S-90481A255 0.812" ID x 3.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
• Optimal load distribution with 3.5" outer diameter design, preventing surface damage and fastener loosening
• Precise compatibility with 0.812" inner diameter engineered specifically for 3/4" screws
• Enhanced durability through consistent 0.108-0.160" thickness range, maintaining structural integrity under pressure
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe industrial applications
• Versatile inch system compatibility designed for seamless integration with standard industrial equipment
• Reliable performance in heavy-duty applications where consistent load bearing capacity is critical

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver exceptional engineering value by solving critical industrial challenges in load management and environmental durability. The 3.5" outer diameter provides maximum surface coverage, effectively distributing clamping force across wider areas to prevent material deformation and joint failure in structural applications. The zinc plating creates a protective barrier against moisture, chemicals, and atmospheric corrosion, making these flat washers ideal for outdoor equipment, machinery assemblies, and manufacturing facilities where environmental factors compromise fastener integrity. Engineered specifically for 3/4" screws, these washers ensure precise fitment in heavy-duty bolting applications across construction, industrial machinery, and transportation equipment, reducing maintenance frequency and extending service intervals through reliable corrosion resistance and consistent performance under sustained mechanical stress.

Specification Summary & Compliance

This flat washer features precise inch system dimensions with 3.5" outer diameter, 0.812" inner diameter, and thickness ranging 0.108-0.160" for consistent performance. Manufactured from zinc-plated steel for enhanced corrosion protection, these washers are specifically designed for use with 3/4" screws in industrial applications. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and meeting international standards for hazardous substance restrictions in industrial components.