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General Purpose Washers
Use these washers to evenly distribute the load under bolt or screw heads and nuts when fastening. They can also act as spacers.
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.
Zinc yellow-chromate and chrome-plated steel washers are corrosion resistant in wet environments.
USS washers generally have a larger ID and OD than SAE washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size  | ID | OD | Thick. | Hardness | Washer Designation | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3" | 3.125" | 5.000" | 0.228" to 0.310" | Not Rated | __ | 1 | 000000000 | 000000 |
18-8 Stainless Steel | ||||||||
| 3" | 3.125" | 5.000" | 0.228" to 0.310" | Not Rated | __ | 1 | 000000000 | 00000 |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||
| 3" | 3.125" | 5.500" | 0.249" to 0.327" | Rockwell C38 | USS | 1 | 000000000 | 00000 |
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.
Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc- and zinc yellow-chromate plated washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Pkg. Qty. | Pkg. | |
Hot-Dipped Galvanized Steel | |||||||
|---|---|---|---|---|---|---|---|
| 3" | 3.250" | 5.500" | 0.302"-0.332" | Rockwell B40 | 1 | 000000000 | 000000 |
USS Washers
USS washers generally have a larger ID and OD than SAE washers.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic. Zinc-plated steel washers are corrosion resistant in wet environments.
Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc-plated washers.
Black corrosion-resistant-coated steel washers resist chemicals and withstand 1,000 hours of salt spray.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3" | 3.125" | 5.500" | 0.249"-0.327" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 000000 |
Zinc-Plated Steel | ||||||||
| 3" | 3.125" | 5.500" | 0.249"-0.327" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
Hot-Dipped Galvanized Steel | ||||||||
| 3" | 3.125" | 5.500" | 0.249"-0.327" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
Black Corrosion-Resistant-Coated Steel | ||||||||
| 3" | 3.125" | 5.500" | 0.249"-0.327" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
Steel | ||||||||
| 3" | 3.125" | 5.500" | 0.249"-0.327" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
Washers for Structural Applications
Designed for use with structural screws, studs, and nuts, these washers are often used for construction and exterior building applications.
Hot-dipped galvanized washers are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
Wedge Lock Washers
These two-piece washers provide more locking power than split, tooth, and spring lock washers. Wedges on the inside lock the two pieces together, and serrations on the exterior grip surfaces to resist loosening from high vibration and shifting. Washers are reusable.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
316 stainless steel and zinc-flake-coated steel washers are comparable to NORD-LOCK® Series washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Washer Type | Hardness | Heat Treatment | Pkg. Qty. | Pkg. | |
316 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3", M76 | 3.110" | 4.330" | 0.340"-0.360" | Wedge Lock | Rockwell C51 | Case Hardened | 1 | 000000000 | 0000000 |