S-98026A042 1.625" ID x 3.5" 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
- Superior corrosion resistance with zinc yellow-chromate plating, extending service life in harsh environments
- Exceptional load distribution due to 3.5" OD and 1.625" ID, minimizing surface damage and loosening
- High-strength performance with Grade 8 classification and Rockwell C38 hardness for demanding applications
- Precision dimensional accuracy compliant with ASME B18.21.1, ensuring reliable fit for 1 1/2" screws
- Enhanced durability from 0.136-0.160" thickness, providing stable support under heavy loads
- Regulatory compliance with REACH standards, ensuring safe and environmentally responsible usage
- Versatile inch-system compatibility for seamless integration into industrial and construction assemblies
Professional Applications & Engineering Value
Engineered for heavy-duty industrial and construction applications, these Grade 8 USS flat washers address critical challenges like vibration-induced loosening and surface damage. The zinc yellow-chromate plated steel construction offers robust corrosion resistance, essential for outdoor or high-moisture environments. With a Rockwell C38 hardness and precise dimensions (1.625" ID x 3.5" OD), they ensure uniform load distribution, preventing bolt failure and maintaining structural integrity in machinery, bridges, and heavy equipment. Compliance with ASME B18.21.1 guarantees consistent performance, making them ideal for high-stress fastener systems where reliability is non-negotiable.
Specification Summary & Compliance
This washer meets ASME B18.21.1 specifications for dimensional accuracy, with an inner diameter of 1.625", outer diameter of 3.5", and thickness ranging from 0.136" to 0.160". It is designed for use with 1 1/2" screw sizes in inch-system applications. The product is REACH (EC 1907/2006) compliant as of June 14, 2023, covering 235 SVHC, and manufactured from zinc yellow-chromate plated steel with a Grade 8 strength classification and Rockwell C38 hardness for assured performance in regulated industrial settings.
