S-93413A311 0.313" ID x 0.75" OD ASME B18.21.1 Oversized Washers
Oversized Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional load distribution with 0.75" OD and 0.313" ID for superior surface coverage and reduced material stress
- Maximum corrosion resistance thanks to black corrosion-resistant coated steel, ideal for harsh industrial environments
- Superior mechanical strength with Grade 8 classification and Rockwell C38 hardness for heavy-duty applications
- Precise dimensional accuracy meeting ASME B18.21.1 specifications for reliable fit and consistent performance
- Enhanced durability and longevity with thickness ranging from 0.090" to 0.110" for optimal compression resistance
- Compliance with global standards including RoHS 3 and REACH for safe, environmentally responsible usage
- Perfect compatibility with 1/4" screw sizes for seamless integration into existing fastener systems
Professional Applications & Engineering Value
This Grade 8 USS flat washer delivers critical engineering solutions where corrosion resistance and structural integrity are paramount. The black corrosion-resistant coated steel construction prevents rust and degradation in demanding environments like marine applications, chemical processing plants, and outdoor infrastructure. With its USS designation and ASME B18.21.1 compliance, this washer provides reliable load distribution and vibration resistance in heavy machinery, construction equipment, and automotive assemblies. The Rockwell C38 hardness ensures minimal deformation under extreme pressure, making it ideal for high-torque applications where fastener security is critical to operational safety and equipment longevity.
Specification Summary & Compliance
This precision USS flat washer features dimensional specifications of 0.313" ID, 0.75" OD, and thickness ranging 0.090-0.110" for 1/4" screw size compatibility. Manufactured to ASME B18.21.1 standards with Grade 8 strength classification and Rockwell C38 hardness for consistent performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across global industrial markets.
