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About Washers
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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. 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. 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. 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" | 0.688" | 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 | 0000 |
| 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 | 0000 |
| 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 |
| 1 1/8" | 1.188" | 1.562" | 0.028"-0.034" | Not Rated | 230° | Not Rated | __ | Red | 100 | 000000000 | 00000 |
Metric Electrical-Insulating Plastic Washers
These washers are excellent electrical insulators.
Hard fiber washers are resistant to organic solvents and petroleum-based oils.
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 | |||||||||
| M2.5 | 2.7 | 6.5 | 0.4-0.6 | 230° | Not Rated | DIN 125 | 100 | 000000000 | 000000 |
| M3 | 3.2 | 7.0 | 0.4-0.6 | 230° | Not Rated | DIN 125 | 100 | 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 |
| 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 | 13.0 | 24.0 | 2.1-2.5 | 230° | Rockwell R50 | DIN 125 | 50 | 000000000 | 00000 |
| M16 | 17.0 | 30.0 | 2.1-2.5 | 230° | Rockwell R50 | DIN 125 | 25 | 000000000 | 0000 |
| M20 | 21.0 | 37.0 | 2.1-2.5 | 230° | Rockwell R50 | DIN 125 | 25 | 000000000 | 00000 |
| M24 | 25.0 | 44.0 | 2.8-3.5 | 230° | Rockwell R50 | DIN 125 | 10 | 000000000 | 0000 |
| M30 | 31.0 | 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.
Temperature Range, °F | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Screw Size | ID | OD | Sleeve OD | Thick. | Overall Ht. | Min. | Max. | Color | Pkg. Qty. | Pkg. | |
Hard Fiber | |||||||||||
| No. 2 | 0.090" | 0.250" | 0.154" | 0.030" | 0.055" | Not Rated | 230° | Black | 50 | 000000000 | 000000 |
| No. 4 | 0.116" | 0.250" | 0.186" | 0.030" | 0.055" | Not Rated | 230° | Black | 50 | 000000000 | 00000 |
| No. 6 | 0.142" | 0.313" | 0.186" | 0.040" | 0.070" | Not Rated | 230° | Black | 50 | 000000000 | 0000 |
| No. 8 | 0.168" | 0.375" | 0.246" | 0.040" | 0.070" | Not Rated | 230° | Black | 50 | 000000000 | 00000 |
| No. 10 | 0.194" | 0.375" | 0.312" | 0.040" | 0.070" | Not Rated | 230° | Black | 50 | 000000000 | 00000 |
| 1/4" | 0.254" | 0.500" | 0.312" | 0.040" | 0.070" | Not Rated | 230° | Black | 50 | 000000000 | 0000 |
| 3/8" | 0.380" | 0.625" | 0.437" | 0.060" | 0.100" | Not Rated | 230° | Black | 50 | 000000000 | 00000 |
Cushioning Washers
These wool felt washers can be soaked with oil to lubricate joints. Use them to cushion joints and damp vibration.
For technical drawings and 3-D models, click on a part number.
Temperature Range, °F | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Screw Size | ID | OD | Thick. | Min. | Max. | Color | Specifications Met | Pkg. Qty. | Pkg. | |
Wool Felt | ||||||||||
| No. 6 | 0.138" | 0.250" | 0.175"-0.201" | -80° | 200° | Gray | SAE J314 | 50 | 000000000 | 00000 |
| No. 8 | 0.164" | 0.313" | 0.175"-0.201" | -80° | 200° | Gray | SAE J314 | 50 | 000000000 | 0000 |
| No. 10 | 0.190" | 0.375" | 0.175"-0.201" | -80° | 200° | Gray | SAE J314 | 50 | 000000000 | 0000 |
| No. 10 | 0.190" | 0.563" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 50 | 000000000 | 0000 |
| No. 12 | 0.216" | 0.438" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 50 | 000000000 | 0000 |
| 1/4" | 0.250" | 0.500" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 50 | 000000000 | 0000 |
| 1/4" | 0.250" | 0.750" | 0.230"-0.270" | -80° | 200° | Gray | __ | 25 | 000000000 | 00000 |
| 1/4" | 0.250" | 1.000" | 0.413"-0.463" | -80° | 200° | Gray | __ | 10 | 000000000 | 0000 |
| 5/16" | 0.312" | 0.563" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 5 | 000000000 | 0000 |
| 3/8" | 0.375" | 0.625" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 50 | 000000000 | 00000 |
| 3/8" | 0.375" | 1.000" | 0.230"-0.270" | -80° | 200° | Gray | __ | 25 | 000000000 | 00000 |
| 3/8" | 0.375" | 1.500" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 25 | 000000000 | 00000 |
| 1/2" | 0.500" | 1.000" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 25 | 000000000 | 0000 |
| 1/2" | 0.500" | 1.250" | 0.230"-0.270" | -80° | 200° | Gray | __ | 25 | 000000000 | 00000 |
| 1/2" | 0.500" | 1.500" | 0.230"-0.270" | -80° | 200° | Gray | __ | 10 | 000000000 | 0000 |
| 5/8" | 0.625" | 1.750" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 15 | 000000000 | 0000 |
| 3/4" | 0.750" | 1.250" | 0.230"-0.270" | -80° | 200° | Gray | __ | 25 | 000000000 | 00000 |
| 3/4" | 0.750" | 2.000" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 15 | 000000000 | 00000 |
| 7/8" | 0.875" | 2.250" | 0.236"-0.264" | -80° | 200° | Gray | SAE J314 | 10 | 000000000 | 0000 |
| 1" | 1.000" | 2.000" | 0.475"-0.525" | -80° | 200° | Gray | __ | 5 | 000000000 | 0000 |
| 1" | 1.000" | 2.500" | 0.481"-0.519" | -80° | 200° | Gray | SAE J314 | 5 | 000000000 | 0000 |
| 1 1/4" | 1.250" | 3.000" | 0.481"-0.519" | -80° | 200° | Gray | SAE J314 | 5 | 000000000 | 00000 |
| 1 1/2" | 1.500" | 2.500" | 0.481"-0.519" | -80° | 200° | Gray | SAE J314 | 5 | 000000000 | 0000 |
| 1 1/2" | 1.500" | 3.000" | 0.481"-0.519" | -80° | 200° | Gray | SAE J314 | 5 | 000000000 | 00000 |
V-Belts
