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About Washers
More
Triple-Wave Washers
With three points of surface contact, these washers provide more stability than single-wave washers. They are curved and flexible to act like springs, compensating for tolerance variations and uneven surfaces. You can also use them to damp vibration.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Overall Ht. | Hardness | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 2 | 0.097" | 0.168" | 0.010" | 0.040" | Not Rated | 10 | 000000000 | 00000 |
| No. 3 | 0.102" | 0.195" | 0.005" | 0.017" | Rockwell C45 | 10 | 000000000 | 0000 |
| No. 4 | 0.127" | 0.250" | 0.005" | 0.025" | Not Rated | 10 | 000000000 | 0000 |
| No. 5 | 0.130" | 0.190" | 0.005" | 0.035" | Not Rated | 10 | 000000000 | 0000 |
| No. 6 | 0.147" | 0.243" | 0.006" | 0.050" | Not Rated | 10 | 000000000 | 0000 |
| No. 8 | 0.195" | 0.245" | 0.006" | 0.055" | Not Rated | 10 | 000000000 | 0000 |
| No. 10 | 0.205" | 0.375" | 0.005" | 0.041" | Not Rated | 10 | 000000000 | 0000 |
| No. 12 | 0.245" | 0.377" | 0.006" | 0.030" | Rockwell C45 | 10 | 000000000 | 0000 |
| 1/4", No. 15, No. 16, No. 18, 5/16" | 0.328" | 0.682" | 0.010" | 0.073" | Not Rated | 10 | 000000000 | 00000 |
| 5/16", No. 20, No. 24, 3/8" | 0.391" | 0.682" | 0.010" | 0.080" | Not Rated | 10 | 000000000 | 0000 |
| 3/8", 7/16" | 0.453" | 0.850" | 0.010" | 0.100" | Not Rated | 10 | 000000000 | 0000 |
| 7/16", 1/2" | 0.516" | 0.860" | 0.010" | 0.101" | Not Rated | 10 | 000000000 | 00000 |
| 1/2", 9/16" | 0.578" | 0.995" | 0.015" | 0.104" | Not Rated | 10 | 000000000 | 00000 |
| 5/8", 11/16" | 0.703" | 1.120" | 0.015" | 0.135" | Not Rated | 10 | 000000000 | 00000 |
| 3/4", 13/16" | 0.828" | 1.432" | 0.020" | 0.135" | Not Rated | 5 | 000000000 | 00000 |
| 7/8", 15/16" | 0.953" | 1.557" | 0.020" | 0.135" | Not Rated | 5 | 000000000 | 00000 |
| 1" | 1.000" | 1.682" | 0.020" | 0.135" | Not Rated | 5 | 000000000 | 00000 |
| 1 1/16" | 1.073" | 1.425" | 0.015" | 0.090" | Rockwell C45 | 5 | 000000000 | 00000 |
| 1 1/8" | 1.155" | 1.375" | 0.015" | 0.105" | Rockwell C45 | 5 | 000000000 | 00000 |
| 1 1/4" | 1.265" | 1.625" | 0.020" | 0.125" | Rockwell C45 | 1 | 000000000 | 0000 |
| 1 1/2" | 1.560" | 2.380" | 0.016" | 0.100" | Rockwell C45 | 1 | 000000000 | 0000 |
| M2 | 2.410mm | 4.220mm | 0.254mm | 0.889mm | Rockwell C40 | 10 | 000000000 | 00000 |
| M2.5 | 3.175mm | 6.350mm | 0.127mm | 0.508mm | Rockwell C40 | 10 | 000000000 | 00000 |
| M3 | 3.251mm | 4.749mm | 0.127mm | 0.762mm | Rockwell C40 | 10 | 000000000 | 00000 |
| M4 | 4.343mm | 7.137mm | 0.508mm | 1.520mm | Rockwell C40 | 10 | 000000000 | 00000 |
| M5 | 5.160mm | 9.525mm | 0.127mm | 0.787mm | Rockwell C40 | 10 | 000000000 | 00000 |
| M6 | 6.350mm | 11.099mm | 0.076mm | 0.889mm | Rockwell C40 | 5 | 000000000 | 0000 |
| M8 | 8.255mm | 12.573mm | 0.203mm | 1.220mm | Rockwell C40 | 5 | 000000000 | 0000 |
| M10 | 10.287mm | 13.970mm | 0.152mm | 1.524mm | Rockwell C40 | 5 | 000000000 | 0000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
| No. 2 | 0.100" | 0.171" | 0.010" | 0.040" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 4 | 0.130" | 0.255" | 0.005" | 0.025" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 6 | 0.150" | 0.245" | 0.006" | 0.050" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 8 | 0.200" | 0.250" | 0.006" | 0.055" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 10 | 0.208" | 0.385" | 0.005" | 0.041" | Rockwell C40 | 10 | 000000000 | 00000 |
316 Stainless Steel | ||||||||
| No. 2 | 0.100" | 0.171" | 0.010" | 0.040" | Rockwell C46 | 10 | 000000000 | 00000 |
| No. 4 | 0.130" | 0.255" | 0.005" | 0.025" | Rockwell C46 | 10 | 000000000 | 00000 |
| No. 5 | 0.133" | 0.192" | 0.005" | 0.035" | Rockwell C46 | 10 | 000000000 | 00000 |
| No. 6 | 0.150" | 0.245" | 0.006" | 0.050" | Rockwell C46 | 10 | 000000000 | 00000 |
| No. 8 | 0.200" | 0.250" | 0.006" | 0.055" | Rockwell C46 | 10 | 000000000 | 00000 |
| No. 10 | 0.208" | 0.385" | 0.005" | 0.041" | Rockwell C46 | 10 | 000000000 | 00000 |
Steel | ||||||||
| No. 2 | 0.095" | 0.181" | 0.010" | 0.035" | Rockwell C52 | 10 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.250" | 0.005" | 0.020" | Rockwell C52 | 25 | 000000000 | 00000 |
| No. 5 | 0.145" | 0.240" | 0.005" | 0.040" | Rockwell C52 | 25 | 000000000 | 00000 |
| No. 6, No. 7, No. 8 | 0.159" | 0.375" | 0.012" | 0.055" | Rockwell C44 | 50 | 000000000 | 00000 |
| No. 10 | 0.214" | 0.250" | 0.008" | 0.050" | Rockwell C44 | 100 | 000000000 | 00000 |
| No. 12 | 0.227" | 0.500" | 0.010" | 0.060" | Rockwell C52 | 25 | 000000000 | 00000 |
| 1/4" | 0.252" | 0.375" | 0.010" | 0.060" | Rockwell C44 | 50 | 000000000 | 00000 |
| 5/16" | 0.320" | 0.437" | 0.006" | 0.040" | Rockwell C44 | 50 | 000000000 | 00000 |
| 3/8" | 0.393" | 0.500" | 0.007" | 0.070" | Rockwell C44 | 50 | 000000000 | 00000 |
| 7/16" | 0.450" | 0.750" | 0.015" | 0.090" | Rockwell C44 | 50 | 000000000 | 00000 |
| 1/2" | 0.520" | 0.750" | 0.015" | 0.090" | Rockwell C44 | 25 | 000000000 | 0000 |
| 9/16" | 0.625" | 0.870" | 0.010" | 0.060" | Rockwell C52 | 25 | 000000000 | 00000 |
| 5/8" | 0.655" | 0.855" | 0.010" | 0.070" | Rockwell C44 | 50 | 000000000 | 00000 |
| 3/4" | 0.752" | 1.062" | 0.015" | 0.115" | Rockwell C44 | 25 | 000000000 | 00000 |
| 7/8" | 0.961" | 1.230" | 0.020" | 0.100" | Rockwell C52 | 10 | 000000000 | 0000 |
| 1" | 1.055" | 1.351" | 0.015" | 0.115" | Rockwell C47 | 25 | 000000000 | 00000 |
| 1 1/16" | 1.068" | 1.500" | 0.018" | 0.094" | Rockwell C52 | 10 | 000000000 | 0000 |
| 1 1/8" | 1.155" | 1.375" | 0.015" | 0.105" | Rockwell C52 | 10 | 000000000 | 0000 |
| 1 1/4" | 1.360" | 1.675" | 0.020" | 0.145" | Rockwell C52 | 5 | 000000000 | 0000 |
| 1 3/8" | 1.406" | 1.812" | 0.020" | 0.130" | Rockwell C52 | 5 | 000000000 | 0000 |
| 1 1/2" | 1.550" | 2.000" | 0.022" | 0.140" | Rockwell C52 | 5 | 000000000 | 0000 |
| 1 3/4" | 1.840" | 2.375" | 0.025" | 0.168" | Rockwell C52 | 5 | 000000000 | 00000 |
Metric Single-Wave Washers
Stainless Steel
Bronze
Black Steel
These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces. You can also use them to damp vibration.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
Bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Steel washers are harder and hold their shape better than stainless steel washers, but aren’t as corrosion resistant. They have a black finish from heat treatment.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID, mm | OD, mm | Thick., mm | Overall Ht., mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| M2.5 | 2.7 | 5.0 | 0.3 | 1.4 | Not Rated | DIN 137B | 50 | 000000000 | 000000 |
| M3 | 3.2 | 8.0 | 0.5 | 1.6 | Not Rated | DIN 137B | 100 | 000000000 | 0000 |
| M3.5 | 3.7 | 8.0 | 0.5 | 1.8 | Not Rated | DIN 137B | 100 | 000000000 | 00000 |
| M4 | 4.3 | 9.0 | 0.5 | 2.0 | Not Rated | DIN 137B | 100 | 000000000 | 0000 |
| M5 | 5.3 | 11.0 | 0.5 | 2.2 | Not Rated | DIN 137B | 100 | 000000000 | 0000 |
| M6 | 6.4 | 12.0 | 0.5 | 2.6 | Not Rated | DIN 137B | 100 | 000000000 | 0000 |
| M8 | 8.4 | 15.0 | 0.8 | 3.0 | Not Rated | DIN 137B | 50 | 000000000 | 0000 |
| M10 | 10.5 | 21.0 | 1.0 | 4.2 | Not Rated | DIN 137B | 25 | 000000000 | 0000 |
| M12 | 13.0 | 24.0 | 1.2 | 5.0 | Not Rated | DIN 137B | 10 | 000000000 | 0000 |
| M14 | 15.0 | 28.0 | 1.6 | 6.0 | Not Rated | DIN 137B | 10 | 000000000 | 00000 |
| M16 | 17.0 | 30.0 | 1.6 | 6.4 | Not Rated | DIN 137B | 10 | 000000000 | 0000 |
| M18 | 19.0 | 34.0 | 1.6 | 6.6 | Not Rated | DIN 137B | 10 | 000000000 | 00000 |
| M20 | 21.0 | 36.0 | 1.6 | 7.4 | Not Rated | DIN 137B | 5 | 000000000 | 0000 |
| M24 | 25.0 | 44.0 | 1.8 | 8.2 | Not Rated | DIN 137B | 5 | 000000000 | 00000 |
Bronze | |||||||||
| M3 | 3.2 | 8.0 | 0.5 | 1.6 | Not Rated | DIN 137B | 25 | 000000000 | 00000 |
| M4 | 4.3 | 9.0 | 0.5 | 2.0 | Not Rated | DIN 137B | 25 | 000000000 | 00000 |
| M5 | 5.3 | 11.0 | 0.5 | 2.2 | Not Rated | DIN 137B | 10 | 000000000 | 0000 |
| M6 | 6.4 | 12.0 | 0.5 | 2.6 | Not Rated | DIN 137B | 10 | 000000000 | 0000 |
| M8 | 8.4 | 15.0 | 0.8 | 3.0 | Not Rated | DIN 137B | 5 | 000000000 | 0000 |
| M10 | 10.5 | 21.0 | 1.0 | 4.2 | Not Rated | DIN 137B | 1 | 000000000 | 0000 |
| M12 | 13.0 | 24.0 | 1.2 | 5.0 | Not Rated | DIN 137B | 1 | 000000000 | 0000 |
Black-Oxide Steel | |||||||||
| M3 | 3.2 | 8.0 | 0.5 | 1.6 | Rockwell C42 | DIN 137B | 100 | 000000000 | 0000 |
| M4 | 4.3 | 9.0 | 0.5 | 2.0 | Rockwell C42 | DIN 137B | 100 | 000000000 | 0000 |
| M5 | 5.3 | 11.0 | 0.5 | 2.2 | Rockwell C42 | DIN 137B | 100 | 000000000 | 0000 |
| M6 | 6.4 | 12.0 | 0.5 | 2.6 | Rockwell C42 | DIN 137B | 100 | 000000000 | 0000 |
| M7 | 7.4 | 14.0 | 0.8 | 3.0 | Rockwell C42 | DIN 137B | 100 | 000000000 | 00000 |
| M8 | 8.4 | 15.0 | 0.8 | 3.0 | Rockwell C42 | DIN 137B | 100 | 000000000 | 00000 |
| M10 | 10.5 | 21.0 | 1.0 | 4.2 | Rockwell C42 | DIN 137B | 100 | 000000000 | 00000 |
| M12 | 13.0 | 24.0 | 1.2 | 5.0 | Rockwell C42 | DIN 137B | 25 | 000000000 | 0000 |
| M14 | 15.0 | 28.0 | 1.6 | 6.0 | Rockwell C42 | DIN 137B | 25 | 000000000 | 00000 |
| M16 | 17.0 | 30.0 | 1.6 | 6.4 | Rockwell C42 | DIN 137B | 25 | 000000000 | 00000 |
| M20 | 21.0 | 36.0 | 1.6 | 7.4 | Rockwell C42 | DIN 137B | 10 | 000000000 | 0000 |
| M24 | 25.0 | 44.0 | 1.8 | 8.2 | Rockwell C42 | DIN 137B | 5 | 000000000 | 00000 |
Single-Wave Washers
These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces. You can also use them to damp vibration.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Overall Ht. | Hardness | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.072" | 0.170" | 0.010" | 0.050" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 2 | 0.095" | 0.130" | 0.004" | 0.040" | Rockwell C40 | 10 | 000000000 | 0000 |
| No. 4 | 0.121" | 0.240" | 0.008" | 0.056" | Rockwell C40 | 10 | 000000000 | 0000 |
| No. 5 | 0.135" | 0.245" | 0.004" | 0.055" | Rockwell C40 | 10 | 000000000 | 0000 |
| No. 6 | 0.148" | 0.270" | 0.005" | 0.062" | Rockwell C40 | 10 | 000000000 | 0000 |
| No. 8 | 0.165" | 0.285" | 0.006" | 0.053" | Rockwell C40 | 10 | 000000000 | 0000 |
| No. 10 | 0.200" | 0.300" | 0.010" | 0.061" | Rockwell C40 | 10 | 000000000 | 0000 |
| 1/4" | 0.260" | 0.485" | 0.010" | 0.070" | Rockwell C40 | 10 | 000000000 | 00000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
| No. 0 | 0.072" | 0.170" | 0.010" | 0.050" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 4 | 0.121" | 0.240" | 0.008" | 0.056" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 5 | 0.135" | 0.245" | 0.004" | 0.055" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 8 | 0.165" | 0.285" | 0.006" | 0.053" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 10 | 0.200" | 0.300" | 0.010" | 0.061" | Rockwell C40 | 10 | 000000000 | 00000 |
| 1/4" | 0.260" | 0.485" | 0.010" | 0.070" | Rockwell C40 | 10 | 000000000 | 00000 |
316 Stainless Steel | ||||||||
| No. 0 | 0.072" | 0.170" | 0.010" | 0.050" | Rockwell C35 | 10 | 000000000 | 00000 |
| No. 2 | 0.095" | 0.130" | 0.004" | 0.040" | Rockwell C35 | 10 | 000000000 | 00000 |
| No. 4 | 0.121" | 0.240" | 0.008" | 0.056" | Rockwell C35 | 10 | 000000000 | 00000 |
| No. 6 | 0.148" | 0.270" | 0.005" | 0.062" | Rockwell C35 | 10 | 000000000 | 00000 |
| No. 8 | 0.165" | 0.285" | 0.006" | 0.053" | Rockwell C35 | 10 | 000000000 | 00000 |
| No. 10 | 0.200" | 0.300" | 0.010" | 0.061" | Rockwell C35 | 10 | 000000000 | 00000 |
| 1/4" | 0.260" | 0.485" | 0.010" | 0.070" | Rockwell C35 | 5 | 000000000 | 0000 |
Steel | ||||||||
| No. 2 | 0.098" | 0.188" | 0.005" | 0.025" | Rockwell C44 | 10 | 000000000 | 0000 |
| No. 4 | 0.125" | 0.290" | 0.005" | 0.090" | Rockwell C44 | 10 | 000000000 | 0000 |
| No. 6 | 0.160" | 0.438" | 0.008" | 0.103" | Rockwell C44 | 10 | 000000000 | 0000 |
| No. 8 | 0.185" | 0.300" | 0.005" | 0.070" | Rockwell C44 | 10 | 000000000 | 0000 |
| No. 8 | 0.193" | 0.359" | 0.012" | 0.060" | Rockwell C44 | 10 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.437" | 0.010" | 0.800" | Rockwell C44 | 10 | 000000000 | 0000 |
| 1/4" | 0.269" | 0.423" | 0.008" | 0.060" | Rockwell C44 | 10 | 000000000 | 0000 |