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ASME Washers
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Also known as Type B washers.
Narrow washers have a smaller OD than regular and wide washers for applications where SAE and USS washers won’t fit.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel washers have excellent corrosion resistance in most environments. They may be mildly magnetic. Black-oxide 18-8 stainless steel washers also have mild corrosion resistance in dry environments.
17-7 PH stainless steel washers have good chemical resistance and may be mildly magnetic. They’re stronger than 18-8 stainless steel washers.
Black-oxide steel washers have mild corrosion resistance in dry environments.
Zinc- and zinc yellow-chromate plated steel washers are corrosion resistant in wet environments.
Galvanized steel washers are 10 times as corrosion resistant as zinc-plated steel washers.
Copper and brass washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
Aluminum washers are lightweight and resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ASME Designation | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
No. 0 | Narrow | 0.068" | 0.125" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 00000 |
No. 1 | Narrow | 0.084" | 0.156" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
No. 2 | Narrow | 0.094" | 0.188" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
No. 4 | Narrow | 0.125" | 0.250" | 0.028"-0.036" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
No. 6 | Narrow | 0.156" | 0.312" | 0.028"-0.036" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
No. 8 | Narrow | 0.188" | 0.375" | 0.036"-0.045" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
No. 10 | Narrow | 0.203" | 0.406" | 0.036"-0.045" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
1/4" | Narrow | 0.281" | 0.500" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
5/16" | Narrow | 0.344" | 0.625" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
3/8" | Narrow | 0.406" | 0.734" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
7/16" | Narrow | 0.469" | 0.875" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
1/2" | Narrow | 0.531" | 1.000" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
9/16" | Narrow | 0.594" | 1.125" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
5/8" | Narrow | 0.656" | 1.250" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
3/4" | Narrow | 0.812" | 1.375" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
7/8" | Narrow | 0.938" | 1.469" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
1" | Narrow | 1.062" | 1.750" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
1 1/8" | Narrow | 1.188" | 2.000" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
1 1/4" | Narrow | 1.313" | 2.250" | 0.146"-0.174" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
M2.5 | Narrow | 3.100mm | 5.900mm | 0.600mm-0.900mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M3 | Narrow | 3.500mm | 6.700mm | 0.600mm-0.900mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M4 | Narrow | 4.700mm | 9.800mm | 0.800mm-1.200mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M5 | Narrow | 5.600mm | 10.600mm | 1.000mm-1.400mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M6 | Narrow | 6.700mm | 12.700mm | 1.200mm-1.750mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M10 | Narrow | 10.900mm | 19.800mm | 1.600mm-2.300mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M12 | Narrow | 13.400mm | 24.900mm | 2.000mm-2.800mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M14 | Narrow | 15.300mm | 27.700mm | 2.000mm-2.800mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M16 | Narrow | 17.400mm | 31.700mm | 2.500mm-3.500mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
18-8 Stainless Steel | |||||||||
No. 0 | Narrow | 0.068" | 0.125" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
No. 1 | Narrow | 0.084" | 0.156" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
No. 2 | Narrow | 0.094" | 0.188" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 00000 |
No. 4 | Narrow | 0.125" | 0.250" | 0.028"-0.036" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 00000 |
No. 6 | Narrow | 0.156" | 0.312" | 0.028"-0.036" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 0000 |
No. 8 | Narrow | 0.188" | 0.375" | 0.036"-0.045" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 00000 |
No. 10 | Narrow | 0.203" | 0.406" | 0.036"-0.045" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 00000 |
1/4" | Narrow | 0.281" | 0.500" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
5/16" | Narrow | 0.344" | 0.625" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
3/8" | Narrow | 0.406" | 0.734" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 00000 |
7/16" | Narrow | 0.469" | 0.875" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 0000 |
1/2" | Narrow | 0.531" | 1.000" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 0000 |
9/16" | Narrow | 0.594" | 1.125" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 0000 |
5/8" | Narrow | 0.656" | 1.250" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
3/4" | Narrow | 0.812" | 1.375" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
7/8" | Narrow | 0.938" | 1.469" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
1" | Narrow | 1.062" | 1.750" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
1 1/8" | Narrow | 1.188" | 2.000" | 0.090"-0.112" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
1 1/4" | Narrow | 1.313" | 2.250" | 0.146"-0.174" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
1 1/2" | Narrow | 1.562" | 2.750" | 0.118"-0.152" | Rockwell B68 | __ | 1 | 000000000 | 00000 |
1 3/4" | Narrow | 1.875" | 3.250" | 0.118"-0.152" | Rockwell B68 | __ | 1 | 000000000 | 00000 |
M2.5 | Narrow | 3.100mm | 5.900mm | 0.600mm-0.900mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M3 | Narrow | 3.500mm | 6.700mm | 0.600mm-0.900mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M4 | Narrow | 4.700mm | 9.800mm | 0.800mm-1.200mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M5 | Narrow | 5.600mm | 10.600mm | 1.000mm-1.400mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M6 | Narrow | 6.700mm | 12.700mm | 1.200mm-1.750mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M10 | Narrow | 10.900mm | 19.800mm | 1.600mm-2.300mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M12 | Narrow | 13.400mm | 24.900mm | 2.000mm-2.800mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M16 | Narrow | 17.400mm | 31.700mm | 2.500mm-3.500mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M20 | Narrow | 21.900mm | 38.400mm | 3.000mm-4.000mm | Not Rated | ASME B18.22M | 1 | 000000000 | 0000 |
M30 | Narrow | 32.500mm | 55.500mm | 4.000mm-5.100mm | Not Rated | ASME B18.22M | 1 | 000000000 | 00000 |
17-7 PH Stainless Steel | |||||||||
1/4" | Narrow | 0.281" | 0.500" | 0.051"-0.080" | Rockwell C40 | __ | 5 | 000000000 | 00000 |
Black-Oxide 18-8 Stainless Steel | |||||||||
No. 6 | Narrow | 0.156" | 0.312" | 0.028"-0.036" | Not Rated | __ | 50 | 000000000 | 00000 |
7/16" | Narrow | 0.469" | 0.875" | 0.056"-0.071" | Not Rated | __ | 10 | 000000000 | 00000 |
3/4" | Narrow | 0.805" | 1.375" | 0.050"-0.080" | Rockwell B68 | __ | 10 | 000000000 | 00000 |
Black-Oxide Steel | |||||||||
No. 10 | Narrow | 0.203" | 0.406" | 0.036"-0.045" | Not Rated | ASME B18.21.1 | 100 | 000000000 | 0000 |
No. 12 | Narrow | 0.234" | 0.438" | 0.036"-0.045" | Not Rated | ASME B18.21.1 | 100 | 000000000 | 00000 |
7/16" | Narrow | 0.469" | 0.875" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 00000 |
1/2" | Narrow | 0.531" | 1.000" | 0.051"-0.080" | Rockwell B80 | __ | 25 | 000000000 | 00000 |
3/4" | Narrow | 0.812" | 1.375" | 0.080"-0.115" | Rockwell B80 | __ | 10 | 000000000 | 00000 |
1" | Narrow | 1.062" | 1.750" | 0.080"-0.115" | Rockwell B80 | __ | 5 | 000000000 | 00000 |
1 1/4" | Narrow | 1.312" | 2.250" | 0.146"-0.174" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
Zinc-Plated Steel | |||||||||
No. 0 | Narrow | 0.068" | 0.125" | 0.022"-0.028" | Rockwell B40 | ASME B18.21.1 | 25 | 000000000 | 0000 |
No. 1 | Narrow | 0.084" | 0.156" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 00000 |
No. 2 | Narrow | 0.094" | 0.188" | 0.022"-0.028" | Rockwell B40 | ASME B18.21.1 | 50 | 000000000 | 0000 |
No. 4 | Narrow | 0.125" | 0.250" | 0.028"-0.036" | Rockwell B40 | ASME B18.21.1 | 50 | 000000000 | 0000 |
No. 6 | Narrow | 0.156" | 0.312" | 0.028"-0.036" | Rockwell B40 | ASME B18.21.1 | 50 | 000000000 | 00000 |
No. 8 | Narrow | 0.188" | 0.375" | 0.036"-0.045" | Rockwell B40 | ASME B18.21.1 | 25 | 000000000 | 0000 |
No. 10 | Narrow | 0.203" | 0.406" | 0.036"-0.045" | Rockwell B40 | ASME B18.21.1 | 25 | 000000000 | 0000 |
No. 12 | Narrow | 0.234" | 0.438" | 0.036"-0.045" | Not Rated | ASME B18.21.1 | 100 | 000000000 | 00000 |
1/4" | Narrow | 0.281" | 0.500" | 0.056"-0.071" | Rockwell B40 | ASME B18.21.1 | 25 | 000000000 | 00000 |
5/16" | Narrow | 0.344" | 0.625" | 0.056"-0.071" | Rockwell B40 | ASME B18.21.1 | 25 | 000000000 | 00000 |
3/8" | Narrow | 0.406" | 0.734" | 0.056"-0.071" | Rockwell B40 | ASME B18.21.1 | 25 | 000000000 | 00000 |
7/16" | Narrow | 0.469" | 0.875" | 0.056"-0.071" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |