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Electrical-Insulating Plastic Washers
These washers are excellent electrical insulators.
Phenolic washers have low moisture absorption, so they won’t expand or become brittle over time. Color ranges from red-brown to yellow-brown.
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. | |
Phenolic Plastic | |||||||||||
| No. 0 | 0.065" | 0.188" | 0.008"-0.012" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 00000 |
| No. 2 | 0.090" | 0.250" | 0.027"-0.035" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.312" | 0.056"-0.070" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| No. 5 | 0.140" | 0.281" | 0.027"-0.035" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| No. 6 | 0.152" | 0.500" | 0.056"-0.070" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| No. 10 | 0.202" | 0.632" | 0.056"-0.070" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| No. 12 | 0.219" | 0.375" | 0.027"-0.035" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| 1/4" | 0.282" | 0.625" | 0.056"-0.070" | Not Rated | 250° | Rockwell M95 | ASME B18.21.1 | Brown | 5 | 000000000 | 0000 |
| 5/16" | 0.385" | 0.625" | 0.056"-0.070" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| 7/16" | 0.443" | 0.750" | 0.057"-0.067" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| 1/2" | 0.505" | 0.750" | 0.057"-0.067" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| 9/16" | 0.625" | 1.500" | 0.085"-0.101" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.500" | 0.085"-0.101" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| 3/4" | 0.812" | 1.500" | 0.085"-0.101" | Not Rated | 250° | Rockwell M95 | __ | Brown | 5 | 000000000 | 0000 |
| 7/8" | 0.935" | 1.750" | 0.115"-0.135" | Not Rated | 250° | Rockwell M95 | ASME B18.21.1 | Brown | 5 | 000000000 | 0000 |
Metric Electrical-Insulating Plastic Washers
These washers are excellent electrical insulators.
Phenolic washers have low moisture absorption, so they won’t expand or become brittle over time. Color ranges from red-brown to yellow-brown.
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. | |
Phenolic Plastic | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| M2 | 2.2 | 5.0 | 0.7-0.9 | 250° | Rockwell M95 | Brown | 10 | 000000000 | 000000 |
| M4 | 4.3 | 9.0 | 0.7-0.9 | 250° | Rockwell M95 | Brown | 10 | 000000000 | 00000 |
| M5 | 5.3 | 11.0 | 0.9-1.1 | 250° | Rockwell M95 | Brown | 10 | 000000000 | 00000 |
| M6 | 6.4 | 12.0 | 1.4-1.7 | 250° | Rockwell M95 | Brown | 10 | 000000000 | 00000 |