S-98026A035 0.688" ID x 1.75" 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 corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments
- Superior mechanical strength with Grade 8 classification and Rockwell C38 hardness for heavy-duty applications
- Precise dimensional fit with 0.688" ID and 1.75" OD ensuring proper load distribution under bolt heads
- Industry-standard compliance with ASME B18.21.1 specifications for reliable performance and interchangeability
- Environmental regulation adherence through REACH compliance, ensuring safe usage in regulated markets
- Optimized thickness range (0.108-0.160") providing consistent compression and vibration resistance
- Durable steel construction with protective plating that maintains integrity under high-stress conditions
Professional Applications & Engineering Value
Engineered for heavy-duty industrial fastening systems, these USS flat washers deliver critical performance where vibration resistance and load distribution are paramount. The zinc yellow-chromate plated steel construction provides superior corrosion protection in demanding environments including outdoor machinery, construction equipment, and manufacturing assemblies. With Grade 8 strength classification and Rockwell C38 hardness, these washers maintain dimensional stability under extreme pressure, preventing bolt loosening and joint failure. The precise 5/8" screw size compatibility and standardized dimensions ensure seamless integration into existing inch system fastening configurations, making them ideal for maintenance, repair, and OEM applications requiring reliable, long-lasting performance.
Specification Summary & Compliance
Manufactured to ASME B18.21.1 dimensional standards with precise inner diameter (0.688"), outer diameter (1.75"), and thickness (0.108-0.160") tolerances. The Grade 8 classification ensures high tensile strength performance, while the Rockwell C38 hardness rating guarantees durability. Compliant with REACH regulations (EC 1907/2006) regarding substance restrictions, making these washers suitable for international industrial markets requiring environmental compliance.
