S-91090A108 0.281" ID x 1" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion protection through zinc plating extends service life in demanding industrial environments
• Precise dimensional fit with 0.281" inner diameter ensures optimal performance with 1/4" screws
• Enhanced load distribution across 1" outer diameter prevents surface damage and material deformation
• Consistent thickness control (0.042-0.051") maintains uniform pressure distribution in assembled components
• Regulatory compliance assurance with RoHS 3 and REACH standards for global market acceptance
• Durable steel construction provides reliable mechanical strength for industrial fastening applications
• Inch-system compatibility ensures seamless integration with existing North American equipment and specifications

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver critical engineering solutions where corrosion resistance and dimensional precision are paramount. The zinc plating surface treatment creates a protective barrier against moisture and chemical exposure, significantly reducing maintenance frequency in outdoor equipment, marine applications, and manufacturing facilities. With exact 0.281" ID specifications engineered for 1/4" screw applications, these washers prevent fastener loosening from vibration while distributing clamp load across the full 1" OD surface area. This combination of material protection and precise dimensional control makes them ideal for assembly lines, machinery maintenance, and construction projects where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to exact inch-system dimensional standards with 0.281" inner diameter, 1" outer diameter, and controlled 0.042-0.051" thickness for consistent performance. These flat washers comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they meet the latest environmental and safety standards for industrial components. The zinc-plated steel construction provides reliable mechanical properties for general-purpose fastening applications requiring corrosion resistance and dimensional stability.