10 | 0.203" | 0.438" | 0.041"-0.051" | Not Rated | 230° | Rockwell R70 | __ | Black | 100 | 000000000 | 00000 |
| No. 10 | 0.203" | 0.500" | 0.036"-0.044" | Not Rated | 230° | Rockwell R80 | __ | Black | 10 | 000000000 | 0000 |
| No. 12 | 0.234" | 0.500" | 0.042"-0.052" | Not Rated | 230° | Rockwell R70 | __ | Black | 50 | 000000000 | 0000 |
| 1/4" | 0.250" | 0.375" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 1/4" | 0.250" | 0.375" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 1/4" | 0.250" | 0.500" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 1/4" | 0.250" | 0.500" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 1/4" | 0.281" | 0.625" | 0.057"-0.067" | Not Rated | 230° | Rockwell R70 | ASME B18.21.1 | Black | 25 | 000000000 | 00000 |
| 5/16" | 0.312" | 0.438" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 5/16" | 0.312" | 0.438" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 5/16" | 0.312" | 0.562" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 5/16" | 0.312" | 0.562" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 5/16" | 0.325" | 0.688" | 0.057"-0.067" | Not Rated | 230° | Rockwell R70 | __ | Black | 100 | 000000000 | 00000 |
| 3/8" | 0.375" | 0.500" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 3/8" | 0.375" | 0.500" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 3/8" | 0.375" | 0.625" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 3/8" | 0.375" | 0.625" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 3/8" | 0.375" | 2.250" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Gray | 10 | 000000000 | 00000 |
| 3/8" | 0.406" | 0.875" | 0.088"-0.098" | Not Rated | 230° | Rockwell R70 | __ | Black | 25 | 000000000 | 00000 |
| 7/16" | 0.438" | 0.625" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 50 | 000000000 | 0000 |
| 7/16" | 0.438" | 0.625" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 1/2" | 0.500" | 0.625" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 1/2" | 0.500" | 0.688" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 1/2" | 0.500" | 0.688" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 1/2" | 0.500" | 0.750" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 1/2" | 0.500" | 0.750" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 1/2" | 0.500" | 2.250" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Gray | 10 | 000000000 | 00000 |
| 1/2" | 0.531" | 1.000" | 0.088"-0.098" | Not Rated | 230° | Rockwell R70 | __ | Black | 25 | 000000000 | 00000 |
| 9/16" | 0.562" | 0.812" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 00000 |
| 9/16" | 0.562" | 0.812" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 5/8" | 0.625" | 0.750" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 5/8" | 0.625" | 0.875" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 50 | 000000000 | 0000 |
| 5/8" | 0.625" | 0.875" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 5/8" | 0.625" | 2.250" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Gray | 10 | 000000000 | 00000 |
| 5/8" | 0.645" | 1.063" | 0.088"-0.098" | Not Rated | 230° | Rockwell R70 | __ | Black | 25 | 000000000 | 00000 |
| 5/8" | 0.656" | 1.312" | 0.086"-0.100" | Not Rated | 230° | Rockwell R80 | __ | Black | 5 | 000000000 | 0000 |
| 5/8" | 0.688" | 0.938" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 3/4" | 0.750" | 1.000" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 3/4" | 0.750" | 1.000" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 3/4" | 0.750" | 1.063" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 0000 |
| 3/4" | 0.750" | 2.250" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Gray | 10 | 000000000 | 00000 |
| 3/4" | 0.810" | 1.125" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Black | 10 | 000000000 | 00000 |
| 3/4" | 0.812" | 1.125" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 3/4" | 0.812" | 1.125" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 50 | 000000000 | 0000 |
| 7/8" | 0.875" | 1.188" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 7/8" | 0.875" | 1.188" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 00000 |
| 7/8" | 0.875" | 2.250" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Gray | 10 | 000000000 | 00000 |
| 7/8" | 0.930" | 1.250" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Black | 10 | 000000000 | 00000 |
| 7/8" | 0.938" | 1.250" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 50 | 000000000 | 0000 |
| 1" | 1.000" | 1.250" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 100 | 000000000 | 0000 |
| 1" | 1.000" | 1.250" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 00000 |
| 1" | 1.000" | 2.250" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Gray | 10 | 000000000 | 00000 |
| 1" | 1.031" | 1.312" | 0.014"-0.016" | Not Rated | 230° | Not Rated | __ | Gray | 50 | 000000000 | 00000 |
| 1" | 1.031" | 1.312" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 50 | 000000000 | 0000 |
| 1" | 1.125" | 2.000" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Black | 10 | 000000000 | 00000 |
| 1 1/8" | 1.188" | 1.562" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 00000 |
| 1 1/4" | 1.250" | 1.625" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 50 | 000000000 | 00000 |
| 1 1/4" | 1.312" | 2.125" | 0.120"-0.130" | Not Rated | 230° | Rockwell R70 | __ | Black | 5 | 000000000 | 0000 |
Metric Electrical-Insulating Plastic Washers
These washers are excellent electrical insulators.
Hard fiber washers are resistant to organic solvents and petroleum-based oils. They meet the dimensional standards of DIN 125, but not all meet the thickness requirement.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID, mm | OD, mm | Thick., mm | Max. Temperature, °F | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Hard Fiber | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Black | |||||||||
| M1.2 | 1.3 | 3.8 | 0.2-0.3 | 230° | Rockwell R70 | DIN 125 | 10 | 000000000 | 000000 |
| M1.4 | 1.5 | 3.8 | 0.2-0.3 | 230° | Rockwell R70 | DIN 125 | 10 | 000000000 | 00000 |
| M1.6 | 1.7 | 3.9 | 0.2-0.3 | 230° | Rockwell R70 | DIN 125 | 10 | 000000000 | 00000 |
| M2 | 2.3 | 5.0 | 0.3-0.4 | 230° | Rockwell R70 | DIN 125 | 25 | 000000000 | 00000 |
| M2.5 | 2.7 | 6.5 | 0.4-0.6 | 230° | Not Rated | DIN 125 | 100 | 000000000 | 00000 |
| M3 | 3.2 | 7.0 | 0.4-0.6 | 230° | Not Rated | DIN 125 | 100 | 000000000 | 00000 |
| M3.5 | 3.7 | 7.8 | 0.5-0.6 | 230° | Rockwell R70 | DIN 125 | 10 | 000000000 | 00000 |
| M4 | 4.3 | 9.0 | 0.7-0.9 | 230° | Not Rated | DIN 125 | 100 | 000000000 | 00000 |
| M6 | 6.4 | 12.5 | 1.4-1.7 | 230° | Not Rated | DIN 125 | 50 | 000000000 | 0000 |
| M7 | 7.4 | 13.8 | 1.4-1.7 | 230° | Rockwell R70 | DIN 125 | 10 | 000000000 | 00000 |
| M8 | 8.4 | 17.0 | 1.4-1.7 | 230° | Not Rated | DIN 125 | 50 | 000000000 | 0000 |
| M10 | 10.5 | 21.0 | 1.8-2.2 | 230° | Rockwell R50 | DIN 125 | 50 | 000000000 | 00000 |
| M12 | 13 | 24.0 | 2.1-2.5 | 230° | Rockwell R50 | DIN 125 | 50 | 000000000 | 00000 |
| M16 | 17 | 30.0 | 2.1-2.5 | 230° | Rockwell R50 | DIN 125 | 25 | 000000000 | 0000 |
| M20 | 21 | 37.0 | 2.1-2.5 | 230° | Rockwell R50 | DIN 125 | 25 | 000000000 | 00000 |
| M24 | 25 | 44.0 | 2.8-3.5 | 230° | Rockwell R50 | DIN 125 | 10 | 000000000 | 0000 |
| M30 | 31 | 56.0 | 2.8-3.6 | 230° | Rockwell R50 | DIN 125 | 10 | 000000000 | 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.
Hard fiber washers resist organic solvents and petroleum-based oil.
For technical drawings and 3-D models, click on a part number.
Sleeve | Temperature Range, °F | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Screw Size | ID | OD | OD | Ht. | Thick. | Overall Ht. | Min. | Max. | Hardness | Color | Pkg. Qty. | Pkg. | |
Hard Fiber | |||||||||||||
| No. 2 | 0.090" | 0.250" | 0.154" | 0.025" | 0.030" | 0.055" | Not Rated | 230° | Rockwell R50 | Black | 50 | 000000000 | 000000 |
| No. 4 | 0.116" | 0.250" | 0.186" | 0.025" | 0.030" | 0.055" | Not Rated | 230° | Rockwell R50 | Black | 50 | 000000000 | 00000 |
| No. 6 | 0.142" | 0.313" | 0.186" | 0.030" | 0.040" | 0.070" | Not Rated | 230° | Rockwell R50 | Black | 50 | 000000000 | 0000 |
| No. 8 | 0.168" | 0.375" | 0.246" | 0.030" | 0.040" | 0.070" | Not Rated | 230° | Rockwell R50 | Black | 50 | 000000000 | 00000 |
| No. 10 | 0.194" | 0.375" | 0.312" | 0.030" | 0.040" | 0.070" | Not Rated | 230° | Rockwell R50 | Black | 50 | 000000000 | 00000 |
| 1/4" | 0.254" | 0.500" | 0.312" | 0.030" | 0.040" | 0.070" | Not Rated | 230° | Rockwell R50 | Black | 50 | 000000000 | 00000 |
| 3/8" | 0.380" | 0.625" | 0.437" | 0.040" | 0.060" | 0.100" | Not Rated | 230° | Rockwell R50 | Black | 50 | 000000000 | 00000 |