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About Washers
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General Purpose Washers
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel and 17-7 PH stainless steel washers have good chemical resistance and may be mildly magnetic. Black-oxide 18-8 stainless steel washers have a matte-black finish.
Copper, brass, and bronze washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
| No. 1 | 0.080" | 0.156" | 0.010"-0.020" | Not Rated | 50 | 000000000 | 00000 |
18-8 Stainless Steel | |||||||
| No. 1 | 0.080" | 0.156" | 0.010"-0.020" | Not Rated | 50 | 000000000 | 0000 |
Black-Oxide 18-8 Stainless Steel | |||||||
| No. 1 | 0.080" | 0.156" | 0.010"-0.020" | Rockwell B68 | 50 | 000000000 | 00000 |
Brass | |||||||
| No. 1 | 0.078" | 0.156" | 0.005"-0.024" | Rockwell B60 | 25 | 000000000 | 0000 |
Oversized Washers
Compared to our general purpose washers, these have exaggerated diameters and/or thicknesses for covering oversized holes or for use as spacers and levelers.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel and 17-4 PH stainless steel washers have good chemical resistance and may be mildly magnetic. Black-oxide 18-8 stainless steel washers have a matte-black finish.
Black-oxide steel washers have mild corrosion resistance in dry environments.
Brass washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
| No. 1 | 0.080" | 0.188" | 0.040"-0.060" | Rockwell B68 | 50 | 000000000 | 000000 |
Black-Oxide 18-8 Stainless Steel | |||||||
| No. 1 | 0.080" | 0.188" | 0.040"-0.060" | Rockwell B68 | 50 | 000000000 | 00000 |
Black-Oxide Steel | |||||||
| No. 1 | 0.078" | 0.156" | 0.005"-0.024" | Rockwell 15N80 | 25 | 000000000 | 0000 |
Brass | |||||||
| No. 1 | 0.080" | 0.156" | 0.010"-0.020" | Not Rated | 50 | 000000000 | 0000 |
Mil. Spec. Washers
Choose these washers for their adherence to strict military standards for material and construction.
18-8 stainless steel and 321 stainless steel washers have excellent corrosion resistance in most environments. They may be mildly magnetic. Passivated 18-8 stainless steel washers have added protection against oxidation and corrosion. Black-oxide 18-8 stainless steel washers have a matte-black finish.
Cadmium- and zinc yellow-chromate plated steel washers are corrosion resistant in wet environments.
Copper and brass washers are corrosion resistant in wet environments, nonmagnetic, and electrically conductive. Black-oxide brass washers have a matte-black finish. Nickel copper washers (also known as Monel) are more corrosion resistant than stainless steel. They have excellent resistance to salt water and some acids.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Passivated 18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
MS15795/NASM15795 | ||||||||
| No. 1 | 0.078" | 0.188" | 0.016"-0.025" | Rockwell B70 | MS15795-801; NASM15795 | 500 | 000000000 | 000000 |
Passivated Black-Oxide 18-8 Stainless Steel | ||||||||
MS15795/NASM15795 | ||||||||
| No. 1 | 0.078" | 0.188" | 0.016"-0.025" | Rockwell B68 | MS15795-801B; NASM15795 | 100 | 000000000 | 0000 |
Cadmium-Plated Steel | ||||||||
MS27183 | ||||||||
| No. 1 | 0.078" | 0.188" | 0.016"-0.025" | Rockwell B40 | MS27183-1 | 100 | 000000000 | 0000 |
Copper | ||||||||
MS15795 | ||||||||
| No. 1 | 0.078" | 0.188" | 0.016"-0.025" | Rockwell F86 | MS15795-501 | 100 | 000000000 | 00000 |
Black-Oxide Brass | ||||||||
MS15795 | ||||||||
| No. 1 | 0.078" | 0.188" | 0.016"-0.025" | Rockwell B60 | MS15795-901 | 10 | 000000000 | 0000 |
Nickel Copper | ||||||||
MS15795 | ||||||||
| No. 1 | 0.078" | 0.188" | 0.016"-0.025" | Rockwell B89 | MS15795-401 | 25 | 000000000 | 0000 |
ASME Washers for Soft Material
Also known as Type B washers, these distribute your fastener's load over a larger surface area than other washers to limit damage to soft materials.
18-8 stainless steel washers have excellent corrosion resistance in most environments and may be mildly magnetic.
Zinc-plated steel washers are corrosion resistant in wet environments.
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 | ASME Designation | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| No. 1 | Narrow | 0.084" | 0.156" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 00000 |
| No. 1 | Regular | 0.084" | 0.219" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 0000 |
| No. 1 | Wide | 0.084" | 0.281" | 0.028"-0.036" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
316 Stainless Steel | |||||||||
| No. 1 | Narrow | 0.084" | 0.156" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 0000 |
| No. 1 | Regular | 0.084" | 0.219" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 0000 |
| No. 1 | Wide | 0.084" | 0.281" | 0.028"-0.036" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
Zinc-Plated Steel | |||||||||
| No. 1 | Narrow | 0.084" | 0.156" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 0000 |
| No. 1 | Regular | 0.084" | 0.219" | 0.022"-0.028" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 0000 |
| No. 1 | Wide | 0.084" | 0.281" | 0.028"-0.036" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 0000 |
Plastic Washers
These plastic washers are good electrical insulators.
Nylon washers are stronger than polycarbonate and UHMW washers. Exposure to moisture may cause them to expand.
For technical drawings and 3-D models, click on a part number.
Split Lock Washers
As a screw is tightened, these washers flatten to add tension to the joint and prevent loosening from small amounts of vibration.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.