Zinc-Plated Steel USS Washer
for 1/2" Size SAE Grade 5 Screw, 0.563" ID, 1.375" OD
Washer Designation | USS |
Material | Zinc-Plated Steel |
For Screw Size | 1/2" |
ID | 0.563" |
OD | 1.375" |
Thickness | 0.086" to 0.132" |
For Fastener Strength Grade/Class | SAE Grade 5 |
Specifications Met | ASME B18.21.1 |
Fastener Strength Grade/Class | SAE Grade 5 |
Fastener Strength Rating | Medium |
Hardness | Not Rated |
System of Measurement | Inch |
Washer Type | Flat |
Country of Origin | United States |
DFARS Compliance | Specialty Metals COTS-Exempt |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | Not Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731822.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
These washers meet USS sizing specifications and typically have larger diameters than SAE washers. As a result, they accommodate larger screws and nuts and distribute pressure across a wider surface area. They are also thicker, so they withstand heavier loads and span wider gaps when used as spacers.
Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Medium Strength Fastener—Rated Grade 5 or Class 8.8, these washers can be paired with medium-strength steel nuts and bolts without deforming. They are strong enough for most industrial applications, such as anchoring machinery and connecting pipe flanges.
For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.
Resist loosening
The information in this 3-D model is provided for reference only.