S-90481A226 0.688" ID x 2" OD Oversized Washers

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide steel coating for longer service life in demanding environments
• Optimal load distribution thanks to precise 2" outer diameter that prevents surface damage and material embedment
• Perfect fit for 5/8" fasteners with 0.688" inner diameter ensuring secure installation and vibration resistance
• Consistent performance maintained through controlled 0.110-0.140" thickness for uniform pressure application
• Environmental compliance assurance with RoHS 3 and REACH standards for safe industrial usage
• Durable steel construction providing reliable strength for heavy-duty mechanical applications
• Broad compatibility with inch-system components for seamless integration into existing assemblies

Professional Applications & Engineering Value

These black-oxide steel flat washers deliver critical engineering solutions where corrosion protection and reliable load distribution are paramount. The black-oxide surface treatment creates a protective barrier against moisture and chemical exposure, significantly extending component life in industrial equipment, machinery assemblies, and outdoor applications. With precise 0.688" ID matching standard 5/8" screw sizes, these washers prevent loosening under vibration while the generous 2" OD effectively distributes clamping force across wider surface areas. This combination addresses common failure points in heavy-duty applications by reducing stress concentration, preventing surface damage to connected materials, and maintaining joint integrity through repeated load cycles and environmental exposure.

Specification Summary & Compliance

Manufactured to standard inch dimensions with 0.688" inner diameter and 2" outer diameter, these flat washers feature a thickness range of 0.110-0.140" for consistent performance. The black-oxide steel construction provides durable corrosion protection while maintaining full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe usage across various industrial sectors and applications requiring regulated materials.