S-90108A047 2.375" ID x 4.75" OD ASME B18.21.1 USS Washers
USS 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
- Superior load distribution with large 4.75" outer diameter to prevent surface damage and fastener embedment
- Enhanced corrosion resistance through zinc-plated steel construction for extended service life in demanding environments
- Precise dimensional compatibility with 2.375" inner diameter specifically designed for 2 1/4" screw applications
- Robust structural integrity with 0.193-0.248" thickness range to withstand heavy clamping forces
- Industry-standard compliance with ASME B18.21.1 specifications ensuring reliable performance and interchangeability
- Environmental regulation compliance meeting RoHS 3 and REACH requirements for safe industrial use
- Versatile industrial application suitable for construction, machinery, and heavy equipment assemblies
Professional Applications & Engineering Value
These USS flat washers deliver critical engineering solutions for heavy-duty applications where proper load distribution is paramount. The zinc-plated steel construction provides essential corrosion protection in industrial environments, while the substantial 4.75" outer diameter creates an optimal bearing surface to prevent joint loosening and material deformation. Engineered specifically for 2 1/4" screw sizes, these washers effectively distribute clamping forces across a wider area, protecting sensitive surfaces and maintaining bolt tension in structural connections, machinery assemblies, and construction applications where vibration and dynamic loads are common challenges.
Specification Summary & Compliance
Manufactured to ASME B18.21.1 standards with precise dimensional specifications including 2.375" inner diameter, 4.75" outer diameter, and thickness range of 0.193-0.248". These USS flat washers maintain dimensional accuracy per inch measurement system requirements. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures responsible manufacturing and safe industrial application across global markets.
