About Washers
More
USS Washers
USS washers generally have a larger ID and OD than SAE washers.
316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic. Black-oxide washers have a matte-black finish.
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. | |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.312" | 0.750" | 0.051"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 000000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.104" | Rockwell B68 | ASME B18.21.1 | 25 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.000" | 0.064"-0.104" | Rockwell B68 | ASME B18.21.1 | 10 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.250" | 0.064"-0.104" | Rockwell B68 | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1/2" | 0.562" | 1.375" | 0.086"-0.132" | Rockwell B68 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 9/16" | 0.625" | 1.500" | 0.086"-0.132" | Rockwell B68 | __ | 5 | 000000000 | 00000 |
| 5/8" | 0.688" | 1.750" | 0.108"-0.160" | Rockwell B68 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 3/4" | 0.812" | 2.000" | 0.122"-0.177" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 7/8" | 0.938" | 2.250" | 0.136"-0.192" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1" | 1.062" | 2.500" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/8" | 1.250" | 2.750" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/4" | 1.375" | 3.000" | 0.136"-0.192" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 3/8" | 1.500" | 3.250" | 0.153"-0.213" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 1/2" | 1.625" | 3.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 5/8" | 1.750" | 3.750" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 3/4" | 1.875" | 4.000" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 7/8" | 2.000" | 4.250" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||
| No. 10 | 0.250" | 0.562" | 0.036"-0.065" | Rockwell B68 | __ | 50 | 000000000 | 0000 |
| 1/4" | 0.312" | 0.750" | 0.051"-0.080" | Rockwell B68 | __ | 50 | 000000000 | 00000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.104" | Rockwell B68 | ASME B18.21.1 | 25 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.000" | 0.064"-0.104" | Rockwell B68 | ASME B18.21.1 | 10 | 000000000 | 0000 |
| 7/16" | 0.500" | 1.250" | 0.064"-0.104" | Rockwell B68 | ASME B18.21.1 | 10 | 000000000 | 0000 |
| 1/2" | 0.562" | 1.375" | 0.086"-0.132" | Rockwell B68 | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 9/16" | 0.625" | 1.500" | 0.086"-0.132" | Rockwell B68 | __ | 5 | 000000000 | 0000 |
| 5/8" | 0.688" | 1.750" | 0.108"-0.160" | Rockwell B68 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 3/4" | 0.812" | 2.000" | 0.122"-0.177" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 7/8" | 0.938" | 2.250" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1" | 1.062" | 2.500" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/8" | 1.250" | 2.750" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/4" | 1.375" | 3.000" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 3/8" | 1.500" | 3.250" | 0.153"-0.213" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/2" | 1.625" | 3.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 5/8" | 1.750" | 3.750" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 3/4" | 1.875" | 4.000" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 7/8" | 2.000" | 4.250" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 2 1/4" | 2.375" | 4.750" | 0.193"-0.250" | Not Rated | __ | 1 | 000000000 | 00000 |
| 2 1/2" | 2.625" | 5.000" | 0.210"-0.280" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 2 3/4" | 2.875" | 5.250" | 0.228"-0.310" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 3" | 3.125" | 5.500" | 0.249"-0.327" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
Black-Oxide 18-8 Stainless Steel | ||||||||
| 1/4" | 0.312" | 0.750" | 0.051"-0.080" | Rockwell B68 | __ | 25 | 000000000 | 0000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.104" | Rockwell B68 | ASME B18.21.1 | 25 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.000" | 0.064"-0.104" | Rockwell B68 | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.250" | 0.064"-0.104" | Rockwell B68 | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1/2" | 0.562" | 1.375" | 0.086"-0.132" | Rockwell B68 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 9/16" | 0.625" | 1.500" | 0.086"-0.132" | Rockwell B68 | __ | 5 | 000000000 | 00000 |
| 5/8" | 0.688" | 1.750" | 0.108"-0.160" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 3/4" | 0.812" | 2.000" | 0.122"-0.177" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 7/8" | 0.938" | 2.250" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1" | 1.062" | 2.500" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/8" | 1.250" | 2.750" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 1 1/4" | 1.375" | 3.000" | 0.136"-0.192" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 3/8" | 1.500" | 3.250" | 0.153"-0.213" | Rockwell B68 | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 1/2" | 1.625" | 3.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 5/8" | 1.750" | 3.750" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 3/4" | 1.875" | 4.000" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 1 7/8" | 2.000" | 4.250" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |
Black-Oxide Steel | ||||||||
| No. 10 | 0.250" | 0.562" | 0.036"-0.065" | Not Rated | __ | 100 | 000000000 | 00000 |
Zinc-Plated Steel | ||||||||
| No. 10 | 0.250" | 0.562" | 0.036"-0.065" | Not Rated | __ | 100 | 000000000 | 0000 |
| No. 10 | 0.250" | 0.562" | 0.036"-0.065" | Not Rated | __ | 1,785 | 000000000 | 00000 |
| 1/4" | 0.312" | 0.750" | 0.051"-0.080" | Not Rated | __ | 100 | 000000000 | 0000 |
| 1/4" | 0.312" | 0.750" | 0.051"-0.080" | Not Rated | __ | 745 | 000000000 | 00000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.104" | Not Rated | ASME B18.21.1 | 100 | 000000000 | 0000 |
| 5/16" | 0.375" | 0.875" | 0.064"-0.104" | Not Rated | ASME B18.21.1 | 435 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.000" | 0.064"-0.104" | Not Rated | ASME B18.21.1 | 100 | 000000000 | 00000 |
| 3/8" | 0.438" | 1.000" | 0.064"-0.104" | Not Rated | ASME B18.21.1 | 335 | 000000000 | 00000 |
| 7/16" | 0.500" | 1.250" | 0.064"-0.104" | Not Rated | ASME B18.21.1 | 100 | 000000000 | 00000 |
| 1/2" | 0.562" | 1.375" | 0.086"-0.132" | Not Rated | ASME B18.21.1 | 50 | 000000000 | 00000 |
| 9/16" | 0.625" | 1.469" | 0.086"-0.132" | Not Rated | ASME B18.21.1 | 50 | 000000000 | 00000 |
| 5/8" | 0.688" | 1.750" | 0.108"-0.160" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 00000 |
| 3/4" | 0.812" | 2.000" | 0.122"-0.177" | Not Rated | ASME B18.21.1 | 25 | 000000000 | 00000 |
| 7/8" | 0.938" | 2.250" | 0.136"-0.192" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1" | 1.062" | 2.500" | 0.136"-0.192" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1 1/8" | 1.250" | 2.750" | 0.136"-0.192" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1 1/4" | 1.375" | 3.000" | 0.136"-0.192" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1 3/8" | 1.500" | 3.250" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 1/2" | 1.625" | 3.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 5/8" | 1.750" | 3.750" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 3/4" | 1.875" | 4.000" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1 7/8" | 2.000" | 4.250" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 2" | 2.125" | 4.500" | 0.153"-0.213" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 00000 |