S-98099A046 0.812" ID x 1.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance through black-oxide steel coating, extending service life in demanding environments
• Optimal load distribution with 1.5" outer diameter, preventing surface damage and joint loosening
• Precise fit for 3/4" screws with 0.812" inner diameter, ensuring secure fastening alignment
• Durable steel construction providing reliable performance under heavy-duty mechanical stress
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for industrial safety
• Versatile inch system compatibility suitable for both maintenance and manufacturing applications
• Consistent thickness control (0.198-0.223") for uniform pressure distribution across mating surfaces

Professional Applications & Engineering Value

This black-oxide steel flat washer delivers critical engineering solutions where corrosion resistance and load distribution are paramount. The black-oxide surface treatment creates a protective barrier against oxidation and chemical exposure, making it ideal for outdoor equipment, automotive assemblies, and industrial machinery exposed to humidity or corrosive agents. With its 1.5" outer diameter, it effectively disperses clamping force over a wider area, preventing surface indentation and maintaining bolt preload in heavy-duty applications. The precise 0.812" inner diameter ensures perfect alignment with 3/4" screws, reducing installation time and eliminating fastener misalignment issues in production lines and maintenance operations.

Specification Summary & Compliance

Manufactured to standard inch system dimensions with 0.812" ID and 1.5" OD, this flat washer maintains consistent thickness between 0.198-0.223" for reliable performance. The product fully complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as steel alloying element and meets REACH (EC 1907/2006) requirements regarding SVHC substances as of January 2023. While hardness is not rated, the steel construction ensures mechanical integrity for general industrial fastening applications requiring corrosion protection and load distribution capabilities.