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About Washers
More
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" | Not Rated | 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. 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 |
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.
Water- and Steam-Resistant Plastic Washers
Low moisture absorption and good heat resistance make these washers suitable for wet and harsh environments. All are good electrical insulators.
Fiberglass washers are stronger than Delrin® acetal plastic washers and have excellent resistance to salt water. Color ranges from light green to light tan.
Delrin® acetal plastic washers combine a slippery, wear-resistant surface with good strength and rigidity.
For technical drawings and 3-D models, click on a part number.
High-Temperature Plastic Washers
These are among the most heat resistant plastic washers we carry. All have good chemical resistance.
Ultem PEI washers are flame retardant, UV stable, and can be used outdoors. They also offer excellent electrical-insulating properties.
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.