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About Washers
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Electrical-Insulating Plastic Washers
These washers are excellent electrical insulators.
Polypropylene washers resist organic solvents and degreasing agents.
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. | |
Polypropylene Plastic | |||||||||||
| No. 0 | 0.065" | 0.188" | 0.008"-0.012" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 00000 |
| No. 2 | 0.090" | 0.250" | 0.028"-0.034" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| No. 4 | 0.120" | 0.250" | 0.028"-0.034" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| No. 5 | 0.140" | 0.281" | 0.028"-0.034" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| No. 6 | 0.140" | 0.312" | 0.062"-0.067" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 10 | 000000000 | 0000 |
| No. 8 | 0.170" | 0.375" | 0.062"-0.067" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 10 | 000000000 | 0000 |
| No. 10 | 0.190" | 0.375" | 0.062"-0.067" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 10 | 000000000 | 0000 |
| No. 12 | 0.219" | 0.375" | 0.028"-0.034" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| 1/4" | 0.255" | 0.500" | 0.062"-0.067" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 10 | 000000000 | 0000 |
| 5/16" | 0.317" | 0.500" | 0.057"-0.067" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| 3/8" | 0.380" | 0.625" | 0.057"-0.067" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| 7/16" | 0.443" | 0.750" | 0.057"-0.067" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| 1/2" | 0.505" | 0.750" | 0.057"-0.067" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| 9/16" | 0.625" | 1.500" | 0.085"-0.101" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.500" | 0.085"-0.101" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| 3/4" | 0.812" | 1.500" | 0.085"-0.101" | Not Rated | 150° | Rockwell R85 | __ | Off-White | 5 | 000000000 | 0000 |
| 7/8" | 0.935" | 1.750" | 0.115"-0.135" | Not Rated | 150° | Rockwell R85 | ASME B18.21.1 | Off-White | 5 | 000000000 | 0000 |
| 1" | 1.062" | 2.000" | 0.115"-0.135" | Not Rated | 150° | Not Rated | ASME B18.21.1 | Off-White | 5 | 000000000 | 0000 |
Metric Electrical-Insulating Plastic Washers
These washers are excellent electrical insulators.
Polypropylene washers resist organic solvents and degreasing agents.
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 | Color | Pkg. Qty. | Pkg. | |
Polypropylene Plastic | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| M2 | 2.2 | 5.0 | 0.7-0.9 | 150° | Rockwell R85 | Off-White | 10 | 000000000 | 00000 |
| M3 | 3.2 | 8.0 | 0.7-0.9 | 150° | Rockwell R85 | Off-White | 10 | 000000000 | 0000 |
| M4 | 4.3 | 9.0 | 0.7-1.0 | 150° | Rockwell R100 | Off-White | 10 | 000000000 | 0000 |
| M5 | 5.3 | 10.0 | 0.9-1.2 | 150° | Rockwell R100 | Off-White | 10 | 000000000 | 0000 |
| M6 | 6.4 | 12.5 | 1.4-1.9 | 150° | Rockwell R100 | Off-White | 10 | 000000000 | 0000 |
| M7 | 7.4 | 16.0 | 1.4-1.7 | 150° | Rockwell R85 | Off-White | 10 | 000000000 | 0000 |
| M8 | 8.4 | 17.0 | 1.4-1.9 | 150° | Rockwell R100 | Off-White | 10 | 000000000 | 0000 |
| M10 | 10.5 | 21.0 | 1.7-2.3 | 150° | Rockwell R100 | Off-White | 5 | 000000000 | 0000 |
| M12 | 13.0 | 24.0 | 2.2-2.8 | 150° | Rockwell R100 | Off-White | 5 | 000000000 | 0000 |
| M14 | 15.1 | 28.0 | 2.2-2.5 | 150° | Rockwell R85 | Off-White | 5 | 000000000 | 0000 |
| M16 | 17.0 | 30.0 | 3.0-3.3 | 150° | Rockwell R101 | Off-White | 5 | 000000000 | 0000 |
| M18 | 19.0 | 34.0 | 3.0-3.3 | 150° | Rockwell R101 | Off-White | 5 | 000000000 | 0000 |
| M20 | 21.2 | 37.0 | 3.0-3.3 | 150° | Rockwell R85 | Off-White | 5 | 000000000 | 0000 |