S-90495A191 0.531" ID x 1.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional Load Distribution with 1.5" OD and 0.531" ID for superior surface coverage and reduced pressure points under Grade 8 fasteners
• Enhanced Corrosion Resistance through zinc yellow-chromate plating that protects against rust in harsh industrial environments
• Maximum Durability with Rockwell C38 hardness ensuring long-term performance under heavy loads and vibration
• Premium Strength Rating meeting Grade 8 standards for high-tensile applications requiring reliable fastener performance
• Precision Engineering with thickness range of 0.056-0.071" for consistent spacing and secure fastening
• Environmental Compliance with RoHS 3 and REACH regulations for safe use across global industrial markets
• Heavy-Duty Construction designed specifically for 1/2" screw applications requiring maximum mechanical integrity

Professional Applications & Engineering Value

This Grade 8 flat washer delivers critical engineering solutions for industrial applications where failure is not an option. The zinc yellow-chromate plated steel construction provides superior corrosion protection in demanding environments including outdoor equipment, machinery assemblies, and structural frameworks. With its heavy-duty design and precise dimensions (0.531" ID, 1.5" OD), this washer effectively distributes clamping force across wider surfaces, preventing joint loosening and material deformation under extreme vibration and load conditions. The combination of Rockwell C38 hardness and Grade 8 classification ensures reliable performance in high-stress applications where standard washers would fail, making it ideal for critical connections in construction, manufacturing, and heavy equipment industries.

Specification Summary & Compliance

Manufactured to exacting inch system standards with precise internal diameter (0.531") and outer diameter (1.5") dimensions. This flat washer maintains consistent thickness tolerances (0.056-0.071") for uniform performance. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe handling and environmental responsibility. Meets Grade 8 fastener strength requirements with verified Rockwell C38 hardness for guaranteed mechanical properties in demanding industrial applications.