S-98370A039 1.156" ID x 2.25" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional load distribution due to precise 1.156" ID and 2.25" OD dimensions, preventing surface damage and fastener loosening under heavy loads.
• Enhanced durability and wear resistance from Rockwell B83 hardness, ensuring long service life in high-stress assemblies.
• Reliable fit for 1 1/8" screws, providing secure fastening and reducing installation errors in inch-system applications.
• Compliance with strict environmental regulations, meeting RoHS 3 and REACH standards for safe use in regulated industries.
• Consistent thickness (0.199-0.224") ensures uniform pressure distribution and stable joint integrity across multiple installations.
• Versatile for heavy-duty applications, suitable for machinery, construction, and marine equipment where strength and corrosion resistance are critical.

Professional Applications & Engineering Value

This 18-8 stainless steel flat washer is engineered to address common industrial challenges such as corrosion-induced failure and joint instability. Its high-grade material provides excellent resistance to rust and chemicals, making it ideal for marine, chemical processing, and outdoor construction applications. The precise 1.156" ID and 2.25" OD dimensions ensure optimal load spreading, reducing stress on connected surfaces and preventing bolt loosening in vibrating environments. With a Rockwell B83 hardness, it maintains structural integrity under heavy loads, while its inch-system compatibility simplifies sourcing for North American engineering projects. This washer delivers reliable performance in industrial machinery, structural fastening, and heavy equipment, where durability and compliance with environmental safety standards are paramount.

Specification Summary & Compliance

This flat washer features precision dimensions: 1.156" ID, 2.25" OD, and thickness ranging from 0.199" to 0.224", designed for use with 1 1/8" screw sizes in inch-system applications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards. Manufactured from 18-8 stainless steel with a Rockwell B83 hardness, it meets industry requirements for corrosion resistance and mechanical strength in demanding industrial settings.