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General Purpose Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/901/90107a029p1-b01-digitall@halfx_636923080856299297.png?ver=imagenotfound)
Use these washers to evenly distribute the load under bolt or screw heads and nuts when fastening. They can also act as spacers.
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" to 0.032" | Rockwell C40 | __ | 10 | 000000000 | 000000 |
No. 2 | 0.094" | 0.312" | 0.018" to 0.032" | Rockwell C40 | __ | 10 | 000000000 | 0000 |
No. 3 | 0.109" | 0.281" | 0.018" to 0.032" | Rockwell C40 | __ | 10 | 000000000 | 00000 |
No. 4 | 0.125" | 0.312" | 0.024" to 0.038" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
No. 5 | 0.141" | 0.281" | 0.025" to 0.039" | Rockwell C40 | __ | 5 | 000000000 | 00000 |
No. 6 | 0.156" | 0.312" | 0.024" to 0.038" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
No. 8 | 0.174" | 0.375" | 0.024" to 0.038" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
No. 10 | 0.203" | 0.438" | 0.024" to 0.038" | Rockwell C40 | __ | 5 | 000000000 | 0000 |
1/4" | 0.312" | 0.750" | 0.058" to 0.068" | Rockwell C40 | __ | 10 | 000000000 | 0000 |
5/16" | 0.375" | 0.875" | 0.073" to 0.083" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 0000 |
3/8" | 0.438" | 1.000" | 0.073" to 0.083" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 0000 |
7/16" | 0.500" | 1.250" | 0.073" to 0.083" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 0000 |
1/2" | 0.562" | 1.375" | 0.073" to 0.083" | Rockwell C40 | __ | 1 | 000000000 | 0000 |
9/16" | 0.625" | 1.500" | 0.085" to 0.095" | Rockwell C40 | __ | 1 | 000000000 | 0000 |
5/8" | 0.688" | 1.750" | 0.120" to 0.141" | Rockwell C40 | __ | 1 | 000000000 | 00000 |
3/4" | 0.812" | 2.000" | 0.120" to 0.141" | Rockwell C40 | __ | 1 | 000000000 | 00000 |
1" | 1.062" | 2.000" | 0.120" to 0.141" | Rockwell C40 | ASME B18.21.1 | 1 | 000000000 | 00000 |
Metric General Purpose Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/909/90965a170p1-b01-digitall@halfx_637152062385479458.png?ver=imagenotfound)
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.
Washers that meet ISO 7089, 7090, 7091, and 7092 (formerly DIN 125, 126, and 433), meet international standards for fastener dimensions. The ISO 7091 washers have a slightly rougher surface than a typical flat washer.
For technical drawings and 3-D models, click on a part number.
Metric Oversized Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/952/95211a190p1-b01-digitall@halfx_637154530156260426.png?ver=imagenotfound)
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.
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.
Washers that meet DIN and ISO specifications meet international standards for washer dimensions. ISO 8738 is formerly DIN 1440. ISO 7093 is formerly DIN 9021.
For technical drawings and 3-D models, click on a part number.
SAE Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/966/96659a108p1-b01-digitall@halfx_636840247853646657.png?ver=imagenotfound)
SAE washers generally have a smaller ID and OD than USS 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 | ||||||||
---|---|---|---|---|---|---|---|---|
1/4" | 0.281" | 0.625" | 0.051"-0.080" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 00000 |
5/16" | 0.343" | 0.688" | 0.051"-0.080" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 0000 |
3/8" | 0.406" | 0.812" | 0.051"-0.080" | Rockwell C40 | ASME B18.21.1 | 5 | 000000000 | 0000 |
5/8" | 0.656" | 1.312" | 0.074"-0.121" | Rockwell C40 | ASME B18.21.1 | 1 | 000000000 | 0000 |
ASME Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/947/94744a289p1-b01-digitall@halfx_636840396713000544.png?ver=imagenotfound)
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.
17-7 PH stainless steel washers have good chemical resistance and may be mildly magnetic. They’re stronger than 18-8 stainless steel washers.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ASME Designation | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
17-7 PH Stainless Steel | ||||||||
---|---|---|---|---|---|---|---|---|
1/4" | Narrow | 0.281" | 0.500" | 0.051"-0.080" | Rockwell C40 | 5 | 000000000 | 000000 |