S-90495A113 0.285" ID x 2" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with 2" outer diameter to prevent surface damage and material embedment under high stress
• Superior corrosion resistance through zinc yellow-chromate plating that withstands harsh industrial environments
• Guaranteed mechanical strength with Rockwell C38 hardness and Grade 8 classification for heavy-duty applications
• Precise fastener compatibility with 0.285" inner diameter designed specifically for 1/4" screw sizes
• Consistent performance reliability maintained through controlled thickness variation (0.047-0.080")
• Global compliance assurance meeting RoHS 3 and REACH environmental standards for international supply chains
• Enhanced durability from plated steel construction that maintains integrity through repeated torque applications

Professional Applications & Engineering Value

These Grade 8 flat washers deliver critical engineering solutions where standard washers fail. The zinc yellow-chromate plated steel construction provides dual protection against corrosion and abrasion, extending service life in demanding applications like heavy machinery assembly, structural steel connections, and industrial equipment maintenance. The precise 1/4" ID x 2" OD dimensional specifications ensure optimal load distribution across wider surface areas, preventing joint loosening and material deformation under extreme vibration conditions. With Rockwell C38 hardness and inch system compatibility, these washers maintain clamping force integrity in high-torque scenarios common in construction, automotive, and manufacturing sectors where fastener failure is not an option.

Specification Summary & Compliance

Manufactured to exact inch system specifications with 0.285" inner diameter, 2" outer diameter, and thickness range of 0.047-0.080". Meets Grade 8 strength classification requirements with verified Rockwell C38 hardness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted use in global industrial markets. The zinc yellow-chromate plating provides consistent surface protection while maintaining dimensional stability across production batches.