S-98026A119 0.938" ID x 2.25" OD ASME B18.21.1 General Purpose Washers
General Purpose 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 black protective coating, extending service life in harsh industrial environments
- Exceptional load distribution from the 2.25" outer diameter, preventing surface damage and joint loosening
- Grade 8 strength certification ensuring reliable performance under high-stress applications
- Precision 7/8" inner diameter for perfect fit with corresponding screw sizes, reducing installation time
- Rockwell C38 hardness rating providing excellent durability and resistance to deformation
- ASME B18.21.1 compliance guaranteeing consistent quality and dimensional accuracy
- Environmental regulation compliance with RoHS 3 and REACH standards for safe global usage
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Grade 8 USS flat washers deliver critical performance where vibration resistance and joint integrity are paramount. The black corrosion-resistant coated steel construction provides essential protection against rust and chemical exposure in manufacturing plants, construction sites, and heavy machinery. With their substantial 2.25" outer diameter, these washers effectively distribute clamping forces across wider surface areas, preventing material crushing and maintaining bolt preload in high-vibration environments. The Rockwell C38 hardness ensures the washers maintain their structural integrity under repeated loading cycles, making them ideal for critical connections in structural steelwork, industrial equipment assembly, and transportation infrastructure where failure is not an option.
Specification Summary & Compliance
This USS flat washer features precise dimensional specifications including 0.938" inner diameter, 2.25" outer diameter, and thickness ranging 0.136-0.160" for consistent performance. Manufactured to ASME B18.21.1 standards for dimensional accuracy and quality assurance. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.
