S-90108A042 1.5" ID x 3.25" 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 corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
- Optimal load distribution with 3.25" outer diameter, preventing surface damage and maintaining joint integrity
- Precise compatibility with 1 3/8" screw sizes, ensuring secure fit and reliable fastening performance
- Enhanced durability through ASME B18.21.1 compliance, guaranteeing consistent quality and dimensional accuracy
- Environmental compliance with RoHS 3 and REACH regulations, ensuring safe usage in regulated industries
- Versatile thickness range (0.153-0.213") accommodating various compression needs and installation requirements
- Heavy-duty construction ideal for high-stress applications, providing long-term mechanical stability
Professional Applications & Engineering Value
These USS flat washers deliver exceptional engineering value through their zinc-plated steel composition and standardized dimensions. The corrosion-resistant surface treatment protects against oxidation in demanding environments like construction, machinery assembly, and outdoor infrastructure. With precise 1.5" ID and 3.25" OD specifications, they effectively distribute clamping forces across wider surfaces, preventing bolt head embedment and material deformation. The ASME B18.21.1 compliance ensures dimensional consistency for reliable performance in heavy-duty bolted connections, structural steelwork, and industrial equipment maintenance. Their robust design addresses common failure points in high-vibration applications by maintaining consistent bearing pressure and extending fastener system longevity.
Specification Summary & Compliance
Manufactured to ASME B18.21.1 standards with inch system measurements: 1.5" inner diameter, 3.25" outer diameter, and thickness range of 0.153-0.213". Designed specifically for 1 3/8" screw sizes with standard USS flat washer configuration. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components.
