Steel Washer
USS, Zinc-Yellow-Chromate-Plated, for 1/4" Screw, 0.734" OD
Washer Designation | USS |
Material | Zinc-Yellow-Chromate-Plated Steel |
For Screw Size | 1/4" |
ID | 0.312" |
OD | 0.734" |
Thickness | 0.051" to 0.080" |
For Fastener Strength Grade/Class | SAE Grade 8 |
Specifications Met | ASME B18.21.1 |
Fastener Strength Grade/Class | SAE Grade 8 |
Fastener Strength Rating | High |
Hardness | Rockwell C38 |
Performance | High Strength |
System of Measurement | Inch |
Washer Type | Flat |
Country of Origin | United States |
DFARS Compliance | Specialty Metals Compliant (252.225-7008), Specialty Metals Compliant (252.225-7009) |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (01/21/2025, 247 SVHC) Compliant |
RoHS Compliance | Not 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-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
High Strength Fastener—About 25% stronger than medium-strength steel washers, these are commonly used when fastening components in valves, pumps, and motors. Pair them with other high-strength steel nuts and bolts.
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.
The information in this 3-D model is provided for reference only.