S-90495A192 0.535" ID x 2" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments
• Superior load distribution with a large 2" outer diameter, preventing surface damage and joint loosening under high stress
• High-strength Grade 8 performance ensuring reliable performance in heavy-duty mechanical and structural applications
• Precise 1/2" internal diameter fit for secure placement on standard 1/2" fasteners, reducing installation errors
• Enhanced durability with Rockwell C38 hardness, providing excellent resistance to deformation under pressure
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe, environmentally conscious industrial use
• Consistent dimensional accuracy in inch system measurements, ensuring compatibility and interchangeability in existing assemblies

Professional Applications & Engineering Value

This Grade 8 flat washer is engineered to address critical challenges in heavy machinery, construction, and automotive assemblies where vibration, high loads, and environmental exposure are common. The zinc yellow-chromate plated steel construction provides a robust barrier against rust and chemical degradation, significantly reducing maintenance frequency and failure risks. Its 2" OD offers an optimal bearing surface to distribute clamping force evenly, preventing bolt head embedment and material crushing in soft substrates. With Rockwell C38 hardness, it maintains structural integrity under repetitive dynamic loads, making it ideal for industrial washers applications in structural steel connections, engine mounts, and heavy equipment frames. The precise 1/2" ID ensures quick, secure fitting, streamlining assembly processes while meeting stringent fastener reliability requirements.

Specification Summary & Compliance

This flat washer features an internal diameter of 0.535" (for 1/2" screw size), outer diameter of 2", and thickness range of 0.047-0.080", manufactured to inch system standards for broad compatibility. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety protocols. The Grade 8 classification and Rockwell C38 hardness confirm high tensile strength and durability, suitable for demanding industrial applications requiring reliable fastener strength and long-term performance.