S-90495A112 0.285" ID x 1.5" OD Oversized Washers

Key Features & Benefits at a Glance

• Maximum load distribution with 1.5" outer diameter to prevent surface damage and fastener loosening under vibration
• Superior corrosion resistance through zinc yellow-chromate plating for extended service life in harsh environments
• Exceptional hardness rating of Rockwell C38 maintains dimensional stability under extreme pressure
• Precision fit for 1/4" fasteners with 0.285" inner diameter ensuring secure assembly alignment
• Grade 8 strength certification guarantees reliable performance in high-stress industrial applications
• Regulatory compliance assurance with RoHS 3 and REACH standards for global manufacturing requirements
• Versatile thickness range from 0.047" to 0.080" accommodates various compression and spacing needs

Professional Applications & Engineering Value

These Grade 8 flat washers deliver critical engineering solutions where high-strength fastening systems encounter demanding operational conditions. The zinc yellow-chromate plated steel construction provides dual protection against corrosion and abrasion, significantly extending maintenance intervals in outdoor, chemical, and marine environments. With their 1.5" OD and Rockwell C38 hardness, these industrial washers effectively distribute clamping forces across wider surfaces, preventing joint failure in heavy machinery, structural steel connections, and automotive assemblies. The precise 0.285" ID ensures perfect alignment with 1/4" fasteners, reducing installation time while maintaining the integrity of Grade 8 fastener systems.

Specification Summary & Compliance

Manufactured to inch system specifications with dimensional accuracy: 0.285" inner diameter, 1.5" outer diameter, and thickness range of 0.047-0.080". These flat washers meet Grade 8 strength classification requirements with verified Rockwell C38 hardness. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, including the latest SVHC updates, ensures environmental responsibility and global market acceptance for industrial and construction applications.