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About Washers
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General Purpose Washers
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.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
17-7 PH Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.062" | 0.156" | 0.018"-0.032" | Rockwell C40 | __ | 10 | 000000000 | 000000 |
| No. 2 | 0.094" | 0.312" | 0.018"-0.032" | Rockwell C40 | __ | 10 | 000000000 | 00000 |
| No. 3 | 0.109" | 0.281" | 0.018"-0.032" | Rockwell C40 | __ | 10 | 000000000 | 00000 |
| No. 4 | 0.125" | 0.312" | 0.024"-0.038" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
| No. 5 | 0.141" | 0.281" | 0.025"-0.039" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
| No. 6 | 0.156" | 0.312" | 0.024"-0.038" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
| No. 8 | 0.174" | 0.375" | 0.024"-0.038" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
| No. 10 | 0.203" | 0.438" | 0.024"-0.038" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
| 1/4" | 0.312" | 0.750" | 0.058"-0.068" | Rockwell C40 | __ | 10 | 000000000 | 00000 |
| 5/16" | 0.375" | 0.875" | 0.073"-0.083" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.000" | 0.073"-0.083" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.250" | 0.073"-0.083" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1/2" | 0.562" | 1.375" | 0.073"-0.083" | Rockwell C40 | __ | 1 | 000000000 | 0000 |
| 9/16" | 0.625" | 1.500" | 0.085"-0.095" | Rockwell C40 | __ | 1 | 000000000 | 0000 |
| 5/8" | 0.688" | 1.750" | 0.120"-0.141" | Rockwell C40 | __ | 1 | 000000000 | 0000 |
| 3/4" | 0.812" | 2.000" | 0.120"-0.141" | Rockwell C40 | __ | 1 | 000000000 | 00000 |
| 1" | 1.062" | 2.000" | 0.120"-0.141" | Rockwell C40 | ASME B18.21.1 | 1 | 000000000 | 0000 |
Metric General Purpose Washers
Use these metric washers to evenly distribute the load under bolt or screw heads and nuts when fastening. They can also act as spacers.
Stainless steel washers are more corrosion resistant than steel washers, and almost as strong. 18-8 and 17-7 PH stainless steel washers will hold up in humid, damp, and washdown environments, but will corrode if exposed to salt water or chemicals. 17-7 PH stainless steel washers are stronger than 18-8 stainless steel.
For technical drawings and 3-D models, click on a part number.
Metric Oversized Washers
Compared to our general purpose washers, these have exaggerated diameters and/or thicknesses. Use them to cover oversized holes, hold heavy fastening loads, or as spacers and levelers.
These washers meet various DIN and ISO specifications, which are international standards for washer dimensions. ISO 8738 is formerly DIN 1440.ISO 7093 is formerly DIN 9021.
Stainless steel washers are more corrosion resistant than steel washers, and almost as strong. Use them in damp and washdown applications without worrying about rust. 18-8 stainless steel and 17-7 PH stainless steel washers have similar qualities to one another, except 17-7 PH stainless steel washers are stronger.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID, mm | OD, mm | Thick., mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
17-7 PH Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| M2 | 2.2 | 7.0 | 0.6-1.0 | Rockwell C40 | DIN 9021 | 10 | 000000000 | 000000 |
| M2.5 | 2.7 | 8.0 | 0.7-0.9 | Rockwell C40 | DIN 9021 | 10 | 000000000 | 00000 |
| M3 | 3.2 | 9.0 | 0.7-0.9 | Rockwell C40 | DIN 9021 | 10 | 000000000 | 00000 |
| M4 | 4.3 | 14.0 | 2.5-3.4 | Rockwell C40 | DIN 9021 | 1 | 000000000 | 00000 |
| M6 | 7.0 | 13.6 | 2.7-4.0 | Rockwell C40 | DIN 9021 | 1 | 000000000 | 00000 |
| M8 | 8.4 | 22.0 | 4.5-5.4 | Rockwell C40 | DIN 9021 | 1 | 000000000 | 00000 |