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OD OD |
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ID ID |
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Minimum Temperature Minimum Temperature |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Washers
More
Self-Retaining Washers

A specially shaped ID grips your screw shank tightly. All of these washers are good electrical insulators.
Nylon washers are more wear resistant than polyethylene washers. They are not, however, as moisture resistant.
Polyethylene washers are softer, more flexible, and withstand moisture better than nylon washers. They are not as wear resistant.
For technical drawings and 3-D models, click on a part number.
Inch
Temperature Range, °F | ||||||||||
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For Screw Size | ID | OD | Thick. | Min. | Max. | Hardness | Choose a Color | Pkg. Qty. | Pkg. | |
Nylon Plastic | ||||||||||
No. 7 | 0.215" | 0.750" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 000000 | |
No. 7 | 0.215" | 1.000" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 25 | 000000000 | 0000 | |
7/16" | 0.410" | 1.031" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
1/2" | 0.468" | 1.125" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 00000 | |
1/2" | 0.468" | 1.125" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
7/8" | 0.825" | 1.343" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 00000 | |
1" | 0.970" | 1.385" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 50 | 000000000 | 00000 |
Inch and Metric
Temperature Range, °F | ||||||||||
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For Screw Size | ID | OD | Thick. | Min. | Max. | Hardness | Choose a Color | Pkg. Qty. | Pkg. | |
Nylon Plastic | ||||||||||
No. 2, M2 | 0.078" | 0.203" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 00000 | |
No. 2, M2 | 0.078" | 0.203" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 3, M2.5 | 0.106" | 0.197" | 0.053"-0.065" | -40° | 180° | Rockwell R120 | Off-White | 100 | 000000000 | 00000 |
No. 4, M3 | 0.102" | 0.250" | 0.040"-0.060" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 4, M3 | 0.102" | 0.265" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 4, M3 | 0.102" | 0.265" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 4, M3 | 0.102" | 0.265" | 0.115"-0.135" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 00000 | |
No. 4, M3 | 0.126" | 0.217" | 0.081"-0.093" | -40° | 180° | Rockwell R120 | Off-White | 50 | 000000000 | 0000 |
No. 4, M3 | 0.126" | 0.354" | 0.053"-0.065" | -40° | 180° | Rockwell R120 | Off-White | 100 | 000000000 | 00000 |
No. 6, M3.5 | 0.128" | 0.328" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 6, M3.5 | 0.128" | 0.328" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 8, M4 | 0.135" | 0.390" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 8, M4 | 0.135" | 0.453" | 0.035"-0.055" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 00000 | |
No. 8, M4 | 0.152" | 0.328" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 8, M4 | 0.152" | 0.390" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 8, M4 | 0.152" | 0.390" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 8, M4 | 0.169" | 0.276" | 0.085"-0.096" | -40° | 180° | Rockwell R120 | Off-White | 100 | 000000000 | 00000 |
No. 8, M4 | 0.169" | 0.472" | 0.049"-0.061" | -40° | 180° | Rockwell R120 | Off-White | 100 | 000000000 | 00000 |
No. 10, M5 | 0.177" | 0.400" | 0.045"-0.065" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 10, M5 | 0.177" | 0.453" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 10, M5 | 0.177" | 0.453" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
No. 10, M5 | 0.177" | 0.500" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 00000 | |
No. 10, M5 | 0.177" | 0.630" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 00000 | |
No. 10, M5 | 0.177" | 0.787" | 0.049"-0.069" | -40° | 180° | Rockwell R120 | 50 | 000000000 | 00000 | |
No. 10, M5 | 0.209" | 0.335" | 0.104"-0.116" | -40° | 180° | Rockwell R120 | Off-White | 50 | 000000000 | 00000 |
No. 10, M5 | 0.209" | 0.453" | 0.049"-0.061" | -40° | 180° | Rockwell R120 | Off-White | 100 | 000000000 | 00000 |
1/4", M6 | 0.234" | 0.500" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
1/4", M6 | 0.234" | 0.593" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
1/4", M6 | 0.234" | 0.593" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
1/4", M6 | 0.234" | 0.734" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 50 | 000000000 | 0000 | |
1/4", M6 | 0.234" | 1.500" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 25 | 000000000 | 00000 | |
1/4", M6 | 0.252" | 0.394" | 0.104"-0.116" | -40° | 180° | Rockwell R120 | Off-White | 100 | 000000000 | 00000 |
1/4", M6 | 0.252" | 0.709" | 0.073"-0.085" | -40° | 180° | Rockwell R120 | Off-White | 100 | 000000000 | 00000 |
5/16", M8 | 0.292" | 0.734" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
5/16", M8 | 0.292" | 0.734" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
5/16", M8 | 0.331" | 0.512" | 0.104"-0.116" | -40° | 180° | Rockwell R120 | Off-White | 50 | 000000000 | 00000 |
3/8", M10 | 0.350" | 0.734" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 00000 | |
3/8", M10 | 0.350" | 0.890" | 0.022"-0.042" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
3/8", M10 | 0.350" | 0.890" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 100 | 000000000 | 0000 | |
3/8", M10 | 0.350" | 1.260" | 0.052"-0.072" | -40° | 180° | Rockwell R120 | 10 | 000000000 | 0000 | |
3/8", M10 | 0.413" | 0.827" | 0.093"-0.104" | -40° | 180° | Rockwell R120 | Off-White | 50 | 000000000 | 00000 |
Polyethylene Plastic | ||||||||||
No. 3, M2.5 | 0.106" | 0.256" | 0.037"-0.049" | 35° | 145° | Durometer 43D | 100 | 000000000 | 00000 | |
No. 10, M5 | 0.209" | 0.433" | 0.045"-0.057" | 35° | 145° | Durometer 43D | 100 | 000000000 | 00000 | |
1/4", M6 | 0.252" | 0.472" | 0.057"-0.069" | 35° | 145° | Durometer 43D | 100 | 000000000 | 00000 | |
5/16", M8 | 0.331" | 0.669" | 0.073"-0.085" | 35° | 145° | Durometer 43D | 100 | 000000000 | 00000 | |
3/8", M10 | 0.413" | 0.709" | 0.053"-0.065" | 35° | 145° | Durometer 43D | Blue | 50 | 000000000 | 00000 |