About Washers
More
Belleville Spring Lock Washers
Also known as conical washers, these have a slightly cupped shape that gives them spring-like flexibility to grip tighter than split and tooth lock washers. They minimize loosening from wear, temperature changes, and vibration. Load-rated Belleville disc springs are also available.
18-8 stainless steel and 17-7 PH stainless steel washers have good chemical resistance and may be mildly magnetic. 17-7 PH stainless steel washers are stronger than 18-8 stainless steel washers.
Zinc-plated steel washers have an outer layer of zinc that protects the inner steel from rust in wet environments and extends the life of the washer.
For extra gripping power, use washers with a serrated top.
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 | ||||||||
---|---|---|---|---|---|---|---|---|
1/4" | 0.260" | 0.683" | 0.048"-0.052" | 0.090" | Rockwell C38 | 10 | 000000000 | 00000 |
5/16" | 0.324" | 0.807" | 0.060"-0.064" | 0.100" | Rockwell C38 | 10 | 000000000 | 0000 |
3/8" | 0.389" | 0.930" | 0.070"-0.076" | 0.112" | Rockwell C38 | 10 | 000000000 | 0000 |
1/2" | 0.519" | 1.179" | 0.091"-0.100" | 0.152" | Rockwell C38 | 5 | 000000000 | 0000 |
5/8" | 0.644" | 1.500" | 0.130"-0.140" | 0.177" | Rockwell C38 | 1 | 000000000 | 0000 |
3/4" | 0.773" | 1.750" | 0.130"-0.140" | 0.195" | Rockwell C38 | 1 | 000000000 | 0000 |
M3 | 3.200mm | 8.000mm | 0.800mm | 1.000mm | Rockwell C38 | 25 | 000000000 | 00000 |
M3 | 3.800mm | 8.100mm | 0.600mm | 1.000mm | Rockwell C38 | 25 | 000000000 | 00000 |
M6 | 6.200mm | 14.300mm | 1.000mm | 1.800mm | Rockwell C38 | 10 | 000000000 | 00000 |
M10 | 10.200mm | 20.700mm | 1.500mm | 2.300mm | Rockwell C38 | 10 | 000000000 | 00000 |
M10 | 10.200mm | 23.800mm | 1.800mm | 3.000mm | Rockwell C38 | 10 | 000000000 | 00000 |
17-7 PH Stainless Steel | ||||||||
No. 6 | 0.143" | 0.341" | 0.023"-0.027" | 0.042" | Rockwell C38 | 50 | 000000000 | 00000 |
No. 8 | 0.169" | 0.403" | 0.029"-0.033" | 0.050" | Rockwell C38 | 50 | 000000000 | 00000 |
No. 10 | 0.197" | 0.465" | 0.033"-0.037" | 0.057" | Rockwell C38 | 25 | 000000000 | 0000 |
1/4" | 0.252" | 0.551" | 0.048"-0.052" | 0.067" | Rockwell C38 | 25 | 000000000 | 0000 |
5/16" | 0.331" | 0.709" | 0.074"-0.082" | 0.102" | Rockwell C38 | 10 | 000000000 | 0000 |
3/8" | 0.413" | 0.906" | 0.074"-0.082" | 0.106" | Rockwell C38 | 10 | 000000000 | 0000 |
1/2" | 0.512" | 1.142" | 0.093"-0.103" | 0.130" | Rockwell C38 | 5 | 000000000 | 0000 |
5/8" | 0.669" | 1.535" | 0.131"-0.145" | 0.185" | Rockwell C38 | 1 | 000000000 | 0000 |
M3 | 3.200mm | 7.000mm | 0.600mm | 0.900mm | Rockwell C38 | 10 | 000000000 | 00000 |
M4 | 4.200mm | 8.000mm | 0.400mm | 0.800mm | Rockwell C38 | 25 | 000000000 | 00000 |
M4 | 4.200mm | 9.000mm | 0.900mm | 1.300mm | Rockwell C38 | 10 | 000000000 | 00000 |
M5 | 5.200mm | 11.900mm | 0.800mm | 1.400mm | Rockwell C38 | 5 | 000000000 | 0000 |
M5 | 5.300mm | 11.000mm | 0.900mm | 1.400mm | Rockwell C38 | 10 | 000000000 | 00000 |
M6 | 6.200mm | 13.900mm | 1.000mm | 1.800mm | Rockwell C38 | 10 | 000000000 | 0000 |
M12 | 12.300mm | 23.800mm | 1.800mm | 2.700mm | Rockwell C38 | 1 | 000000000 | 0000 |
M16 | 16.100mm | 38.700mm | 3.800mm | 5.700mm | Rockwell C38 | 1 | 000000000 | 0000 |
Black-Oxide Stainless Steel | ||||||||
M3 | 3.200mm | 8.000mm | 0.500mm | 0.700mm | Rockwell C38 | 10 | 000000000 | 0000 |
M4 | 4.200mm | 10.000mm | 0.500mm | 0.750mm | Rockwell C38 | 10 | 000000000 | 0000 |
M5 | 5.200mm | 10.000mm | 0.500mm | 0.750mm | Rockwell C38 | 10 | 000000000 | 0000 |
M6 | 6.200mm | 12.000mm | 0.500mm | 0.850mm | Rockwell C38 | 10 | 000000000 | 0000 |
M7 | 7.200mm | 14.000mm | 0.500mm | 0.900mm | Rockwell C38 | 5 | 000000000 | 0000 |
M8 | 8.200mm | 16.000mm | 0.600mm | 1.050mm | Rockwell C38 | 5 | 000000000 | 0000 |
Zinc-Plated Steel | ||||||||
3/4" | 0.773" | 1.750" | 0.127"-0.141" | 0.171" | Rockwell C40 | 5 | 000000000 | 00000 |
7/8" | 0.901" | 2.000" | 0.146"-0.162" | 0.196" | Rockwell C40 | 1 | 000000000 | 0000 |
1" | 1.030" | 2.250" | 0.163"-0.181" | 0.219" | Rockwell C40 | 1 | 000000000 | 0000 |
1 1/8" | 1.155" | 2.500" | 0.182"-0.202" | 0.243" | Rockwell C40 | 1 | 000000000 | 00000 |
1 1/4" | 1.280" | 2.750" | 0.200"-0.222" | 0.267" | Rockwell C40 | 1 | 000000000 | 00000 |
1 3/8" | 1.405" | 3.000" | 0.219"-0.243" | 0.292" | Rockwell C40 | 1 | 000000000 | 00000 |
1 1/2" | 1.530" | 3.250" | 0.238"-0.263" | 0.315" | Rockwell C40 | 1 | 000000000 | 00000 |
M6 | 6.200mm | 14.300mm | 1.100mm | 1.700mm | Rockwell C40 | 25 | 000000000 | 00000 |
M8 | 8.400mm | 18.000mm | 2.000mm | 2.400mm | Rockwell C40 | 10 | 000000000 | 0000 |
M10 | 10.300mm | 20.500mm | 1.500mm | 2.600mm | Rockwell C40 | 10 | 000000000 | 0000 |
M10 | 10.300mm | 26.900mm | 2.000mm | 3.700mm | Rockwell C40 | 10 | 000000000 | 00000 |
M20 | 20.500mm | 44.500mm | 3.300mm | 4.300mm | Rockwell C40 | 1 | 000000000 | 0000 |
Zinc-Plated Steel with Serrated Top | ||||||||
No. 6 | 0.142" | 0.362" | 0.025"-0.031" | 0.047" | Rockwell C40 | 50 | 000000000 | 0000 |
No. 8 | 0.161" | 0.402" | 0.036"-0.042" | 0.059" | Rockwell C40 | 10 | 000000000 | 0000 |
No. 10 | 0.201" | 0.481" | 0.047"-0.053" | 0.073" | Rockwell C40 | 10 | 000000000 | 0000 |
1/4" | 0.254" | 0.559" | 0.049"-0.055" | 0.087" | Rockwell C40 | 50 | 000000000 | 0000 |
5/16" | 0.323" | 0.717" | 0.052"-0.058" | 0.095" | Rockwell C40 | 25 | 000000000 | 0000 |
3/8" | 0.402" | 0.877" | 0.059"-0.065" | 0.108" | Rockwell C40 | 25 | 000000000 | 0000 |
7/16" | 0.489" | 1.074" | 0.075"-0.082" | 0.120" | Rockwell C40 | 10 | 000000000 | 0000 |
5/8" | 0.646" | 1.273" | 0.095"-0.101" | 0.156" | Rockwell C40 | 5 | 000000000 | 0000 |
Steel with Serrated Top | ||||||||
No. 6 | 0.142" | 0.362" | 0.025"-0.031" | 0.047" | Rockwell C40 | 100 | 000000000 | 00000 |
No. 8 | 0.161" | 0.402" | 0.036"-0.042" | 0.059" | Rockwell C40 | 100 | 000000000 | 00000 |
No. 10 | 0.201" | 0.481" | 0.047"-0.053" | 0.073" | Rockwell C40 | 50 | 000000000 | 0000 |
1/4" | 0.254" | 0.559" | 0.049"-0.055" | 0.087" | Rockwell C40 | 50 | 000000000 | 0000 |
5/16" | 0.323" | 0.717" | 0.052"-0.058" | 0.095" | Rockwell C40 | 50 | 000000000 | 00000 |
3/8" | 0.402" | 0.877" | 0.059"-0.065" | 0.108" | Rockwell C40 | 25 | 000000000 | 00000 |
7/16" | 0.489" | 1.074" | 0.075"-0.081" | 0.120" | Rockwell C40 | 10 | 000000000 | 0000 |
1/2" | 0.512" | 1.074" | 0.075"-0.081" | 0.120" | Rockwell C40 | 10 | 000000000 | 0000 |
5/8" | 0.646" | 1.273" | 0.095"-0.101" | 0.156" | Rockwell C40 | 5 | 000000000 | 0000 |