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About Washers
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Metric Extreme-Temperature Ceramic Washers
Ceramic washers withstand temperatures up to 3000° F. They are good electrical insulators and resist moisture as well as hydrochloric and nitric acid gases. Suitable for use in ovens.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID, mm | OD, mm | Thick., mm | Max. Temperature, °F | Specifications Met | Color | Each | |
Ceramic | ||||||||
|---|---|---|---|---|---|---|---|---|
| M2 | 2.6 | 6.0 | 0.6-0.9 | 3000° | ASME B18.22M | Off-White | 000000000 | 00000 |
| M3 | 3.6 | 10.0 | 0.8-1.2 | 3000° | ASME B18.22M | Off-White | 000000000 | 0000 |
| M4 | 4.8 | 12.0 | 1.0-1.4 | 3000° | ASME B18.22M | Off-White | 000000000 | 0000 |
| M5 | 5.6 | 15.0 | 1.2-1.8 | 3000° | __ | Off-White | 000000000 | 0000 |
| M6 | 6.8 | 18.8 | 1.2-1.8 | 3000° | __ | Off-White | 000000000 | 0000 |
| M8 | 9.0 | 25.4 | 1.6-2.3 | 3000° | ASME B18.22M | Off-White | 000000000 | 0000 |
| M10 | 11.0 | 28.0 | 2.0-2.8 | 3000° | ASME B18.22M | Off-White | 000000000 | 0000 |
| M12 | 13.4 | 34.0 | 2.5-3.5 | 3000° | ASME B18.22M | Off-White | 000000000 | 0000 |
| M14 | 15.4 | 39.0 | 2.5-3.5 | 3000° | ASME B18.22M | Off-White | 000000000 | 0000 |
| M16 | 17.4 | 44.0 | 3.0-4.0 | 3000° | ASME B18.22M | Off-White | 000000000 | 0000 |
| M20 | 22.0 | 50.0 | 3.5-4.6 | 3000° | ASME B18.22M | Off-White | 000000000 | 00000 |
Extreme-Temperature Ceramic Washers
Ceramic washers withstand temperatures up to 3000° F. They are good electrical insulators and resist moisture as well as hydrochloric and nitric acid gases. Suitable for use in ovens.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Max. Temperature, °F | Specifications Met | Color | Each | |
Ceramic | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.068" | 0.188" | 0.022"-0.028" | 3000° | __ | Off-White | 000000000 | 00000 |
| No. 2 | 0.094" | 0.250" | 0.028"-0.036" | 3000° | __ | Off-White | 000000000 | 0000 |
| No. 4 | 0.125" | 0.375" | 0.036"-0.045" | 3000° | __ | Off-White | 000000000 | 0000 |
| No. 5 | 0.141" | 0.406" | 0.036"-0.045" | 3000° | __ | Off-White | 000000000 | 0000 |
| No. 6 | 0.156" | 0.438" | 0.036"-0.045" | 3000° | __ | Off-White | 000000000 | 0000 |
| No. 8 | 0.188" | 0.500" | 0.036"-0.045" | 3000° | __ | Off-White | 000000000 | 0000 |
| No. 10 | 0.203" | 0.562" | 0.036"-0.045" | 3000° | __ | Off-White | 000000000 | 0000 |
| No. 12 | 0.234" | 0.625" | 0.056"-0.071" | 3000° | __ | Off-White | 000000000 | 0000 |
| 1/4" | 0.281" | 0.734" | 0.056"-0.071" | 3000° | __ | Off-White | 000000000 | 0000 |
| 5/16" | 0.344" | 0.875" | 0.056"-0.071" | 3000° | __ | Off-White | 000000000 | 0000 |
| 3/8" | 0.406" | 1.000" | 0.056"-0.071" | 3000° | __ | Off-White | 000000000 | 0000 |
| 7/16" | 0.469" | 1.125" | 0.056"-0.071" | 3000° | __ | Off-White | 000000000 | 0000 |
| 1/2" | 0.531" | 1.250" | 0.090"-0.112" | 3000° | __ | Off-White | 000000000 | 0000 |
| 9/16" | 0.594" | 1.469" | 0.090"-0.112" | 3000° | __ | Off-White | 000000000 | 0000 |
| 5/8" | 0.656" | 1.750" | 0.090"-0.112" | 3000° | __ | Off-White | 000000000 | 0000 |
| 3/4" | 0.812" | 2.000" | 0.090"-0.112" | 3000° | __ | Off-White | 000000000 | 0000 |
| 7/8" | 0.938" | 2.250" | 0.146"-0.174" | 3000° | ASME B18.21.1 | Off-White | 000000000 | 0000 |
| 1" | 1.062" | 2.500" | 0.146"-0.174" | 3000° | ASME B18.21.1 | Off-White | 000000000 | 0000 |
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.
Ceramic washers withstand high temperatures and resist moisture as well as hydrochloric and nitric acid gases.
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. | |
Ceramic | |||||||||||
| No. 6 | 0.150" | 0.500" | 0.281" | 0.125" | 0.187" | Not Rated | 1700° | White | 5 | 000000000 | 000000 |
| No. 6 | 0.150" | 0.500" | 0.281" | 0.187" | 0.437" | Not Rated | 1700° | White | 5 | 000000000 | 00000 |
| No. 8 | 0.175" | 0.625" | 0.406" | 0.125" | 0.187" | Not Rated | 1700° | White | 5 | 000000000 | 00000 |
| No. 8 | 0.175" | 0.625" | 0.406" | 0.218" | 0.468" | Not Rated | 1700° | White | 5 | 000000000 | 00000 |
| No. 10 | 0.200" | 0.750" | 0.468" | 0.156" | 0.218" | Not Rated | 1700° | White | 5 | 000000000 | 00000 |
| No. 10 | 0.200" | 0.750" | 0.468" | 0.218" | 0.468" | Not Rated | 1700° | White | 5 | 000000000 | 00000 |
| 1/4" | 0.265" | 0.875" | 0.593" | 0.188" | 0.250" | Not Rated | 1700° | White | 5 | 000000000 | 00000 |
| 1/4" | 0.265" | 0.875" | 0.593" | 0.250" | 0.500" | Not Rated | 1700° | White | 5 | 000000000 | 00000 |
Electrical-Insulating Unthreaded Spacers
Ceramic
Protect components from electrical charges.
Ceramic spacers withstand high temperatures.
For technical drawings and 3-D models, click on a part number.
| Lg. | For Screw Size | ID | Dielectric Strength, V/mil | Temperature Range, °F | Color | Pkg. Qty. | Pkg. | |
Unglazed Grade L5 Ceramic | ||||||||
|---|---|---|---|---|---|---|---|---|
1/4" OD | ||||||||
| 3/16" | No. 3 | 0.115" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 00000 |
| 3/16" | No. 4 | 0.140" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 1/4" | No. 3 | 0.115" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 1/4" | No. 4 | 0.140" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 3/8" | No. 3 | 0.115" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 3/8" | No. 4 | 0.140" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 1/2" | No. 4 | 0.140" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 5/8" | No. 4 | 0.140" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 3/4" | No. 4 | 0.140" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
3/8" OD | ||||||||
| 1/4" | No. 8 | 0.192" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 3/8" | No. 8 | 0.192" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 1/2" | No. 8 | 0.192" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 3/4" | No. 8 | 0.192" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 1" | No. 8 | 0.192" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
1/2" OD | ||||||||
| 3/8" | No. 10 | 0.250" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 1/2" | No. 10 | 0.250" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 3/4" | No. 10 | 0.250" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |
| 1" | No. 10 | 0.250" | 275 | 50° to 1700° | Beige | 1 | 000000000 | 0000 |