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About Washers
More
USS Washers
USS washers generally have a larger ID and OD than SAE washers.
Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc-plated 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. | |
Hot-Dipped Galvanized Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.312" | 0.750" | 0.051"-0.080" | Not Rated | USS Standards | 100 | 000000000 | 00000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.104" | Not Rated | USS Standards; ASME B18.21.1 | 100 | 000000000 | 0000 |
| 3/8" | 0.438" | 1.000" | 0.064"-0.104" | Not Rated | USS Standards; ASME B18.21.1 | 100 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.250" | 0.064"-0.104" | Not Rated | USS Standards; ASME B18.21.1 | 100 | 000000000 | 00000 |
| 1/2" | 0.562" | 1.375" | 0.086"-0.132" | Not Rated | USS Standards; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 9/16" | 0.625" | 1.469" | 0.086"-0.132" | Not Rated | USS Standards; ASME B18.21.1 | 25 | 000000000 | 0000 |
| 5/8" | 0.688" | 1.750" | 0.108"-0.160" | Not Rated | USS Standards; ASME B18.21.1 | 25 | 000000000 | 0000 |
| 3/4" | 0.812" | 2.000" | 0.122"-0.177" | Not Rated | USS Standards; ASME B18.21.1 | 25 | 000000000 | 0000 |
| 7/8" | 0.938" | 2.250" | 0.136"-0.192" | Not Rated | USS Standards; ASME B18.21.1 | 10 | 000000000 | 0000 |
| 1" | 1.062" | 2.500" | 0.136"-0.192" | Not Rated | USS Standards; ASME B18.21.1 | 10 | 000000000 | 0000 |
| 1 1/8" | 1.250" | 2.750" | 0.136"-0.192" | Not Rated | USS Standards; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1 1/4" | 1.375" | 3.000" | 0.136"-0.192" | Not Rated | USS Standards; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1 3/8" | 1.500" | 3.250" | 0.153"-0.213" | Not Rated | USS Standards; ASME B18.21.1 | 5 | 000000000 | 0000 |
| 1 1/2" | 1.625" | 3.500" | 0.153"-0.213" | Not Rated | USS Standards; ASME B18.21.1 | 5 | 000000000 | 0000 |
| 1 5/8" | 1.750" | 3.750" | 0.153"-0.213" | Not Rated | USS Standards; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 3/4" | 1.875" | 4.000" | 0.153"-0.213" | Not Rated | USS Standards; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 7/8" | 2.000" | 4.250" | 0.153"-0.213" | Not Rated | USS Standards; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | USS Standards; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 2 1/4" | 2.375" | 4.750" | 0.193"-0.248" | Not Rated | USS Standards; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 2 1/2" | 2.625" | 5.000" | 0.210"-0.280" | Not Rated | USS Standards; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 2 3/4" | 2.875" | 5.250" | 0.228"-0.310" | Not Rated | USS Standards; ASME B18.21.1 | 1 | 000000000 | 00000 |
| 3" | 3.125" | 5.500" | 0.249"-0.327" | Not Rated | USS Standards; ASME B18.21.1 | 1 | 000000000 | 0000 |
SAE Washers
SAE washers generally have a smaller ID and OD than USS washers.
Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc-plated 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. | |
Hot-Dipped Galvanized Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.281" | 0.625" | 0.051"-0.080" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 100 | 000000000 | 00000 |
| 5/16" | 0.344" | 0.688" | 0.051"-0.080" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 100 | 000000000 | 0000 |
| 3/8" | 0.406" | 0.812" | 0.051"-0.080" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 100 | 000000000 | 0000 |
| 7/16" | 0.469" | 0.922" | 0.051"-0.080" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 50 | 000000000 | 0000 |
| 1/2" | 0.531" | 1.062" | 0.074"-0.121" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 50 | 000000000 | 00000 |
| 9/16" | 0.594" | 1.156" | 0.074"-0.121" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 25 | 000000000 | 0000 |
| 5/8" | 0.656" | 1.312" | 0.074"-0.121" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 25 | 000000000 | 00000 |
| 3/4" | 0.812" | 1.469" | 0.108"-0.160" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 25 | 000000000 | 00000 |
| 7/8" | 0.938" | 1.750" | 0.108"-0.160" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1" | 1.062" | 2.000" | 0.108"-0.160" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 5 | 000000000 | 0000 |
| 1 1/8" | 1.250" | 2.250" | 0.108"-0.160" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 1/4" | 1.375" | 2.500" | 0.136"-0.192" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 3/8" | 1.500" | 2.750" | 0.136"-0.192" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/2" | 1.625" | 3.000" | 0.136"-0.192" | Rockwell B72 | SAE Standards; ASME B18.21.1 | 1 | 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.
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 | |||||||
|---|---|---|---|---|---|---|---|
| 1/2" | 0.562" | 3.000" | 0.235"-0.265" | Rockwell B40 | 1 | 000000000 | 00000 |
| 5/8" | 0.688" | 3.000" | 0.235"-0.265" | Rockwell B40 | 1 | 000000000 | 0000 |
| 3/4" | 0.812" | 3.000" | 0.235"-0.265" | Rockwell B40 | 1 | 000000000 | 0000 |
| 7/8" | 0.938" | 3.000" | 0.235"-0.265" | Rockwell B40 | 1 | 000000000 | 0000 |
| 1" | 1.062" | 3.250" | 0.235"-0.265" | Rockwell B40 | 1 | 000000000 | 0000 |
| 1 1/4" | 1.375" | 4.000" | 0.485"-0.515" | Rockwell B40 | 1 | 000000000 | 0000 |
| 1 1/2" | 1.750" | 4.000" | 0.302"-0.332" | Rockwell B40 | 1 | 000000000 | 00000 |
| 1 3/4" | 2.000" | 4.000" | 0.302"-0.332" | Rockwell B40 | 1 | 000000000 | 00000 |
| 2" | 2.250" | 4.000" | 0.302"-0.332" | Rockwell B40 | 1 | 000000000 | 00000 |
| 2 1/2" | 2.750" | 4.500" | 0.302"-0.332" | Rockwell B40 | 1 | 000000000 | 00000 |
| 3" | 3.250" | 5.500" | 0.302"-0.332" | Rockwell B40 | 1 | 000000000 | 00000 |
Washers for Structural Applications
Designed for use with A325 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.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Hot-Dipped Galvanized Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/2" | 0.531" | 1.062" | 0.097"-0.177" | Rockwell C38 | ASTM F436, Type 1 | 50 | 000000000 | 000000 |
| 5/8" | 0.688" | 1.312" | 0.122"-0.177" | Rockwell C38 | ASTM F436, Type 1 | 25 | 000000000 | 0000 |
| 3/4" | 0.812" | 1.469" | 0.122"-0.177" | Rockwell C38 | ASTM F436, Type 1 | 25 | 000000000 | 00000 |
| 7/8" | 0.938" | 1.750" | 0.136"-0.177" | Rockwell C38 | ASTM F436, Type 1 | 10 | 000000000 | 0000 |
| 1" | 1.062" | 2.000" | 0.136"-0.177" | Rockwell C38 | ASTM F436, Type 1 | 10 | 000000000 | 0000 |
| 1 1/8" | 1.188" | 2.250" | 0.136"-0.177" | Rockwell C38 | ASTM F436, Type 1 | 10 | 000000000 | 00000 |
| 1 1/4" | 1.375" | 2.500" | 0.136"-0.177" | Rockwell C38 | ASTM F436, Type 1; ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1 3/8" | 1.531" | 2.750" | 0.136"-0.177" | Rockwell C38 | ASTM F436, Type 1 | 10 | 000000000 | 00000 |
| 1 1/2" | 1.625" | 3.000" | 0.136"-0.177" | Rockwell C38 | ASTM F436, Type 1; ASME B18.21.1 | 5 | 000000000 | 0000 |
| 1 5/8" | 1.770" | 3.250" | 0.178"-0.280" | Rockwell C38 | ASTM F436, Type 1 | 5 | 000000000 | 00000 |
| 1 3/4" | 1.875" | 3.375" | 0.178"-0.280" | Rockwell C38 | ASTM F436, Type 1 | 5 | 000000000 | 00000 |
| 1 7/8" | 2.000" | 3.500" | 0.178"-0.280" | Rockwell C38 | ASTM F436, Type 1 | 1 | 000000000 | 0000 |
| 2" | 2.125" | 3.750" | 0.178"-0.280" | Rockwell C38 | ASTM F436, Type 1 | 1 | 000000000 | 0000 |
| 2 1/4" | 2.407" | 4.000" | 0.240"-0.340" | Rockwell C38 | ASTM F436, Type 1 | 1 | 000000000 | 0000 |
| 2 1/2" | 2.657" | 4.500" | 0.240"-0.340" | Rockwell C38 | ASTM F436, Type 1 | 1 | 000000000 | 0000 |
| 2 3/4" | 2.907" | 5.000" | 0.240"-0.340" | Rockwell C38 | ASTM F436, Type 1 | 1 | 000000000 | 0000 |
| 3" | 3.157" | 5.500" | 0.240"-0.340" | Rockwell C38 | ASTM F436, Type 1 | 1 | 000000000 | 0000 |
Metric Washers for Structural Applications
These thick washers are designed to support structural screws, studs, and nuts. The steel base is hot-dipped galvanized to form a thick coating that holds up ten times better than zinc plating in wet environments. Since they are strong and rust resistant, these washers are often used for construction and on building exteriors. They meet ISO 7416 (formerly DIN 6916), which is an international standard for washer dimensions. Use them with DIN 6914 structural hex head bolts and DIN 6915 structural hex nuts.
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. | |
Hot-Dipped Galvanized Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| M12 | 13.0 | 24.0 | 2.7-3.3 | Rockwell C45 | DIN 6916; ISO 7416 | 25 | 000000000 | 000000 |
| M16 | 17.0 | 30.0 | 3.7-4.3 | Rockwell C45 | DIN 6916; ISO 7416 | 10 | 000000000 | 0000 |
| M20 | 21.0 | 37.0 | 3.7-4.3 | Rockwell C45 | DIN 6916; ISO 7416 | 10 | 000000000 | 00000 |
| M22 | 23.0 | 39.0 | 3.7-4.3 | Rockwell C45 | DIN 6916; ISO 7416 | 5 | 000000000 | 00000 |
| M24 | 25.0 | 44.0 | 3.7-4.3 | Rockwell C45 | DIN 6916; ISO 7416 | 5 | 000000000 | 00000 |
| M27 | 28.0 | 50.0 | 4.4-5.6 | Rockwell C45 | DIN 6916; ISO 7416 | 1 | 000000000 | 0000 |
| M30 | 31.0 | 56.0 | 4.4-5.6 | Rockwell C45 | DIN 6916; ISO 7416 | 1 | 000000000 | 0000 |
Square Washers
Square washers fit into slots and channels and have flat sides to keep them from rotating. They are wider and thicker than most round washers, making them good for distributing heavy loads.
Galvanized steel washers are 10 times as corrosion resistant as zinc-plated steel washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | Wd. | Thick. | Hardness | Each | |
| 1/4" | 0.312" | 2.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| 1" | 1.062" | 2.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 1 1/4" | 1.312" | 2.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 1 1/4" | 1.312" | 3.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 1 1/4" | 1.312" | 4.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| 1 1/2" | 1.562" | 3.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 1 1/2" | 1.562" | 4.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| 1 3/4" | 1.812" | 4.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| 1 3/4" | 1.938" | 3.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 0000 |
| 2" | 2.062" | 4.000" | 0.220"-0.280" | Rockwell B40 | 000000000 | 00000 |
| M6 | 9.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M8 | 11.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M10 | 13.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M12 | 16.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M14 | 18.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M16 | 22.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M20 | 26.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M22 | 28.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M24 | 32.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |
| M30 | 38.000mm | 50.000mm | 5.970mm-6.730mm | Rockwell B40 | 000000000 | 0000 |